<?xml version="1.0" encoding="UTF-8"?>

<CompactData xmlns="http://www.SDMX.org/resources/SDMXML/schemas/v2_0/message" xmlns:bbk="http://www.bundesbank.de/statistik/zeitreihen/BBKcompact" xmlns:compact="http://www.SDMX.org/resources/SDMXML/schemas/v2_0/compact" xmlns:xsl="http://www.w3.org/2001/XMLSchema-instance" xsl:schemaLocation="http://www.SDMX.org/resources/SDMXML/schemas/v2_0/message schemas/SDMXMessage.xsd http://www.bundesbank.de/statistik/zeitreihen/bbkcompact schemas/BBKCompactData.xsd http://www.SDMX.org/resources/SDMXML/schemas/v2_0/compact schemas/SDMXCompactData.xsd">
  <Header>
    <ID>BBSIS_D_I_ZST_T2_EUR_S1311_B_A604__Z_R_A_A__Z__Z_A</ID>
    <Test>false</Test>
    <Truncated>false</Truncated>
    <Prepared>2026-04-07T21:38:59</Prepared>
    <Sender id="BBK">
      <Name xml:lang="de">Deutsche Bundesbank</Name>
      <Contact>
        <Email>presse-information@bundesbank.de</Email>
      </Contact>
    </Sender>
  </Header>
  <bbk:DataSet datasetID="BBK_SEIS">
    <bbk:Series FREQ="D" BBK_ID="BBSIS.D.I.ZST.T2.EUR.S1311.B.A604._Z.R.A.A._Z._Z.A" DECIMALS="5" UNIT="" UNIT_MULT="0" BBK_TITLE="Zinsstrukturkurve / Parameter Tau2 (Svensson-Methode) /           Börsennotierte Bundeswertpapiere / Tageswerte" BBK_TITLE_ENG="Term structure of interest rates on listed Federalsecurities (method by Svensson) / Parameter Tau2 /daily data" BBK_COMM_GEN="Monatsreihe siehe WZ9806. Bis Juli 1997 liegen lediglich Ultimowerte vor.">
      <bbk:Obs TIME_PERIOD="2026-04-07" OBS_VALUE="1.96631" BBK_DIFF_A="0.44071"/>
      <bbk:Obs TIME_PERIOD="2026-04-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-04-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-04-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-04-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-04-02" OBS_VALUE="1.5256" BBK_DIFF_A="-0.03297"/>
      <bbk:Obs TIME_PERIOD="2026-04-01" OBS_VALUE="1.55857" BBK_DIFF_A="-0.16867"/>
      <bbk:Obs TIME_PERIOD="2026-03-31" OBS_VALUE="1.72724" BBK_DIFF_A="0.23206"/>
      <bbk:Obs TIME_PERIOD="2026-03-30" OBS_VALUE="1.49518" BBK_DIFF_A="3.2E-4"/>
      <bbk:Obs TIME_PERIOD="2026-03-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-03-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-03-27" OBS_VALUE="1.49486" BBK_DIFF_A="-0.10517"/>
      <bbk:Obs TIME_PERIOD="2026-03-26" OBS_VALUE="1.60003" BBK_DIFF_A="-0.16429"/>
      <bbk:Obs TIME_PERIOD="2026-03-25" OBS_VALUE="1.76432" BBK_DIFF_A="-0.43737"/>
      <bbk:Obs TIME_PERIOD="2026-03-24" OBS_VALUE="2.20169" BBK_DIFF_A="-0.1072"/>
      <bbk:Obs TIME_PERIOD="2026-03-23" OBS_VALUE="2.30889" BBK_DIFF_A="-0.00623"/>
      <bbk:Obs TIME_PERIOD="2026-03-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-03-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-03-20" OBS_VALUE="2.31512" BBK_DIFF_A="0.6598"/>
      <bbk:Obs TIME_PERIOD="2026-03-19" OBS_VALUE="1.65532" BBK_DIFF_A="-10.41444"/>
      <bbk:Obs TIME_PERIOD="2026-03-18" OBS_VALUE="12.06976" BBK_DIFF_A="-0.455"/>
      <bbk:Obs TIME_PERIOD="2026-03-17" OBS_VALUE="12.52476" BBK_DIFF_A="-0.01785"/>
      <bbk:Obs TIME_PERIOD="2026-03-16" OBS_VALUE="12.54261" BBK_DIFF_A="0.17138"/>
      <bbk:Obs TIME_PERIOD="2026-03-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-03-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-03-13" OBS_VALUE="12.37123" BBK_DIFF_A="0.00516"/>
      <bbk:Obs TIME_PERIOD="2026-03-12" OBS_VALUE="12.36607" BBK_DIFF_A="0.50767"/>
      <bbk:Obs TIME_PERIOD="2026-03-11" OBS_VALUE="11.8584" BBK_DIFF_A="0.93183"/>
      <bbk:Obs TIME_PERIOD="2026-03-10" OBS_VALUE="10.92657" BBK_DIFF_A="-1.68778"/>
      <bbk:Obs TIME_PERIOD="2026-03-09" OBS_VALUE="12.61435" BBK_DIFF_A="2.57877"/>
      <bbk:Obs TIME_PERIOD="2026-03-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-03-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-03-06" OBS_VALUE="10.03558" BBK_DIFF_A="1.44774"/>
      <bbk:Obs TIME_PERIOD="2026-03-05" OBS_VALUE="8.58784" BBK_DIFF_A="-0.24049"/>
      <bbk:Obs TIME_PERIOD="2026-03-04" OBS_VALUE="8.82833" BBK_DIFF_A="0.08171"/>
      <bbk:Obs TIME_PERIOD="2026-03-03" OBS_VALUE="8.74662" BBK_DIFF_A="2.85144"/>
      <bbk:Obs TIME_PERIOD="2026-03-02" OBS_VALUE="5.89518" BBK_DIFF_A="0.11902"/>
      <bbk:Obs TIME_PERIOD="2026-03-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-02-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-02-27" OBS_VALUE="5.77616" BBK_DIFF_A="-0.04575"/>
      <bbk:Obs TIME_PERIOD="2026-02-26" OBS_VALUE="5.82191" BBK_DIFF_A="-0.10415"/>
      <bbk:Obs TIME_PERIOD="2026-02-25" OBS_VALUE="5.92606" BBK_DIFF_A="0.10177"/>
      <bbk:Obs TIME_PERIOD="2026-02-24" OBS_VALUE="5.82429" BBK_DIFF_A="-0.06191"/>
      <bbk:Obs TIME_PERIOD="2026-02-23" OBS_VALUE="5.8862" BBK_DIFF_A="-0.01613"/>
      <bbk:Obs TIME_PERIOD="2026-02-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-02-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-02-20" OBS_VALUE="5.90233" BBK_DIFF_A="0.04733"/>
      <bbk:Obs TIME_PERIOD="2026-02-19" OBS_VALUE="5.855" BBK_DIFF_A="0.23904"/>
      <bbk:Obs TIME_PERIOD="2026-02-18" OBS_VALUE="5.61596" BBK_DIFF_A="0.06012"/>
      <bbk:Obs TIME_PERIOD="2026-02-17" OBS_VALUE="5.55584" BBK_DIFF_A="-0.23604"/>
      <bbk:Obs TIME_PERIOD="2026-02-16" OBS_VALUE="5.79188" BBK_DIFF_A="0.01813"/>
      <bbk:Obs TIME_PERIOD="2026-02-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-02-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-02-13" OBS_VALUE="5.77375" BBK_DIFF_A="-0.05255"/>
      <bbk:Obs TIME_PERIOD="2026-02-12" OBS_VALUE="5.8263" BBK_DIFF_A="0.01959"/>
      <bbk:Obs TIME_PERIOD="2026-02-11" OBS_VALUE="5.80671" BBK_DIFF_A="0.09025"/>
      <bbk:Obs TIME_PERIOD="2026-02-10" OBS_VALUE="5.71646" BBK_DIFF_A="0.01448"/>
      <bbk:Obs TIME_PERIOD="2026-02-09" OBS_VALUE="5.70198" BBK_DIFF_A="0.06661"/>
      <bbk:Obs TIME_PERIOD="2026-02-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-02-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-02-06" OBS_VALUE="5.63537" BBK_DIFF_A="-0.13993"/>
      <bbk:Obs TIME_PERIOD="2026-02-05" OBS_VALUE="5.7753" BBK_DIFF_A="-0.18033"/>
      <bbk:Obs TIME_PERIOD="2026-02-04" OBS_VALUE="5.95563" BBK_DIFF_A="-0.00138"/>
      <bbk:Obs TIME_PERIOD="2026-02-03" OBS_VALUE="5.95701" BBK_DIFF_A="0.18222"/>
      <bbk:Obs TIME_PERIOD="2026-02-02" OBS_VALUE="5.77479" BBK_DIFF_A="0.04222"/>
      <bbk:Obs TIME_PERIOD="2026-02-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-01-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-01-30" OBS_VALUE="5.73257" BBK_DIFF_A="8.8E-4"/>
      <bbk:Obs TIME_PERIOD="2026-01-29" OBS_VALUE="5.73169" BBK_DIFF_A="0.11095"/>
      <bbk:Obs TIME_PERIOD="2026-01-28" OBS_VALUE="5.62074" BBK_DIFF_A="-0.61042"/>
      <bbk:Obs TIME_PERIOD="2026-01-27" OBS_VALUE="6.23116" BBK_DIFF_A="-0.05049"/>
      <bbk:Obs TIME_PERIOD="2026-01-26" OBS_VALUE="6.28165" BBK_DIFF_A="-0.0247"/>
      <bbk:Obs TIME_PERIOD="2026-01-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-01-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-01-23" OBS_VALUE="6.30635" BBK_DIFF_A="0.35053"/>
      <bbk:Obs TIME_PERIOD="2026-01-22" OBS_VALUE="5.95582" BBK_DIFF_A="0.56994"/>
      <bbk:Obs TIME_PERIOD="2026-01-21" OBS_VALUE="5.38588" BBK_DIFF_A="-0.19439"/>
      <bbk:Obs TIME_PERIOD="2026-01-20" OBS_VALUE="5.58027" BBK_DIFF_A="-0.31343"/>
      <bbk:Obs TIME_PERIOD="2026-01-19" OBS_VALUE="5.8937" BBK_DIFF_A="-0.53057"/>
      <bbk:Obs TIME_PERIOD="2026-01-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-01-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-01-16" OBS_VALUE="6.42427" BBK_DIFF_A="0.34079"/>
      <bbk:Obs TIME_PERIOD="2026-01-15" OBS_VALUE="6.08348" BBK_DIFF_A="0.02212"/>
      <bbk:Obs TIME_PERIOD="2026-01-14" OBS_VALUE="6.06136" BBK_DIFF_A="-0.06408"/>
      <bbk:Obs TIME_PERIOD="2026-01-13" OBS_VALUE="6.12544" BBK_DIFF_A="-0.06293"/>
      <bbk:Obs TIME_PERIOD="2026-01-12" OBS_VALUE="6.18837" BBK_DIFF_A="-0.13686"/>
      <bbk:Obs TIME_PERIOD="2026-01-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-01-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-01-09" OBS_VALUE="6.32523" BBK_DIFF_A="0.30435"/>
      <bbk:Obs TIME_PERIOD="2026-01-08" OBS_VALUE="6.02088" BBK_DIFF_A="0.30644"/>
      <bbk:Obs TIME_PERIOD="2026-01-07" OBS_VALUE="5.71444" BBK_DIFF_A="0.03644"/>
      <bbk:Obs TIME_PERIOD="2026-01-06" OBS_VALUE="5.678" BBK_DIFF_A="-0.22097"/>
      <bbk:Obs TIME_PERIOD="2026-01-05" OBS_VALUE="5.89897" BBK_DIFF_A="-0.3966"/>
      <bbk:Obs TIME_PERIOD="2026-01-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-01-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2026-01-02" OBS_VALUE="6.29557" BBK_DIFF_A="-0.02437"/>
      <bbk:Obs TIME_PERIOD="2026-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-12-30" OBS_VALUE="6.31994" BBK_DIFF_A="-0.15874"/>
      <bbk:Obs TIME_PERIOD="2025-12-29" OBS_VALUE="6.47868" BBK_DIFF_A="0.00228"/>
      <bbk:Obs TIME_PERIOD="2025-12-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-12-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-12-23" OBS_VALUE="6.4764" BBK_DIFF_A="0.14384"/>
      <bbk:Obs TIME_PERIOD="2025-12-22" OBS_VALUE="6.33256" BBK_DIFF_A="-0.03088"/>
      <bbk:Obs TIME_PERIOD="2025-12-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-12-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-12-19" OBS_VALUE="6.36344" BBK_DIFF_A="-0.0874"/>
      <bbk:Obs TIME_PERIOD="2025-12-18" OBS_VALUE="6.45084" BBK_DIFF_A="-0.00681"/>
      <bbk:Obs TIME_PERIOD="2025-12-17" OBS_VALUE="6.45765" BBK_DIFF_A="-0.54612"/>
      <bbk:Obs TIME_PERIOD="2025-12-16" OBS_VALUE="7.00377" BBK_DIFF_A="-0.01023"/>
      <bbk:Obs TIME_PERIOD="2025-12-15" OBS_VALUE="7.014" BBK_DIFF_A="-0.29736"/>
      <bbk:Obs TIME_PERIOD="2025-12-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-12-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-12-12" OBS_VALUE="7.31136" BBK_DIFF_A="0.00814"/>
      <bbk:Obs TIME_PERIOD="2025-12-11" OBS_VALUE="7.30322" BBK_DIFF_A="0.49975"/>
      <bbk:Obs TIME_PERIOD="2025-12-10" OBS_VALUE="6.80347" BBK_DIFF_A="0.12346"/>
      <bbk:Obs TIME_PERIOD="2025-12-09" OBS_VALUE="6.68001" BBK_DIFF_A="0.46672"/>
      <bbk:Obs TIME_PERIOD="2025-12-08" OBS_VALUE="6.21329" BBK_DIFF_A="0.50145"/>
      <bbk:Obs TIME_PERIOD="2025-12-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-12-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-12-05" OBS_VALUE="5.71184" BBK_DIFF_A="-0.0498"/>
      <bbk:Obs TIME_PERIOD="2025-12-04" OBS_VALUE="5.76164" BBK_DIFF_A="-0.2516"/>
      <bbk:Obs TIME_PERIOD="2025-12-03" OBS_VALUE="6.01324" BBK_DIFF_A="-0.29388"/>
      <bbk:Obs TIME_PERIOD="2025-12-02" OBS_VALUE="6.30712" BBK_DIFF_A="-0.07028"/>
      <bbk:Obs TIME_PERIOD="2025-12-01" OBS_VALUE="6.3774" BBK_DIFF_A="-0.01373"/>
      <bbk:Obs TIME_PERIOD="2025-11-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-11-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-11-28" OBS_VALUE="6.39113" BBK_DIFF_A="0.24324"/>
      <bbk:Obs TIME_PERIOD="2025-11-27" OBS_VALUE="6.14789" BBK_DIFF_A="0.41713"/>
      <bbk:Obs TIME_PERIOD="2025-11-26" OBS_VALUE="5.73076" BBK_DIFF_A="0.05793"/>
      <bbk:Obs TIME_PERIOD="2025-11-25" OBS_VALUE="5.67283" BBK_DIFF_A="0.26467"/>
      <bbk:Obs TIME_PERIOD="2025-11-24" OBS_VALUE="5.40816" BBK_DIFF_A="0.23994"/>
      <bbk:Obs TIME_PERIOD="2025-11-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-11-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-11-21" OBS_VALUE="5.16822" BBK_DIFF_A="-0.11515"/>
      <bbk:Obs TIME_PERIOD="2025-11-20" OBS_VALUE="5.28337" BBK_DIFF_A="0.00746"/>
      <bbk:Obs TIME_PERIOD="2025-11-19" OBS_VALUE="5.27591" BBK_DIFF_A="-0.19623"/>
      <bbk:Obs TIME_PERIOD="2025-11-18" OBS_VALUE="5.47214" BBK_DIFF_A="-0.01679"/>
      <bbk:Obs TIME_PERIOD="2025-11-17" OBS_VALUE="5.48893" BBK_DIFF_A="0.14418"/>
      <bbk:Obs TIME_PERIOD="2025-11-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-11-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-11-14" OBS_VALUE="5.34475" BBK_DIFF_A="-0.48475"/>
      <bbk:Obs TIME_PERIOD="2025-11-13" OBS_VALUE="5.8295" BBK_DIFF_A="-0.13089"/>
      <bbk:Obs TIME_PERIOD="2025-11-12" OBS_VALUE="5.96039" BBK_DIFF_A="0.11582"/>
      <bbk:Obs TIME_PERIOD="2025-11-11" OBS_VALUE="5.84457" BBK_DIFF_A="-0.03193"/>
      <bbk:Obs TIME_PERIOD="2025-11-10" OBS_VALUE="5.8765" BBK_DIFF_A="0.00309"/>
      <bbk:Obs TIME_PERIOD="2025-11-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-11-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-11-07" OBS_VALUE="5.87341" BBK_DIFF_A="0.04079"/>
      <bbk:Obs TIME_PERIOD="2025-11-06" OBS_VALUE="5.83262" BBK_DIFF_A="-0.01632"/>
      <bbk:Obs TIME_PERIOD="2025-11-05" OBS_VALUE="5.84894" BBK_DIFF_A="-0.00239"/>
      <bbk:Obs TIME_PERIOD="2025-11-04" OBS_VALUE="5.85133" BBK_DIFF_A="-0.10036"/>
      <bbk:Obs TIME_PERIOD="2025-11-03" OBS_VALUE="5.95169" BBK_DIFF_A="-0.08531"/>
      <bbk:Obs TIME_PERIOD="2025-11-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-11-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-10-31" OBS_VALUE="6.037" BBK_DIFF_A="-0.08305"/>
      <bbk:Obs TIME_PERIOD="2025-10-30" OBS_VALUE="6.12005" BBK_DIFF_A="0.21963"/>
      <bbk:Obs TIME_PERIOD="2025-10-29" OBS_VALUE="5.90042" BBK_DIFF_A="0.01898"/>
      <bbk:Obs TIME_PERIOD="2025-10-28" OBS_VALUE="5.88144" BBK_DIFF_A="0.08228"/>
      <bbk:Obs TIME_PERIOD="2025-10-27" OBS_VALUE="5.79916" BBK_DIFF_A="0.09303"/>
      <bbk:Obs TIME_PERIOD="2025-10-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-10-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-10-24" OBS_VALUE="5.70613" BBK_DIFF_A="0.18331"/>
      <bbk:Obs TIME_PERIOD="2025-10-23" OBS_VALUE="5.52282" BBK_DIFF_A="-0.09908"/>
      <bbk:Obs TIME_PERIOD="2025-10-22" OBS_VALUE="5.6219" BBK_DIFF_A="0.09408"/>
      <bbk:Obs TIME_PERIOD="2025-10-21" OBS_VALUE="5.52782" BBK_DIFF_A="0.09311"/>
      <bbk:Obs TIME_PERIOD="2025-10-20" OBS_VALUE="5.43471" BBK_DIFF_A="0.30268"/>
      <bbk:Obs TIME_PERIOD="2025-10-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-10-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-10-17" OBS_VALUE="5.13203" BBK_DIFF_A="-0.5415"/>
      <bbk:Obs TIME_PERIOD="2025-10-16" OBS_VALUE="5.67353" BBK_DIFF_A="0.22003"/>
      <bbk:Obs TIME_PERIOD="2025-10-15" OBS_VALUE="5.4535" BBK_DIFF_A="0.16196"/>
      <bbk:Obs TIME_PERIOD="2025-10-14" OBS_VALUE="5.29154" BBK_DIFF_A="-0.36396"/>
      <bbk:Obs TIME_PERIOD="2025-10-13" OBS_VALUE="5.6555" BBK_DIFF_A="0.13361"/>
      <bbk:Obs TIME_PERIOD="2025-10-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-10-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-10-10" OBS_VALUE="5.52189" BBK_DIFF_A="0.21142"/>
      <bbk:Obs TIME_PERIOD="2025-10-09" OBS_VALUE="5.31047" BBK_DIFF_A="-0.00941"/>
      <bbk:Obs TIME_PERIOD="2025-10-08" OBS_VALUE="5.31988" BBK_DIFF_A="0.09652"/>
      <bbk:Obs TIME_PERIOD="2025-10-07" OBS_VALUE="5.22336" BBK_DIFF_A="0.05874"/>
      <bbk:Obs TIME_PERIOD="2025-10-06" OBS_VALUE="5.16462" BBK_DIFF_A="-0.59184"/>
      <bbk:Obs TIME_PERIOD="2025-10-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-10-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-10-03" OBS_VALUE="5.75646" BBK_DIFF_A="-0.13599"/>
      <bbk:Obs TIME_PERIOD="2025-10-02" OBS_VALUE="5.89245" BBK_DIFF_A="0.18672"/>
      <bbk:Obs TIME_PERIOD="2025-10-01" OBS_VALUE="5.70573" BBK_DIFF_A="0.02448"/>
      <bbk:Obs TIME_PERIOD="2025-09-30" OBS_VALUE="5.68125" BBK_DIFF_A="0.07212"/>
      <bbk:Obs TIME_PERIOD="2025-09-29" OBS_VALUE="5.60913" BBK_DIFF_A="0.00231"/>
      <bbk:Obs TIME_PERIOD="2025-09-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-09-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-09-26" OBS_VALUE="5.60682" BBK_DIFF_A="0.10875"/>
      <bbk:Obs TIME_PERIOD="2025-09-25" OBS_VALUE="5.49807" BBK_DIFF_A="-0.00878"/>
      <bbk:Obs TIME_PERIOD="2025-09-24" OBS_VALUE="5.50685" BBK_DIFF_A="0.02894"/>
      <bbk:Obs TIME_PERIOD="2025-09-23" OBS_VALUE="5.47791" BBK_DIFF_A="0.0332"/>
      <bbk:Obs TIME_PERIOD="2025-09-22" OBS_VALUE="5.44471" BBK_DIFF_A="0.02893"/>
      <bbk:Obs TIME_PERIOD="2025-09-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-09-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-09-19" OBS_VALUE="5.41578" BBK_DIFF_A="-0.02611"/>
      <bbk:Obs TIME_PERIOD="2025-09-18" OBS_VALUE="5.44189" BBK_DIFF_A="-0.00606"/>
      <bbk:Obs TIME_PERIOD="2025-09-17" OBS_VALUE="5.44795" BBK_DIFF_A="-0.40207"/>
      <bbk:Obs TIME_PERIOD="2025-09-16" OBS_VALUE="5.85002" BBK_DIFF_A="0.09048"/>
      <bbk:Obs TIME_PERIOD="2025-09-15" OBS_VALUE="5.75954" BBK_DIFF_A="-0.12912"/>
      <bbk:Obs TIME_PERIOD="2025-09-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-09-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-09-12" OBS_VALUE="5.88866" BBK_DIFF_A="0.39661"/>
      <bbk:Obs TIME_PERIOD="2025-09-11" OBS_VALUE="5.49205" BBK_DIFF_A="0.2545"/>
      <bbk:Obs TIME_PERIOD="2025-09-10" OBS_VALUE="5.23755" BBK_DIFF_A="0.23885"/>
      <bbk:Obs TIME_PERIOD="2025-09-09" OBS_VALUE="4.9987" BBK_DIFF_A="-0.0152"/>
      <bbk:Obs TIME_PERIOD="2025-09-08" OBS_VALUE="5.0139" BBK_DIFF_A="-0.07534"/>
      <bbk:Obs TIME_PERIOD="2025-09-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-09-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-09-05" OBS_VALUE="5.08924" BBK_DIFF_A="0.2971"/>
      <bbk:Obs TIME_PERIOD="2025-09-04" OBS_VALUE="4.79214" BBK_DIFF_A="-0.01213"/>
      <bbk:Obs TIME_PERIOD="2025-09-03" OBS_VALUE="4.80427" BBK_DIFF_A="-0.20517"/>
      <bbk:Obs TIME_PERIOD="2025-09-02" OBS_VALUE="5.00944" BBK_DIFF_A="0.17677"/>
      <bbk:Obs TIME_PERIOD="2025-09-01" OBS_VALUE="4.83267" BBK_DIFF_A="-0.16757"/>
      <bbk:Obs TIME_PERIOD="2025-08-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-08-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-08-29" OBS_VALUE="5.00024" BBK_DIFF_A="0.0097"/>
      <bbk:Obs TIME_PERIOD="2025-08-28" OBS_VALUE="4.99054" BBK_DIFF_A="3.4E-4"/>
      <bbk:Obs TIME_PERIOD="2025-08-27" OBS_VALUE="4.9902" BBK_DIFF_A="0.01767"/>
      <bbk:Obs TIME_PERIOD="2025-08-26" OBS_VALUE="4.97253" BBK_DIFF_A="-0.26608"/>
      <bbk:Obs TIME_PERIOD="2025-08-25" OBS_VALUE="5.23861" BBK_DIFF_A="0.00382"/>
      <bbk:Obs TIME_PERIOD="2025-08-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-08-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-08-22" OBS_VALUE="5.23479" BBK_DIFF_A="0.11844"/>
      <bbk:Obs TIME_PERIOD="2025-08-21" OBS_VALUE="5.11635" BBK_DIFF_A="0.18505"/>
      <bbk:Obs TIME_PERIOD="2025-08-20" OBS_VALUE="4.9313" BBK_DIFF_A="-0.01973"/>
      <bbk:Obs TIME_PERIOD="2025-08-19" OBS_VALUE="4.95103" BBK_DIFF_A="0.07808"/>
      <bbk:Obs TIME_PERIOD="2025-08-18" OBS_VALUE="4.87295" BBK_DIFF_A="0.02554"/>
      <bbk:Obs TIME_PERIOD="2025-08-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-08-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-08-15" OBS_VALUE="4.84741" BBK_DIFF_A="-0.09749"/>
      <bbk:Obs TIME_PERIOD="2025-08-14" OBS_VALUE="4.9449" BBK_DIFF_A="-0.01204"/>
      <bbk:Obs TIME_PERIOD="2025-08-13" OBS_VALUE="4.95694" BBK_DIFF_A="-0.25086"/>
      <bbk:Obs TIME_PERIOD="2025-08-12" OBS_VALUE="5.2078" BBK_DIFF_A="-0.04041"/>
      <bbk:Obs TIME_PERIOD="2025-08-11" OBS_VALUE="5.24821" BBK_DIFF_A="-0.00841"/>
      <bbk:Obs TIME_PERIOD="2025-08-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-08-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-08-08" OBS_VALUE="5.25662" BBK_DIFF_A="0.23612"/>
      <bbk:Obs TIME_PERIOD="2025-08-07" OBS_VALUE="5.0205" BBK_DIFF_A="-0.03637"/>
      <bbk:Obs TIME_PERIOD="2025-08-06" OBS_VALUE="5.05687" BBK_DIFF_A="-0.06049"/>
      <bbk:Obs TIME_PERIOD="2025-08-05" OBS_VALUE="5.11736" BBK_DIFF_A="0.18114"/>
      <bbk:Obs TIME_PERIOD="2025-08-04" OBS_VALUE="4.93622" BBK_DIFF_A="-0.26052"/>
      <bbk:Obs TIME_PERIOD="2025-08-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-08-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-08-01" OBS_VALUE="5.19674" BBK_DIFF_A="-0.25123"/>
      <bbk:Obs TIME_PERIOD="2025-07-31" OBS_VALUE="5.44797" BBK_DIFF_A="0.17705"/>
      <bbk:Obs TIME_PERIOD="2025-07-30" OBS_VALUE="5.27092" BBK_DIFF_A="0.15935"/>
      <bbk:Obs TIME_PERIOD="2025-07-29" OBS_VALUE="5.11157" BBK_DIFF_A="-0.15453"/>
      <bbk:Obs TIME_PERIOD="2025-07-28" OBS_VALUE="5.2661" BBK_DIFF_A="-0.09627"/>
      <bbk:Obs TIME_PERIOD="2025-07-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-07-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-07-25" OBS_VALUE="5.36237" BBK_DIFF_A="0.36487"/>
      <bbk:Obs TIME_PERIOD="2025-07-24" OBS_VALUE="4.9975" BBK_DIFF_A="0.19365"/>
      <bbk:Obs TIME_PERIOD="2025-07-23" OBS_VALUE="4.80385" BBK_DIFF_A="-0.09164"/>
      <bbk:Obs TIME_PERIOD="2025-07-22" OBS_VALUE="4.89549" BBK_DIFF_A="0.12598"/>
      <bbk:Obs TIME_PERIOD="2025-07-21" OBS_VALUE="4.76951" BBK_DIFF_A="-0.13408"/>
      <bbk:Obs TIME_PERIOD="2025-07-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-07-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-07-18" OBS_VALUE="4.90359" BBK_DIFF_A="-9.04127"/>
      <bbk:Obs TIME_PERIOD="2025-07-17" OBS_VALUE="13.94486" BBK_DIFF_A="0.12351"/>
      <bbk:Obs TIME_PERIOD="2025-07-16" OBS_VALUE="13.82135" BBK_DIFF_A="-0.01246"/>
      <bbk:Obs TIME_PERIOD="2025-07-15" OBS_VALUE="13.83381" BBK_DIFF_A="-0.12306"/>
      <bbk:Obs TIME_PERIOD="2025-07-14" OBS_VALUE="13.95687" BBK_DIFF_A="0.05615"/>
      <bbk:Obs TIME_PERIOD="2025-07-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-07-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-07-11" OBS_VALUE="13.90072" BBK_DIFF_A="-0.03269"/>
      <bbk:Obs TIME_PERIOD="2025-07-10" OBS_VALUE="13.93341" BBK_DIFF_A="0.19123"/>
      <bbk:Obs TIME_PERIOD="2025-07-09" OBS_VALUE="13.74218" BBK_DIFF_A="0.01686"/>
      <bbk:Obs TIME_PERIOD="2025-07-08" OBS_VALUE="13.72532" BBK_DIFF_A="0.08037"/>
      <bbk:Obs TIME_PERIOD="2025-07-07" OBS_VALUE="13.64495" BBK_DIFF_A="-0.02118"/>
      <bbk:Obs TIME_PERIOD="2025-07-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-07-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-07-04" OBS_VALUE="13.66613" BBK_DIFF_A="0.14466"/>
      <bbk:Obs TIME_PERIOD="2025-07-03" OBS_VALUE="13.52147" BBK_DIFF_A="-0.07906"/>
      <bbk:Obs TIME_PERIOD="2025-07-02" OBS_VALUE="13.60053" BBK_DIFF_A="-0.10601"/>
      <bbk:Obs TIME_PERIOD="2025-07-01" OBS_VALUE="13.70654" BBK_DIFF_A="-0.01693"/>
      <bbk:Obs TIME_PERIOD="2025-06-30" OBS_VALUE="13.72347" BBK_DIFF_A="-0.08382"/>
      <bbk:Obs TIME_PERIOD="2025-06-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-06-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-06-27" OBS_VALUE="13.80729" BBK_DIFF_A="0.00767"/>
      <bbk:Obs TIME_PERIOD="2025-06-26" OBS_VALUE="13.79962" BBK_DIFF_A="0.04336"/>
      <bbk:Obs TIME_PERIOD="2025-06-25" OBS_VALUE="13.75626" BBK_DIFF_A="-0.13965"/>
      <bbk:Obs TIME_PERIOD="2025-06-24" OBS_VALUE="13.89591" BBK_DIFF_A="0.2866"/>
      <bbk:Obs TIME_PERIOD="2025-06-23" OBS_VALUE="13.60931" BBK_DIFF_A="0.10111"/>
      <bbk:Obs TIME_PERIOD="2025-06-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-06-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-06-20" OBS_VALUE="13.5082" BBK_DIFF_A="-0.03025"/>
      <bbk:Obs TIME_PERIOD="2025-06-19" OBS_VALUE="13.53845" BBK_DIFF_A="0.26435"/>
      <bbk:Obs TIME_PERIOD="2025-06-18" OBS_VALUE="13.2741" BBK_DIFF_A="-0.2057"/>
      <bbk:Obs TIME_PERIOD="2025-06-17" OBS_VALUE="13.4798" BBK_DIFF_A="-0.11247"/>
      <bbk:Obs TIME_PERIOD="2025-06-16" OBS_VALUE="13.59227" BBK_DIFF_A="-0.04089"/>
      <bbk:Obs TIME_PERIOD="2025-06-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-06-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-06-13" OBS_VALUE="13.63316" BBK_DIFF_A="-0.18329"/>
      <bbk:Obs TIME_PERIOD="2025-06-12" OBS_VALUE="13.81645" BBK_DIFF_A="0.16717"/>
      <bbk:Obs TIME_PERIOD="2025-06-11" OBS_VALUE="13.64928" BBK_DIFF_A="0.173"/>
      <bbk:Obs TIME_PERIOD="2025-06-10" OBS_VALUE="13.47628" BBK_DIFF_A="0.002"/>
      <bbk:Obs TIME_PERIOD="2025-06-09" OBS_VALUE="13.47428" BBK_DIFF_A="0.02816"/>
      <bbk:Obs TIME_PERIOD="2025-06-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-06-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-06-06" OBS_VALUE="13.44612" BBK_DIFF_A="-0.23797"/>
      <bbk:Obs TIME_PERIOD="2025-06-05" OBS_VALUE="13.68409" BBK_DIFF_A="-0.02381"/>
      <bbk:Obs TIME_PERIOD="2025-06-04" OBS_VALUE="13.7079" BBK_DIFF_A="-0.05872"/>
      <bbk:Obs TIME_PERIOD="2025-06-03" OBS_VALUE="13.76662" BBK_DIFF_A="0.11536"/>
      <bbk:Obs TIME_PERIOD="2025-06-02" OBS_VALUE="13.65126" BBK_DIFF_A="-0.04109"/>
      <bbk:Obs TIME_PERIOD="2025-06-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-05-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-05-30" OBS_VALUE="13.69235" BBK_DIFF_A="0.15321"/>
      <bbk:Obs TIME_PERIOD="2025-05-29" OBS_VALUE="13.53914" BBK_DIFF_A="0.10327"/>
      <bbk:Obs TIME_PERIOD="2025-05-28" OBS_VALUE="13.43587" BBK_DIFF_A="-0.20032"/>
      <bbk:Obs TIME_PERIOD="2025-05-27" OBS_VALUE="13.63619" BBK_DIFF_A="0.09253"/>
      <bbk:Obs TIME_PERIOD="2025-05-26" OBS_VALUE="13.54366" BBK_DIFF_A="0.00441"/>
      <bbk:Obs TIME_PERIOD="2025-05-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-05-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-05-23" OBS_VALUE="13.53925" BBK_DIFF_A="0.08417"/>
      <bbk:Obs TIME_PERIOD="2025-05-22" OBS_VALUE="13.45508" BBK_DIFF_A="0.08396"/>
      <bbk:Obs TIME_PERIOD="2025-05-21" OBS_VALUE="13.37112" BBK_DIFF_A="0.00429"/>
      <bbk:Obs TIME_PERIOD="2025-05-20" OBS_VALUE="13.36683" BBK_DIFF_A="0.18523"/>
      <bbk:Obs TIME_PERIOD="2025-05-19" OBS_VALUE="13.1816" BBK_DIFF_A="-0.08742"/>
      <bbk:Obs TIME_PERIOD="2025-05-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-05-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-05-16" OBS_VALUE="13.26902" BBK_DIFF_A="0.03927"/>
      <bbk:Obs TIME_PERIOD="2025-05-15" OBS_VALUE="13.22975" BBK_DIFF_A="0.05992"/>
      <bbk:Obs TIME_PERIOD="2025-05-14" OBS_VALUE="13.16983" BBK_DIFF_A="0.09642"/>
      <bbk:Obs TIME_PERIOD="2025-05-13" OBS_VALUE="13.07341" BBK_DIFF_A="0.0974"/>
      <bbk:Obs TIME_PERIOD="2025-05-12" OBS_VALUE="12.97601" BBK_DIFF_A="-0.11257"/>
      <bbk:Obs TIME_PERIOD="2025-05-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-05-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-05-09" OBS_VALUE="13.08858" BBK_DIFF_A="-0.15085"/>
      <bbk:Obs TIME_PERIOD="2025-05-08" OBS_VALUE="13.23943" BBK_DIFF_A="0.13534"/>
      <bbk:Obs TIME_PERIOD="2025-05-07" OBS_VALUE="13.10409" BBK_DIFF_A="0.01118"/>
      <bbk:Obs TIME_PERIOD="2025-05-06" OBS_VALUE="13.09291" BBK_DIFF_A="0.01742"/>
      <bbk:Obs TIME_PERIOD="2025-05-05" OBS_VALUE="13.07549" BBK_DIFF_A="0.04571"/>
      <bbk:Obs TIME_PERIOD="2025-05-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-05-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-05-02" OBS_VALUE="13.02978" BBK_DIFF_A="0.09529"/>
      <bbk:Obs TIME_PERIOD="2025-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-04-30" OBS_VALUE="12.93449" BBK_DIFF_A="0.02642"/>
      <bbk:Obs TIME_PERIOD="2025-04-29" OBS_VALUE="12.90807" BBK_DIFF_A="-0.13444"/>
      <bbk:Obs TIME_PERIOD="2025-04-28" OBS_VALUE="13.04251" BBK_DIFF_A="0.10995"/>
      <bbk:Obs TIME_PERIOD="2025-04-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-04-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-04-25" OBS_VALUE="12.93256" BBK_DIFF_A="-0.05174"/>
      <bbk:Obs TIME_PERIOD="2025-04-24" OBS_VALUE="12.9843" BBK_DIFF_A="0.20279"/>
      <bbk:Obs TIME_PERIOD="2025-04-23" OBS_VALUE="12.78151" BBK_DIFF_A="-0.02524"/>
      <bbk:Obs TIME_PERIOD="2025-04-22" OBS_VALUE="12.80675" BBK_DIFF_A="0.10842"/>
      <bbk:Obs TIME_PERIOD="2025-04-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-04-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-04-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-04-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-04-17" OBS_VALUE="12.69833" BBK_DIFF_A="0.19077"/>
      <bbk:Obs TIME_PERIOD="2025-04-16" OBS_VALUE="12.50756" BBK_DIFF_A="-0.09918"/>
      <bbk:Obs TIME_PERIOD="2025-04-15" OBS_VALUE="12.60674" BBK_DIFF_A="1.03244"/>
      <bbk:Obs TIME_PERIOD="2025-04-14" OBS_VALUE="11.5743" BBK_DIFF_A="-0.4902"/>
      <bbk:Obs TIME_PERIOD="2025-04-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-04-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-04-11" OBS_VALUE="12.0645" BBK_DIFF_A="-0.05048"/>
      <bbk:Obs TIME_PERIOD="2025-04-10" OBS_VALUE="12.11498" BBK_DIFF_A="4.95354"/>
      <bbk:Obs TIME_PERIOD="2025-04-09" OBS_VALUE="7.16144" BBK_DIFF_A="-0.70764"/>
      <bbk:Obs TIME_PERIOD="2025-04-08" OBS_VALUE="7.86908" BBK_DIFF_A="-3.45519"/>
      <bbk:Obs TIME_PERIOD="2025-04-07" OBS_VALUE="11.32427" BBK_DIFF_A="-1.0561"/>
      <bbk:Obs TIME_PERIOD="2025-04-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-04-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-04-04" OBS_VALUE="12.38037" BBK_DIFF_A="1.67821"/>
      <bbk:Obs TIME_PERIOD="2025-04-03" OBS_VALUE="10.70216" BBK_DIFF_A="1.8931"/>
      <bbk:Obs TIME_PERIOD="2025-04-02" OBS_VALUE="8.80906" BBK_DIFF_A="-0.25345"/>
      <bbk:Obs TIME_PERIOD="2025-04-01" OBS_VALUE="9.06251" BBK_DIFF_A="-0.41697"/>
      <bbk:Obs TIME_PERIOD="2025-03-31" OBS_VALUE="9.47948" BBK_DIFF_A="2.54456"/>
      <bbk:Obs TIME_PERIOD="2025-03-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-03-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-03-28" OBS_VALUE="6.93492" BBK_DIFF_A="2.17896"/>
      <bbk:Obs TIME_PERIOD="2025-03-27" OBS_VALUE="4.75596" BBK_DIFF_A="-0.10544"/>
      <bbk:Obs TIME_PERIOD="2025-03-26" OBS_VALUE="4.8614" BBK_DIFF_A="-0.16692"/>
      <bbk:Obs TIME_PERIOD="2025-03-25" OBS_VALUE="5.02832" BBK_DIFF_A="-0.10988"/>
      <bbk:Obs TIME_PERIOD="2025-03-24" OBS_VALUE="5.1382" BBK_DIFF_A="-7.39106"/>
      <bbk:Obs TIME_PERIOD="2025-03-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-03-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-03-21" OBS_VALUE="12.52926" BBK_DIFF_A="0.15644"/>
      <bbk:Obs TIME_PERIOD="2025-03-20" OBS_VALUE="12.37282" BBK_DIFF_A="-0.03187"/>
      <bbk:Obs TIME_PERIOD="2025-03-19" OBS_VALUE="12.40469" BBK_DIFF_A="0.19341"/>
      <bbk:Obs TIME_PERIOD="2025-03-18" OBS_VALUE="12.21128" BBK_DIFF_A="-0.0221"/>
      <bbk:Obs TIME_PERIOD="2025-03-17" OBS_VALUE="12.23338" BBK_DIFF_A="0.02135"/>
      <bbk:Obs TIME_PERIOD="2025-03-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-03-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-03-14" OBS_VALUE="12.21203" BBK_DIFF_A="0.07022"/>
      <bbk:Obs TIME_PERIOD="2025-03-13" OBS_VALUE="12.14181" BBK_DIFF_A="0.19753"/>
      <bbk:Obs TIME_PERIOD="2025-03-12" OBS_VALUE="11.94428" BBK_DIFF_A="-0.05057"/>
      <bbk:Obs TIME_PERIOD="2025-03-11" OBS_VALUE="11.99485" BBK_DIFF_A="0.07731"/>
      <bbk:Obs TIME_PERIOD="2025-03-10" OBS_VALUE="11.91754" BBK_DIFF_A="0.0671"/>
      <bbk:Obs TIME_PERIOD="2025-03-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-03-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-03-07" OBS_VALUE="11.85044" BBK_DIFF_A="0.29325"/>
      <bbk:Obs TIME_PERIOD="2025-03-06" OBS_VALUE="11.55719" BBK_DIFF_A="-1.0387"/>
      <bbk:Obs TIME_PERIOD="2025-03-05" OBS_VALUE="12.59589" BBK_DIFF_A="-0.23116"/>
      <bbk:Obs TIME_PERIOD="2025-03-04" OBS_VALUE="12.82705" BBK_DIFF_A="0.06731"/>
      <bbk:Obs TIME_PERIOD="2025-03-03" OBS_VALUE="12.75974" BBK_DIFF_A="4.0E-4"/>
      <bbk:Obs TIME_PERIOD="2025-03-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-03-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-02-28" OBS_VALUE="12.75934" BBK_DIFF_A="0.0982"/>
      <bbk:Obs TIME_PERIOD="2025-02-27" OBS_VALUE="12.66114" BBK_DIFF_A="0.09218"/>
      <bbk:Obs TIME_PERIOD="2025-02-26" OBS_VALUE="12.56896" BBK_DIFF_A="-0.25815"/>
      <bbk:Obs TIME_PERIOD="2025-02-25" OBS_VALUE="12.82711" BBK_DIFF_A="0.19651"/>
      <bbk:Obs TIME_PERIOD="2025-02-24" OBS_VALUE="12.6306" BBK_DIFF_A="0.1069"/>
      <bbk:Obs TIME_PERIOD="2025-02-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-02-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-02-21" OBS_VALUE="12.5237" BBK_DIFF_A="0.05058"/>
      <bbk:Obs TIME_PERIOD="2025-02-20" OBS_VALUE="12.47312" BBK_DIFF_A="-0.09158"/>
      <bbk:Obs TIME_PERIOD="2025-02-19" OBS_VALUE="12.5647" BBK_DIFF_A="0.01884"/>
      <bbk:Obs TIME_PERIOD="2025-02-18" OBS_VALUE="12.54586" BBK_DIFF_A="-0.13973"/>
      <bbk:Obs TIME_PERIOD="2025-02-17" OBS_VALUE="12.68559" BBK_DIFF_A="0.09306"/>
      <bbk:Obs TIME_PERIOD="2025-02-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-02-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-02-14" OBS_VALUE="12.59253" BBK_DIFF_A="0.02313"/>
      <bbk:Obs TIME_PERIOD="2025-02-13" OBS_VALUE="12.5694" BBK_DIFF_A="-0.09495"/>
      <bbk:Obs TIME_PERIOD="2025-02-12" OBS_VALUE="12.66435" BBK_DIFF_A="0.0443"/>
      <bbk:Obs TIME_PERIOD="2025-02-11" OBS_VALUE="12.62005" BBK_DIFF_A="-0.02236"/>
      <bbk:Obs TIME_PERIOD="2025-02-10" OBS_VALUE="12.64241" BBK_DIFF_A="0.1449"/>
      <bbk:Obs TIME_PERIOD="2025-02-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-02-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-02-07" OBS_VALUE="12.49751" BBK_DIFF_A="0.05564"/>
      <bbk:Obs TIME_PERIOD="2025-02-06" OBS_VALUE="12.44187" BBK_DIFF_A="-0.12813"/>
      <bbk:Obs TIME_PERIOD="2025-02-05" OBS_VALUE="12.57" BBK_DIFF_A="-0.04624"/>
      <bbk:Obs TIME_PERIOD="2025-02-04" OBS_VALUE="12.61624" BBK_DIFF_A="0.20374"/>
      <bbk:Obs TIME_PERIOD="2025-02-03" OBS_VALUE="12.4125" BBK_DIFF_A="-0.22958"/>
      <bbk:Obs TIME_PERIOD="2025-02-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-02-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-01-31" OBS_VALUE="12.64208" BBK_DIFF_A="0.07633"/>
      <bbk:Obs TIME_PERIOD="2025-01-30" OBS_VALUE="12.56575" BBK_DIFF_A="0.08022"/>
      <bbk:Obs TIME_PERIOD="2025-01-29" OBS_VALUE="12.48553" BBK_DIFF_A="0.05976"/>
      <bbk:Obs TIME_PERIOD="2025-01-28" OBS_VALUE="12.42577" BBK_DIFF_A="-0.04456"/>
      <bbk:Obs TIME_PERIOD="2025-01-27" OBS_VALUE="12.47033" BBK_DIFF_A="0.12957"/>
      <bbk:Obs TIME_PERIOD="2025-01-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-01-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-01-24" OBS_VALUE="12.34076" BBK_DIFF_A="-0.11925"/>
      <bbk:Obs TIME_PERIOD="2025-01-23" OBS_VALUE="12.46001" BBK_DIFF_A="-0.0525"/>
      <bbk:Obs TIME_PERIOD="2025-01-22" OBS_VALUE="12.51251" BBK_DIFF_A="0.00414"/>
      <bbk:Obs TIME_PERIOD="2025-01-21" OBS_VALUE="12.50837" BBK_DIFF_A="-0.14135"/>
      <bbk:Obs TIME_PERIOD="2025-01-20" OBS_VALUE="12.64972" BBK_DIFF_A="0.04965"/>
      <bbk:Obs TIME_PERIOD="2025-01-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-01-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-01-17" OBS_VALUE="12.60007" BBK_DIFF_A="0.05068"/>
      <bbk:Obs TIME_PERIOD="2025-01-16" OBS_VALUE="12.54939" BBK_DIFF_A="0.16609"/>
      <bbk:Obs TIME_PERIOD="2025-01-15" OBS_VALUE="12.3833" BBK_DIFF_A="0.30115"/>
      <bbk:Obs TIME_PERIOD="2025-01-14" OBS_VALUE="12.08215" BBK_DIFF_A="0.20876"/>
      <bbk:Obs TIME_PERIOD="2025-01-13" OBS_VALUE="11.87339" BBK_DIFF_A="-0.17932"/>
      <bbk:Obs TIME_PERIOD="2025-01-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-01-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-01-10" OBS_VALUE="12.05271" BBK_DIFF_A="-0.07814"/>
      <bbk:Obs TIME_PERIOD="2025-01-09" OBS_VALUE="12.13085" BBK_DIFF_A="-0.06657"/>
      <bbk:Obs TIME_PERIOD="2025-01-08" OBS_VALUE="12.19742" BBK_DIFF_A="0.0534"/>
      <bbk:Obs TIME_PERIOD="2025-01-07" OBS_VALUE="12.14402" BBK_DIFF_A="0.09162"/>
      <bbk:Obs TIME_PERIOD="2025-01-06" OBS_VALUE="12.0524" BBK_DIFF_A="-0.26453"/>
      <bbk:Obs TIME_PERIOD="2025-01-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-01-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2025-01-03" OBS_VALUE="12.31693" BBK_DIFF_A="0.01634"/>
      <bbk:Obs TIME_PERIOD="2025-01-02" OBS_VALUE="12.30059" BBK_DIFF_A="0.00316"/>
      <bbk:Obs TIME_PERIOD="2025-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-12-30" OBS_VALUE="12.29743" BBK_DIFF_A="0.10227"/>
      <bbk:Obs TIME_PERIOD="2024-12-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-12-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-12-27" OBS_VALUE="12.19516" BBK_DIFF_A="0.01963"/>
      <bbk:Obs TIME_PERIOD="2024-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-12-23" OBS_VALUE="12.17553" BBK_DIFF_A="-0.20023"/>
      <bbk:Obs TIME_PERIOD="2024-12-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-12-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-12-20" OBS_VALUE="12.37576" BBK_DIFF_A="0.1343"/>
      <bbk:Obs TIME_PERIOD="2024-12-19" OBS_VALUE="12.24146" BBK_DIFF_A="-0.19468"/>
      <bbk:Obs TIME_PERIOD="2024-12-18" OBS_VALUE="12.43614" BBK_DIFF_A="-0.07111"/>
      <bbk:Obs TIME_PERIOD="2024-12-17" OBS_VALUE="12.50725" BBK_DIFF_A="0.12831"/>
      <bbk:Obs TIME_PERIOD="2024-12-16" OBS_VALUE="12.37894" BBK_DIFF_A="-0.16943"/>
      <bbk:Obs TIME_PERIOD="2024-12-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-12-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-12-13" OBS_VALUE="12.54837" BBK_DIFF_A="-0.23036"/>
      <bbk:Obs TIME_PERIOD="2024-12-12" OBS_VALUE="12.77873" BBK_DIFF_A="0.15603"/>
      <bbk:Obs TIME_PERIOD="2024-12-11" OBS_VALUE="12.6227" BBK_DIFF_A="-0.26561"/>
      <bbk:Obs TIME_PERIOD="2024-12-10" OBS_VALUE="12.88831" BBK_DIFF_A="0.20123"/>
      <bbk:Obs TIME_PERIOD="2024-12-09" OBS_VALUE="12.68708" BBK_DIFF_A="0.27259"/>
      <bbk:Obs TIME_PERIOD="2024-12-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-12-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-12-06" OBS_VALUE="12.41449" BBK_DIFF_A="-0.54486"/>
      <bbk:Obs TIME_PERIOD="2024-12-05" OBS_VALUE="12.95935" BBK_DIFF_A="0.15318"/>
      <bbk:Obs TIME_PERIOD="2024-12-04" OBS_VALUE="12.80617" BBK_DIFF_A="-0.2807"/>
      <bbk:Obs TIME_PERIOD="2024-12-03" OBS_VALUE="13.08687" BBK_DIFF_A="0.21173"/>
      <bbk:Obs TIME_PERIOD="2024-12-02" OBS_VALUE="12.87514" BBK_DIFF_A="0.11658"/>
      <bbk:Obs TIME_PERIOD="2024-12-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-11-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-11-29" OBS_VALUE="12.75856" BBK_DIFF_A="0.01359"/>
      <bbk:Obs TIME_PERIOD="2024-11-28" OBS_VALUE="12.74497" BBK_DIFF_A="0.19796"/>
      <bbk:Obs TIME_PERIOD="2024-11-27" OBS_VALUE="12.54701" BBK_DIFF_A="-0.51999"/>
      <bbk:Obs TIME_PERIOD="2024-11-26" OBS_VALUE="13.067" BBK_DIFF_A="0.40693"/>
      <bbk:Obs TIME_PERIOD="2024-11-25" OBS_VALUE="12.66007" BBK_DIFF_A="-0.17853"/>
      <bbk:Obs TIME_PERIOD="2024-11-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-11-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-11-22" OBS_VALUE="12.8386" BBK_DIFF_A="0.56504"/>
      <bbk:Obs TIME_PERIOD="2024-11-21" OBS_VALUE="12.27356" BBK_DIFF_A="-0.06458"/>
      <bbk:Obs TIME_PERIOD="2024-11-20" OBS_VALUE="12.33814" BBK_DIFF_A="-0.19062"/>
      <bbk:Obs TIME_PERIOD="2024-11-19" OBS_VALUE="12.52876" BBK_DIFF_A="-0.08201"/>
      <bbk:Obs TIME_PERIOD="2024-11-18" OBS_VALUE="12.61077" BBK_DIFF_A="0.06026"/>
      <bbk:Obs TIME_PERIOD="2024-11-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-11-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-11-15" OBS_VALUE="12.55051" BBK_DIFF_A="0.29902"/>
      <bbk:Obs TIME_PERIOD="2024-11-14" OBS_VALUE="12.25149" BBK_DIFF_A="0.24795"/>
      <bbk:Obs TIME_PERIOD="2024-11-13" OBS_VALUE="12.00354" BBK_DIFF_A="-0.52332"/>
      <bbk:Obs TIME_PERIOD="2024-11-12" OBS_VALUE="12.52686" BBK_DIFF_A="-0.22186"/>
      <bbk:Obs TIME_PERIOD="2024-11-11" OBS_VALUE="12.74872" BBK_DIFF_A="-0.1726"/>
      <bbk:Obs TIME_PERIOD="2024-11-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-11-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-11-08" OBS_VALUE="12.92132" BBK_DIFF_A="0.34297"/>
      <bbk:Obs TIME_PERIOD="2024-11-07" OBS_VALUE="12.57835" BBK_DIFF_A="-0.10116"/>
      <bbk:Obs TIME_PERIOD="2024-11-06" OBS_VALUE="12.67951" BBK_DIFF_A="0.29847"/>
      <bbk:Obs TIME_PERIOD="2024-11-05" OBS_VALUE="12.38104" BBK_DIFF_A="-0.00685"/>
      <bbk:Obs TIME_PERIOD="2024-11-04" OBS_VALUE="12.38789" BBK_DIFF_A="-0.47894"/>
      <bbk:Obs TIME_PERIOD="2024-11-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-11-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-11-01" OBS_VALUE="12.86683" BBK_DIFF_A="0.11332"/>
      <bbk:Obs TIME_PERIOD="2024-10-31" OBS_VALUE="12.75351" BBK_DIFF_A="-0.4395"/>
      <bbk:Obs TIME_PERIOD="2024-10-30" OBS_VALUE="13.19301" BBK_DIFF_A="-0.07988"/>
      <bbk:Obs TIME_PERIOD="2024-10-29" OBS_VALUE="13.27289" BBK_DIFF_A="-0.06881"/>
      <bbk:Obs TIME_PERIOD="2024-10-28" OBS_VALUE="13.3417" BBK_DIFF_A="-0.07801"/>
      <bbk:Obs TIME_PERIOD="2024-10-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-10-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-10-25" OBS_VALUE="13.41971" BBK_DIFF_A="-0.02473"/>
      <bbk:Obs TIME_PERIOD="2024-10-24" OBS_VALUE="13.44444" BBK_DIFF_A="-0.12198"/>
      <bbk:Obs TIME_PERIOD="2024-10-23" OBS_VALUE="13.56642" BBK_DIFF_A="-0.00958"/>
      <bbk:Obs TIME_PERIOD="2024-10-22" OBS_VALUE="13.576" BBK_DIFF_A="-0.30727"/>
      <bbk:Obs TIME_PERIOD="2024-10-21" OBS_VALUE="13.88327" BBK_DIFF_A="0.09003"/>
      <bbk:Obs TIME_PERIOD="2024-10-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-10-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-10-18" OBS_VALUE="13.79324" BBK_DIFF_A="0.05853"/>
      <bbk:Obs TIME_PERIOD="2024-10-17" OBS_VALUE="13.73471" BBK_DIFF_A="-0.1965"/>
      <bbk:Obs TIME_PERIOD="2024-10-16" OBS_VALUE="13.93121" BBK_DIFF_A="0.18221"/>
      <bbk:Obs TIME_PERIOD="2024-10-15" OBS_VALUE="13.749" BBK_DIFF_A="0.03165"/>
      <bbk:Obs TIME_PERIOD="2024-10-14" OBS_VALUE="13.71735" BBK_DIFF_A="0.10313"/>
      <bbk:Obs TIME_PERIOD="2024-10-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-10-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-10-11" OBS_VALUE="13.61422" BBK_DIFF_A="0.04168"/>
      <bbk:Obs TIME_PERIOD="2024-10-10" OBS_VALUE="13.57254" BBK_DIFF_A="-0.15636"/>
      <bbk:Obs TIME_PERIOD="2024-10-09" OBS_VALUE="13.7289" BBK_DIFF_A="0.10299"/>
      <bbk:Obs TIME_PERIOD="2024-10-08" OBS_VALUE="13.62591" BBK_DIFF_A="0.12111"/>
      <bbk:Obs TIME_PERIOD="2024-10-07" OBS_VALUE="13.5048" BBK_DIFF_A="-0.49297"/>
      <bbk:Obs TIME_PERIOD="2024-10-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-10-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-10-04" OBS_VALUE="13.99777" BBK_DIFF_A="0.18418"/>
      <bbk:Obs TIME_PERIOD="2024-10-03" OBS_VALUE="13.81359" BBK_DIFF_A="-0.13987"/>
      <bbk:Obs TIME_PERIOD="2024-10-02" OBS_VALUE="13.95346" BBK_DIFF_A="-0.03098"/>
      <bbk:Obs TIME_PERIOD="2024-10-01" OBS_VALUE="13.98444" BBK_DIFF_A="-0.07736"/>
      <bbk:Obs TIME_PERIOD="2024-09-30" OBS_VALUE="14.0618" BBK_DIFF_A="0.07605"/>
      <bbk:Obs TIME_PERIOD="2024-09-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-09-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-09-27" OBS_VALUE="13.98575" BBK_DIFF_A="0.00591"/>
      <bbk:Obs TIME_PERIOD="2024-09-26" OBS_VALUE="13.97984" BBK_DIFF_A="-0.00134"/>
      <bbk:Obs TIME_PERIOD="2024-09-25" OBS_VALUE="13.98118" BBK_DIFF_A="-0.32024"/>
      <bbk:Obs TIME_PERIOD="2024-09-24" OBS_VALUE="14.30142" BBK_DIFF_A="-0.21769"/>
      <bbk:Obs TIME_PERIOD="2024-09-23" OBS_VALUE="14.51911" BBK_DIFF_A="0.3355"/>
      <bbk:Obs TIME_PERIOD="2024-09-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-09-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-09-20" OBS_VALUE="14.18361" BBK_DIFF_A="0.18252"/>
      <bbk:Obs TIME_PERIOD="2024-09-19" OBS_VALUE="14.00109" BBK_DIFF_A="0.03181"/>
      <bbk:Obs TIME_PERIOD="2024-09-18" OBS_VALUE="13.96928" BBK_DIFF_A="-0.09332"/>
      <bbk:Obs TIME_PERIOD="2024-09-17" OBS_VALUE="14.0626" BBK_DIFF_A="0.16591"/>
      <bbk:Obs TIME_PERIOD="2024-09-16" OBS_VALUE="13.89669" BBK_DIFF_A="-0.10186"/>
      <bbk:Obs TIME_PERIOD="2024-09-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-09-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-09-13" OBS_VALUE="13.99855" BBK_DIFF_A="-0.0201"/>
      <bbk:Obs TIME_PERIOD="2024-09-12" OBS_VALUE="14.01865" BBK_DIFF_A="-0.01484"/>
      <bbk:Obs TIME_PERIOD="2024-09-11" OBS_VALUE="14.03349" BBK_DIFF_A="0.11069"/>
      <bbk:Obs TIME_PERIOD="2024-09-10" OBS_VALUE="13.9228" BBK_DIFF_A="0.24299"/>
      <bbk:Obs TIME_PERIOD="2024-09-09" OBS_VALUE="13.67981" BBK_DIFF_A="-0.02205"/>
      <bbk:Obs TIME_PERIOD="2024-09-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-09-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-09-06" OBS_VALUE="13.70186" BBK_DIFF_A="0.14521"/>
      <bbk:Obs TIME_PERIOD="2024-09-05" OBS_VALUE="13.55665" BBK_DIFF_A="-0.08411"/>
      <bbk:Obs TIME_PERIOD="2024-09-04" OBS_VALUE="13.64076" BBK_DIFF_A="0.10813"/>
      <bbk:Obs TIME_PERIOD="2024-09-03" OBS_VALUE="13.53263" BBK_DIFF_A="-0.09529"/>
      <bbk:Obs TIME_PERIOD="2024-09-02" OBS_VALUE="13.62792" BBK_DIFF_A="-0.04348"/>
      <bbk:Obs TIME_PERIOD="2024-09-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-08-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-08-30" OBS_VALUE="13.6714" BBK_DIFF_A="-0.13318"/>
      <bbk:Obs TIME_PERIOD="2024-08-29" OBS_VALUE="13.80458" BBK_DIFF_A="-0.07454"/>
      <bbk:Obs TIME_PERIOD="2024-08-28" OBS_VALUE="13.87912" BBK_DIFF_A="0.01367"/>
      <bbk:Obs TIME_PERIOD="2024-08-27" OBS_VALUE="13.86545" BBK_DIFF_A="-0.04421"/>
      <bbk:Obs TIME_PERIOD="2024-08-26" OBS_VALUE="13.90966" BBK_DIFF_A="0.22156"/>
      <bbk:Obs TIME_PERIOD="2024-08-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-08-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-08-23" OBS_VALUE="13.6881" BBK_DIFF_A="-0.16783"/>
      <bbk:Obs TIME_PERIOD="2024-08-22" OBS_VALUE="13.85593" BBK_DIFF_A="0.15247"/>
      <bbk:Obs TIME_PERIOD="2024-08-21" OBS_VALUE="13.70346" BBK_DIFF_A="0.0677"/>
      <bbk:Obs TIME_PERIOD="2024-08-20" OBS_VALUE="13.63576" BBK_DIFF_A="0.10377"/>
      <bbk:Obs TIME_PERIOD="2024-08-19" OBS_VALUE="13.53199" BBK_DIFF_A="-0.05696"/>
      <bbk:Obs TIME_PERIOD="2024-08-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-08-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-08-16" OBS_VALUE="13.58895" BBK_DIFF_A="-0.08388"/>
      <bbk:Obs TIME_PERIOD="2024-08-15" OBS_VALUE="13.67283" BBK_DIFF_A="-4.7E-4"/>
      <bbk:Obs TIME_PERIOD="2024-08-14" OBS_VALUE="13.6733" BBK_DIFF_A="0.12411"/>
      <bbk:Obs TIME_PERIOD="2024-08-13" OBS_VALUE="13.54919" BBK_DIFF_A="7.25089"/>
      <bbk:Obs TIME_PERIOD="2024-08-12" OBS_VALUE="6.2983" BBK_DIFF_A="-7.36021"/>
      <bbk:Obs TIME_PERIOD="2024-08-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-08-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-08-09" OBS_VALUE="13.65851" BBK_DIFF_A="0.04298"/>
      <bbk:Obs TIME_PERIOD="2024-08-08" OBS_VALUE="13.61553" BBK_DIFF_A="0.16567"/>
      <bbk:Obs TIME_PERIOD="2024-08-07" OBS_VALUE="13.44986" BBK_DIFF_A="-0.09653"/>
      <bbk:Obs TIME_PERIOD="2024-08-06" OBS_VALUE="13.54639" BBK_DIFF_A="-0.45071"/>
      <bbk:Obs TIME_PERIOD="2024-08-05" OBS_VALUE="13.9971" BBK_DIFF_A="0.31787"/>
      <bbk:Obs TIME_PERIOD="2024-08-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-08-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-08-02" OBS_VALUE="13.67923" BBK_DIFF_A="-0.03456"/>
      <bbk:Obs TIME_PERIOD="2024-08-01" OBS_VALUE="13.71379" BBK_DIFF_A="0.21506"/>
      <bbk:Obs TIME_PERIOD="2024-07-31" OBS_VALUE="13.49873" BBK_DIFF_A="0.38272"/>
      <bbk:Obs TIME_PERIOD="2024-07-30" OBS_VALUE="13.11601" BBK_DIFF_A="-0.34942"/>
      <bbk:Obs TIME_PERIOD="2024-07-29" OBS_VALUE="13.46543" BBK_DIFF_A="0.21137"/>
      <bbk:Obs TIME_PERIOD="2024-07-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-07-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-07-26" OBS_VALUE="13.25406" BBK_DIFF_A="0.01189"/>
      <bbk:Obs TIME_PERIOD="2024-07-25" OBS_VALUE="13.24217" BBK_DIFF_A="0.4688"/>
      <bbk:Obs TIME_PERIOD="2024-07-24" OBS_VALUE="12.77337" BBK_DIFF_A="3.57122"/>
      <bbk:Obs TIME_PERIOD="2024-07-23" OBS_VALUE="9.20215" BBK_DIFF_A="5.9073"/>
      <bbk:Obs TIME_PERIOD="2024-07-22" OBS_VALUE="3.29485" BBK_DIFF_A="0.15827"/>
      <bbk:Obs TIME_PERIOD="2024-07-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-07-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-07-19" OBS_VALUE="3.13658" BBK_DIFF_A="-0.23598"/>
      <bbk:Obs TIME_PERIOD="2024-07-18" OBS_VALUE="3.37256" BBK_DIFF_A="0.16569"/>
      <bbk:Obs TIME_PERIOD="2024-07-17" OBS_VALUE="3.20687" BBK_DIFF_A="-1.94163"/>
      <bbk:Obs TIME_PERIOD="2024-07-16" OBS_VALUE="5.1485" BBK_DIFF_A="-0.3331"/>
      <bbk:Obs TIME_PERIOD="2024-07-15" OBS_VALUE="5.4816" BBK_DIFF_A="0.61884"/>
      <bbk:Obs TIME_PERIOD="2024-07-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-07-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-07-12" OBS_VALUE="4.86276" BBK_DIFF_A="-0.66342"/>
      <bbk:Obs TIME_PERIOD="2024-07-11" OBS_VALUE="5.52618" BBK_DIFF_A="-0.65478"/>
      <bbk:Obs TIME_PERIOD="2024-07-10" OBS_VALUE="6.18096" BBK_DIFF_A="-0.08109"/>
      <bbk:Obs TIME_PERIOD="2024-07-09" OBS_VALUE="6.26205" BBK_DIFF_A="0.13847"/>
      <bbk:Obs TIME_PERIOD="2024-07-08" OBS_VALUE="6.12358" BBK_DIFF_A="-0.01306"/>
      <bbk:Obs TIME_PERIOD="2024-07-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-07-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-07-05" OBS_VALUE="6.13664" BBK_DIFF_A="0.22143"/>
      <bbk:Obs TIME_PERIOD="2024-07-04" OBS_VALUE="5.91521" BBK_DIFF_A="-0.37294"/>
      <bbk:Obs TIME_PERIOD="2024-07-03" OBS_VALUE="6.28815" BBK_DIFF_A="0.51303"/>
      <bbk:Obs TIME_PERIOD="2024-07-02" OBS_VALUE="5.77512" BBK_DIFF_A="-0.2387"/>
      <bbk:Obs TIME_PERIOD="2024-07-01" OBS_VALUE="6.01382" BBK_DIFF_A="0.43365"/>
      <bbk:Obs TIME_PERIOD="2024-06-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-06-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-06-28" OBS_VALUE="5.58017" BBK_DIFF_A="-0.02465"/>
      <bbk:Obs TIME_PERIOD="2024-06-27" OBS_VALUE="5.60482" BBK_DIFF_A="-0.16849"/>
      <bbk:Obs TIME_PERIOD="2024-06-26" OBS_VALUE="5.77331" BBK_DIFF_A="-0.26205"/>
      <bbk:Obs TIME_PERIOD="2024-06-25" OBS_VALUE="6.03536" BBK_DIFF_A="0.04959"/>
      <bbk:Obs TIME_PERIOD="2024-06-24" OBS_VALUE="5.98577" BBK_DIFF_A="0.13471"/>
      <bbk:Obs TIME_PERIOD="2024-06-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-06-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-06-21" OBS_VALUE="5.85106" BBK_DIFF_A="-0.6775"/>
      <bbk:Obs TIME_PERIOD="2024-06-20" OBS_VALUE="6.52856" BBK_DIFF_A="0.86246"/>
      <bbk:Obs TIME_PERIOD="2024-06-19" OBS_VALUE="5.6661" BBK_DIFF_A="-0.09744"/>
      <bbk:Obs TIME_PERIOD="2024-06-18" OBS_VALUE="5.76354" BBK_DIFF_A="0.76135"/>
      <bbk:Obs TIME_PERIOD="2024-06-17" OBS_VALUE="5.00219" BBK_DIFF_A="-0.29777"/>
      <bbk:Obs TIME_PERIOD="2024-06-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-06-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-06-14" OBS_VALUE="5.29996" BBK_DIFF_A="-0.91845"/>
      <bbk:Obs TIME_PERIOD="2024-06-13" OBS_VALUE="6.21841" BBK_DIFF_A="-0.28388"/>
      <bbk:Obs TIME_PERIOD="2024-06-12" OBS_VALUE="6.50229" BBK_DIFF_A="0.07894"/>
      <bbk:Obs TIME_PERIOD="2024-06-11" OBS_VALUE="6.42335" BBK_DIFF_A="-0.8204"/>
      <bbk:Obs TIME_PERIOD="2024-06-10" OBS_VALUE="7.24375" BBK_DIFF_A="-0.31106"/>
      <bbk:Obs TIME_PERIOD="2024-06-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-06-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-06-07" OBS_VALUE="7.55481" BBK_DIFF_A="1.34282"/>
      <bbk:Obs TIME_PERIOD="2024-06-06" OBS_VALUE="6.21199" BBK_DIFF_A="-0.04335"/>
      <bbk:Obs TIME_PERIOD="2024-06-05" OBS_VALUE="6.25534" BBK_DIFF_A="-0.01595"/>
      <bbk:Obs TIME_PERIOD="2024-06-04" OBS_VALUE="6.27129" BBK_DIFF_A="-0.54352"/>
      <bbk:Obs TIME_PERIOD="2024-06-03" OBS_VALUE="6.81481" BBK_DIFF_A="0.09858"/>
      <bbk:Obs TIME_PERIOD="2024-06-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-06-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-05-31" OBS_VALUE="6.71623" BBK_DIFF_A="0.26285"/>
      <bbk:Obs TIME_PERIOD="2024-05-30" OBS_VALUE="6.45338" BBK_DIFF_A="0.2466"/>
      <bbk:Obs TIME_PERIOD="2024-05-29" OBS_VALUE="6.20678" BBK_DIFF_A="-0.24272"/>
      <bbk:Obs TIME_PERIOD="2024-05-28" OBS_VALUE="6.4495" BBK_DIFF_A="-0.21671"/>
      <bbk:Obs TIME_PERIOD="2024-05-27" OBS_VALUE="6.66621" BBK_DIFF_A="0.00173"/>
      <bbk:Obs TIME_PERIOD="2024-05-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-05-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-05-24" OBS_VALUE="6.66448" BBK_DIFF_A="0.43825"/>
      <bbk:Obs TIME_PERIOD="2024-05-23" OBS_VALUE="6.22623" BBK_DIFF_A="0.15087"/>
      <bbk:Obs TIME_PERIOD="2024-05-22" OBS_VALUE="6.07536" BBK_DIFF_A="-0.6883"/>
      <bbk:Obs TIME_PERIOD="2024-05-21" OBS_VALUE="6.76366" BBK_DIFF_A="0.3097"/>
      <bbk:Obs TIME_PERIOD="2024-05-20" OBS_VALUE="6.45396" BBK_DIFF_A="-0.37923"/>
      <bbk:Obs TIME_PERIOD="2024-05-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-05-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-05-17" OBS_VALUE="6.83319" BBK_DIFF_A="-2.98508"/>
      <bbk:Obs TIME_PERIOD="2024-05-16" OBS_VALUE="9.81827" BBK_DIFF_A="0.54271"/>
      <bbk:Obs TIME_PERIOD="2024-05-15" OBS_VALUE="9.27556" BBK_DIFF_A="-1.5352"/>
      <bbk:Obs TIME_PERIOD="2024-05-14" OBS_VALUE="10.81076" BBK_DIFF_A="2.64274"/>
      <bbk:Obs TIME_PERIOD="2024-05-13" OBS_VALUE="8.16802" BBK_DIFF_A="-0.22085"/>
      <bbk:Obs TIME_PERIOD="2024-05-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-05-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-05-10" OBS_VALUE="8.38887" BBK_DIFF_A="-0.29061"/>
      <bbk:Obs TIME_PERIOD="2024-05-09" OBS_VALUE="8.67948" BBK_DIFF_A="2.3885"/>
      <bbk:Obs TIME_PERIOD="2024-05-08" OBS_VALUE="6.29098" BBK_DIFF_A="0.34197"/>
      <bbk:Obs TIME_PERIOD="2024-05-07" OBS_VALUE="5.94901" BBK_DIFF_A="0.96126"/>
      <bbk:Obs TIME_PERIOD="2024-05-06" OBS_VALUE="4.98775" BBK_DIFF_A="-0.30448"/>
      <bbk:Obs TIME_PERIOD="2024-05-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-05-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-05-03" OBS_VALUE="5.29223" BBK_DIFF_A="-0.25678"/>
      <bbk:Obs TIME_PERIOD="2024-05-02" OBS_VALUE="5.54901" BBK_DIFF_A="-0.00675"/>
      <bbk:Obs TIME_PERIOD="2024-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-04-30" OBS_VALUE="5.55576" BBK_DIFF_A="0.44177"/>
      <bbk:Obs TIME_PERIOD="2024-04-29" OBS_VALUE="5.11399" BBK_DIFF_A="-0.73971"/>
      <bbk:Obs TIME_PERIOD="2024-04-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-04-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-04-26" OBS_VALUE="5.8537" BBK_DIFF_A="-0.68655"/>
      <bbk:Obs TIME_PERIOD="2024-04-25" OBS_VALUE="6.54025" BBK_DIFF_A="-0.35586"/>
      <bbk:Obs TIME_PERIOD="2024-04-24" OBS_VALUE="6.89611" BBK_DIFF_A="-0.94501"/>
      <bbk:Obs TIME_PERIOD="2024-04-23" OBS_VALUE="7.84112" BBK_DIFF_A="0.67568"/>
      <bbk:Obs TIME_PERIOD="2024-04-22" OBS_VALUE="7.16544" BBK_DIFF_A="-1.07195"/>
      <bbk:Obs TIME_PERIOD="2024-04-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-04-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-04-19" OBS_VALUE="8.23739" BBK_DIFF_A="-0.09639"/>
      <bbk:Obs TIME_PERIOD="2024-04-18" OBS_VALUE="8.33378" BBK_DIFF_A="-1.37388"/>
      <bbk:Obs TIME_PERIOD="2024-04-17" OBS_VALUE="9.70766" BBK_DIFF_A="-2.55323"/>
      <bbk:Obs TIME_PERIOD="2024-04-16" OBS_VALUE="12.26089" BBK_DIFF_A="-0.18961"/>
      <bbk:Obs TIME_PERIOD="2024-04-15" OBS_VALUE="12.4505" BBK_DIFF_A="3.33888"/>
      <bbk:Obs TIME_PERIOD="2024-04-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-04-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-04-12" OBS_VALUE="9.11162" BBK_DIFF_A="2.56416"/>
      <bbk:Obs TIME_PERIOD="2024-04-11" OBS_VALUE="6.54746" BBK_DIFF_A="-4.46192"/>
      <bbk:Obs TIME_PERIOD="2024-04-10" OBS_VALUE="11.00938" BBK_DIFF_A="2.87667"/>
      <bbk:Obs TIME_PERIOD="2024-04-09" OBS_VALUE="8.13271" BBK_DIFF_A="0.20644"/>
      <bbk:Obs TIME_PERIOD="2024-04-08" OBS_VALUE="7.92627" BBK_DIFF_A="-3.64772"/>
      <bbk:Obs TIME_PERIOD="2024-04-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-04-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-04-05" OBS_VALUE="11.57399" BBK_DIFF_A="-1.40526"/>
      <bbk:Obs TIME_PERIOD="2024-04-04" OBS_VALUE="12.97925" BBK_DIFF_A="0.12286"/>
      <bbk:Obs TIME_PERIOD="2024-04-03" OBS_VALUE="12.85639" BBK_DIFF_A="-0.06952"/>
      <bbk:Obs TIME_PERIOD="2024-04-02" OBS_VALUE="12.92591" BBK_DIFF_A="2.5183"/>
      <bbk:Obs TIME_PERIOD="2024-04-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-03-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-03-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-03-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-03-28" OBS_VALUE="10.40761" BBK_DIFF_A="-1.92031"/>
      <bbk:Obs TIME_PERIOD="2024-03-27" OBS_VALUE="12.32792" BBK_DIFF_A="-0.53912"/>
      <bbk:Obs TIME_PERIOD="2024-03-26" OBS_VALUE="12.86704" BBK_DIFF_A="-0.04399"/>
      <bbk:Obs TIME_PERIOD="2024-03-25" OBS_VALUE="12.91103" BBK_DIFF_A="0.52506"/>
      <bbk:Obs TIME_PERIOD="2024-03-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-03-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-03-22" OBS_VALUE="12.38597" BBK_DIFF_A="-0.65344"/>
      <bbk:Obs TIME_PERIOD="2024-03-21" OBS_VALUE="13.03941" BBK_DIFF_A="2.14978"/>
      <bbk:Obs TIME_PERIOD="2024-03-20" OBS_VALUE="10.88963" BBK_DIFF_A="-2.21981"/>
      <bbk:Obs TIME_PERIOD="2024-03-19" OBS_VALUE="13.10944" BBK_DIFF_A="0.11197"/>
      <bbk:Obs TIME_PERIOD="2024-03-18" OBS_VALUE="12.99747" BBK_DIFF_A="-0.11572"/>
      <bbk:Obs TIME_PERIOD="2024-03-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-03-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-03-15" OBS_VALUE="13.11319" BBK_DIFF_A="-0.23969"/>
      <bbk:Obs TIME_PERIOD="2024-03-14" OBS_VALUE="13.35288" BBK_DIFF_A="-0.16306"/>
      <bbk:Obs TIME_PERIOD="2024-03-13" OBS_VALUE="13.51594" BBK_DIFF_A="0.2677"/>
      <bbk:Obs TIME_PERIOD="2024-03-12" OBS_VALUE="13.24824" BBK_DIFF_A="-0.41836"/>
      <bbk:Obs TIME_PERIOD="2024-03-11" OBS_VALUE="13.6666" BBK_DIFF_A="-0.06053"/>
      <bbk:Obs TIME_PERIOD="2024-03-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-03-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-03-08" OBS_VALUE="13.72713" BBK_DIFF_A="0.05227"/>
      <bbk:Obs TIME_PERIOD="2024-03-07" OBS_VALUE="13.67486" BBK_DIFF_A="1.52915"/>
      <bbk:Obs TIME_PERIOD="2024-03-06" OBS_VALUE="12.14571" BBK_DIFF_A="-0.98145"/>
      <bbk:Obs TIME_PERIOD="2024-03-05" OBS_VALUE="13.12716" BBK_DIFF_A="-0.42891"/>
      <bbk:Obs TIME_PERIOD="2024-03-04" OBS_VALUE="13.55607" BBK_DIFF_A="0.66716"/>
      <bbk:Obs TIME_PERIOD="2024-03-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-03-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-03-01" OBS_VALUE="12.88891" BBK_DIFF_A="2.33665"/>
      <bbk:Obs TIME_PERIOD="2024-02-29" OBS_VALUE="10.55226" BBK_DIFF_A="-2.39954"/>
      <bbk:Obs TIME_PERIOD="2024-02-28" OBS_VALUE="12.9518" BBK_DIFF_A="0.48201"/>
      <bbk:Obs TIME_PERIOD="2024-02-27" OBS_VALUE="12.46979" BBK_DIFF_A="-0.5489"/>
      <bbk:Obs TIME_PERIOD="2024-02-26" OBS_VALUE="13.01869" BBK_DIFF_A="1.00131"/>
      <bbk:Obs TIME_PERIOD="2024-02-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-02-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-02-23" OBS_VALUE="12.01738" BBK_DIFF_A="-0.75276"/>
      <bbk:Obs TIME_PERIOD="2024-02-22" OBS_VALUE="12.77014" BBK_DIFF_A="-0.4739"/>
      <bbk:Obs TIME_PERIOD="2024-02-21" OBS_VALUE="13.24404" BBK_DIFF_A="0.17275"/>
      <bbk:Obs TIME_PERIOD="2024-02-20" OBS_VALUE="13.07129" BBK_DIFF_A="-0.02"/>
      <bbk:Obs TIME_PERIOD="2024-02-19" OBS_VALUE="13.09129" BBK_DIFF_A="-0.28742"/>
      <bbk:Obs TIME_PERIOD="2024-02-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-02-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-02-16" OBS_VALUE="13.37871" BBK_DIFF_A="-0.34664"/>
      <bbk:Obs TIME_PERIOD="2024-02-15" OBS_VALUE="13.72535" BBK_DIFF_A="0.29885"/>
      <bbk:Obs TIME_PERIOD="2024-02-14" OBS_VALUE="13.4265" BBK_DIFF_A="-0.4597"/>
      <bbk:Obs TIME_PERIOD="2024-02-13" OBS_VALUE="13.8862" BBK_DIFF_A="0.03711"/>
      <bbk:Obs TIME_PERIOD="2024-02-12" OBS_VALUE="13.84909" BBK_DIFF_A="0.26956"/>
      <bbk:Obs TIME_PERIOD="2024-02-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-02-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-02-09" OBS_VALUE="13.57953" BBK_DIFF_A="-0.19164"/>
      <bbk:Obs TIME_PERIOD="2024-02-08" OBS_VALUE="13.77117" BBK_DIFF_A="0.31036"/>
      <bbk:Obs TIME_PERIOD="2024-02-07" OBS_VALUE="13.46081" BBK_DIFF_A="0.05399"/>
      <bbk:Obs TIME_PERIOD="2024-02-06" OBS_VALUE="13.40682" BBK_DIFF_A="0.17389"/>
      <bbk:Obs TIME_PERIOD="2024-02-05" OBS_VALUE="13.23293" BBK_DIFF_A="-0.07256"/>
      <bbk:Obs TIME_PERIOD="2024-02-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-02-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-02-02" OBS_VALUE="13.30549" BBK_DIFF_A="-0.30768"/>
      <bbk:Obs TIME_PERIOD="2024-02-01" OBS_VALUE="13.61317" BBK_DIFF_A="0.32919"/>
      <bbk:Obs TIME_PERIOD="2024-01-31" OBS_VALUE="13.28398" BBK_DIFF_A="-0.33178"/>
      <bbk:Obs TIME_PERIOD="2024-01-30" OBS_VALUE="13.61576" BBK_DIFF_A="0.1593"/>
      <bbk:Obs TIME_PERIOD="2024-01-29" OBS_VALUE="13.45646" BBK_DIFF_A="0.14083"/>
      <bbk:Obs TIME_PERIOD="2024-01-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-01-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-01-26" OBS_VALUE="13.31563" BBK_DIFF_A="0.32589"/>
      <bbk:Obs TIME_PERIOD="2024-01-25" OBS_VALUE="12.98974" BBK_DIFF_A="-0.02799"/>
      <bbk:Obs TIME_PERIOD="2024-01-24" OBS_VALUE="13.01773" BBK_DIFF_A="0.01668"/>
      <bbk:Obs TIME_PERIOD="2024-01-23" OBS_VALUE="13.00105" BBK_DIFF_A="-0.00928"/>
      <bbk:Obs TIME_PERIOD="2024-01-22" OBS_VALUE="13.01033" BBK_DIFF_A="0.03801"/>
      <bbk:Obs TIME_PERIOD="2024-01-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-01-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-01-19" OBS_VALUE="12.97232" BBK_DIFF_A="-0.10005"/>
      <bbk:Obs TIME_PERIOD="2024-01-18" OBS_VALUE="13.07237" BBK_DIFF_A="0.08577"/>
      <bbk:Obs TIME_PERIOD="2024-01-17" OBS_VALUE="12.9866" BBK_DIFF_A="0.07904"/>
      <bbk:Obs TIME_PERIOD="2024-01-16" OBS_VALUE="12.90756" BBK_DIFF_A="-0.06521"/>
      <bbk:Obs TIME_PERIOD="2024-01-15" OBS_VALUE="12.97277" BBK_DIFF_A="0.14237"/>
      <bbk:Obs TIME_PERIOD="2024-01-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-01-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-01-12" OBS_VALUE="12.8304" BBK_DIFF_A="0.50421"/>
      <bbk:Obs TIME_PERIOD="2024-01-11" OBS_VALUE="12.32619" BBK_DIFF_A="-0.22714"/>
      <bbk:Obs TIME_PERIOD="2024-01-10" OBS_VALUE="12.55333" BBK_DIFF_A="-0.18813"/>
      <bbk:Obs TIME_PERIOD="2024-01-09" OBS_VALUE="12.74146" BBK_DIFF_A="0.17846"/>
      <bbk:Obs TIME_PERIOD="2024-01-08" OBS_VALUE="12.563" BBK_DIFF_A="-0.02431"/>
      <bbk:Obs TIME_PERIOD="2024-01-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-01-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2024-01-05" OBS_VALUE="12.58731" BBK_DIFF_A="-0.26415"/>
      <bbk:Obs TIME_PERIOD="2024-01-04" OBS_VALUE="12.85146" BBK_DIFF_A="-0.0614"/>
      <bbk:Obs TIME_PERIOD="2024-01-03" OBS_VALUE="12.91286" BBK_DIFF_A="0.19623"/>
      <bbk:Obs TIME_PERIOD="2024-01-02" OBS_VALUE="12.71663" BBK_DIFF_A="-0.01863"/>
      <bbk:Obs TIME_PERIOD="2024-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-12-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-12-29" OBS_VALUE="12.73526" BBK_DIFF_A="-0.2785"/>
      <bbk:Obs TIME_PERIOD="2023-12-28" OBS_VALUE="13.01376" BBK_DIFF_A="0.28016"/>
      <bbk:Obs TIME_PERIOD="2023-12-27" OBS_VALUE="12.7336" BBK_DIFF_A="0.08964"/>
      <bbk:Obs TIME_PERIOD="2023-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-12-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-12-22" OBS_VALUE="12.64396" BBK_DIFF_A="0.13901"/>
      <bbk:Obs TIME_PERIOD="2023-12-21" OBS_VALUE="12.50495" BBK_DIFF_A="-0.15767"/>
      <bbk:Obs TIME_PERIOD="2023-12-20" OBS_VALUE="12.66262" BBK_DIFF_A="0.16386"/>
      <bbk:Obs TIME_PERIOD="2023-12-19" OBS_VALUE="12.49876" BBK_DIFF_A="-0.18287"/>
      <bbk:Obs TIME_PERIOD="2023-12-18" OBS_VALUE="12.68163" BBK_DIFF_A="0.29242"/>
      <bbk:Obs TIME_PERIOD="2023-12-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-12-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-12-15" OBS_VALUE="12.38921" BBK_DIFF_A="-0.13637"/>
      <bbk:Obs TIME_PERIOD="2023-12-14" OBS_VALUE="12.52558" BBK_DIFF_A="1.02245"/>
      <bbk:Obs TIME_PERIOD="2023-12-13" OBS_VALUE="11.50313" BBK_DIFF_A="1.58315"/>
      <bbk:Obs TIME_PERIOD="2023-12-12" OBS_VALUE="9.91998" BBK_DIFF_A="-0.96349"/>
      <bbk:Obs TIME_PERIOD="2023-12-11" OBS_VALUE="10.88347" BBK_DIFF_A="0.23188"/>
      <bbk:Obs TIME_PERIOD="2023-12-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-12-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-12-08" OBS_VALUE="10.65159" BBK_DIFF_A="-1.41569"/>
      <bbk:Obs TIME_PERIOD="2023-12-07" OBS_VALUE="12.06728" BBK_DIFF_A="-0.16463"/>
      <bbk:Obs TIME_PERIOD="2023-12-06" OBS_VALUE="12.23191" BBK_DIFF_A="0.18199"/>
      <bbk:Obs TIME_PERIOD="2023-12-05" OBS_VALUE="12.04992" BBK_DIFF_A="0.36149"/>
      <bbk:Obs TIME_PERIOD="2023-12-04" OBS_VALUE="11.68843" BBK_DIFF_A="3.03409"/>
      <bbk:Obs TIME_PERIOD="2023-12-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-12-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-12-01" OBS_VALUE="8.65434" BBK_DIFF_A="3.97271"/>
      <bbk:Obs TIME_PERIOD="2023-11-30" OBS_VALUE="4.68163" BBK_DIFF_A="-0.43631"/>
      <bbk:Obs TIME_PERIOD="2023-11-29" OBS_VALUE="5.11794" BBK_DIFF_A="-0.54603"/>
      <bbk:Obs TIME_PERIOD="2023-11-28" OBS_VALUE="5.66397" BBK_DIFF_A="-0.25681"/>
      <bbk:Obs TIME_PERIOD="2023-11-27" OBS_VALUE="5.92078" BBK_DIFF_A="0.10253"/>
      <bbk:Obs TIME_PERIOD="2023-11-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-11-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-11-24" OBS_VALUE="5.81825" BBK_DIFF_A="-0.0121"/>
      <bbk:Obs TIME_PERIOD="2023-11-23" OBS_VALUE="5.83035" BBK_DIFF_A="-0.23605"/>
      <bbk:Obs TIME_PERIOD="2023-11-22" OBS_VALUE="6.0664" BBK_DIFF_A="0.35103"/>
      <bbk:Obs TIME_PERIOD="2023-11-21" OBS_VALUE="5.71537" BBK_DIFF_A="-0.10087"/>
      <bbk:Obs TIME_PERIOD="2023-11-20" OBS_VALUE="5.81624" BBK_DIFF_A="0.17625"/>
      <bbk:Obs TIME_PERIOD="2023-11-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-11-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-11-17" OBS_VALUE="5.63999" BBK_DIFF_A="-0.41475"/>
      <bbk:Obs TIME_PERIOD="2023-11-16" OBS_VALUE="6.05474" BBK_DIFF_A="-7.92582"/>
      <bbk:Obs TIME_PERIOD="2023-11-15" OBS_VALUE="13.98056" BBK_DIFF_A="0.56753"/>
      <bbk:Obs TIME_PERIOD="2023-11-14" OBS_VALUE="13.41303" BBK_DIFF_A="-0.19343"/>
      <bbk:Obs TIME_PERIOD="2023-11-13" OBS_VALUE="13.60646" BBK_DIFF_A="-0.13468"/>
      <bbk:Obs TIME_PERIOD="2023-11-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-11-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-11-10" OBS_VALUE="13.74114" BBK_DIFF_A="-0.09496"/>
      <bbk:Obs TIME_PERIOD="2023-11-09" OBS_VALUE="13.8361" BBK_DIFF_A="0.48872"/>
      <bbk:Obs TIME_PERIOD="2023-11-08" OBS_VALUE="13.34738" BBK_DIFF_A="-0.48107"/>
      <bbk:Obs TIME_PERIOD="2023-11-07" OBS_VALUE="13.82845" BBK_DIFF_A="-0.32666"/>
      <bbk:Obs TIME_PERIOD="2023-11-06" OBS_VALUE="14.15511" BBK_DIFF_A="-0.07695"/>
      <bbk:Obs TIME_PERIOD="2023-11-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-11-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-11-03" OBS_VALUE="14.23206" BBK_DIFF_A="-0.25059"/>
      <bbk:Obs TIME_PERIOD="2023-11-02" OBS_VALUE="14.48265" BBK_DIFF_A="0.19115"/>
      <bbk:Obs TIME_PERIOD="2023-11-01" OBS_VALUE="14.2915" BBK_DIFF_A="0.25553"/>
      <bbk:Obs TIME_PERIOD="2023-10-31" OBS_VALUE="14.03597" BBK_DIFF_A="-0.39146"/>
      <bbk:Obs TIME_PERIOD="2023-10-30" OBS_VALUE="14.42743" BBK_DIFF_A="0.43731"/>
      <bbk:Obs TIME_PERIOD="2023-10-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-10-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-10-27" OBS_VALUE="13.99012" BBK_DIFF_A="0.41633"/>
      <bbk:Obs TIME_PERIOD="2023-10-26" OBS_VALUE="13.57379" BBK_DIFF_A="0.1707"/>
      <bbk:Obs TIME_PERIOD="2023-10-25" OBS_VALUE="13.40309" BBK_DIFF_A="0.08176"/>
      <bbk:Obs TIME_PERIOD="2023-10-24" OBS_VALUE="13.32133" BBK_DIFF_A="0.07545"/>
      <bbk:Obs TIME_PERIOD="2023-10-23" OBS_VALUE="13.24588" BBK_DIFF_A="0.07841"/>
      <bbk:Obs TIME_PERIOD="2023-10-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-10-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-10-20" OBS_VALUE="13.16747" BBK_DIFF_A="0.21165"/>
      <bbk:Obs TIME_PERIOD="2023-10-19" OBS_VALUE="12.95582" BBK_DIFF_A="-0.17208"/>
      <bbk:Obs TIME_PERIOD="2023-10-18" OBS_VALUE="13.1279" BBK_DIFF_A="-0.44668"/>
      <bbk:Obs TIME_PERIOD="2023-10-17" OBS_VALUE="13.57458" BBK_DIFF_A="-0.06604"/>
      <bbk:Obs TIME_PERIOD="2023-10-16" OBS_VALUE="13.64062" BBK_DIFF_A="0.3429"/>
      <bbk:Obs TIME_PERIOD="2023-10-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-10-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-10-13" OBS_VALUE="13.29772" BBK_DIFF_A="-0.03913"/>
      <bbk:Obs TIME_PERIOD="2023-10-12" OBS_VALUE="13.33685" BBK_DIFF_A="-0.02751"/>
      <bbk:Obs TIME_PERIOD="2023-10-11" OBS_VALUE="13.36436" BBK_DIFF_A="-0.27816"/>
      <bbk:Obs TIME_PERIOD="2023-10-10" OBS_VALUE="13.64252" BBK_DIFF_A="0.05232"/>
      <bbk:Obs TIME_PERIOD="2023-10-09" OBS_VALUE="13.5902" BBK_DIFF_A="0.14474"/>
      <bbk:Obs TIME_PERIOD="2023-10-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-10-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-10-06" OBS_VALUE="13.44546" BBK_DIFF_A="0.08265"/>
      <bbk:Obs TIME_PERIOD="2023-10-05" OBS_VALUE="13.36281" BBK_DIFF_A="0.14217"/>
      <bbk:Obs TIME_PERIOD="2023-10-04" OBS_VALUE="13.22064" BBK_DIFF_A="-0.36319"/>
      <bbk:Obs TIME_PERIOD="2023-10-03" OBS_VALUE="13.58383" BBK_DIFF_A="0.26475"/>
      <bbk:Obs TIME_PERIOD="2023-10-02" OBS_VALUE="13.31908" BBK_DIFF_A="-0.0166"/>
      <bbk:Obs TIME_PERIOD="2023-10-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-09-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-09-29" OBS_VALUE="13.33568" BBK_DIFF_A="-0.08304"/>
      <bbk:Obs TIME_PERIOD="2023-09-28" OBS_VALUE="13.41872" BBK_DIFF_A="-0.30355"/>
      <bbk:Obs TIME_PERIOD="2023-09-27" OBS_VALUE="13.72227" BBK_DIFF_A="0.14038"/>
      <bbk:Obs TIME_PERIOD="2023-09-26" OBS_VALUE="13.58189" BBK_DIFF_A="0.08062"/>
      <bbk:Obs TIME_PERIOD="2023-09-25" OBS_VALUE="13.50127" BBK_DIFF_A="0.0833"/>
      <bbk:Obs TIME_PERIOD="2023-09-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-09-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-09-22" OBS_VALUE="13.41797" BBK_DIFF_A="-0.54074"/>
      <bbk:Obs TIME_PERIOD="2023-09-21" OBS_VALUE="13.95871" BBK_DIFF_A="0.01792"/>
      <bbk:Obs TIME_PERIOD="2023-09-20" OBS_VALUE="13.94079" BBK_DIFF_A="0.59671"/>
      <bbk:Obs TIME_PERIOD="2023-09-19" OBS_VALUE="13.34408" BBK_DIFF_A="-0.0559"/>
      <bbk:Obs TIME_PERIOD="2023-09-18" OBS_VALUE="13.39998" BBK_DIFF_A="-0.00919"/>
      <bbk:Obs TIME_PERIOD="2023-09-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-09-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-09-15" OBS_VALUE="13.40917" BBK_DIFF_A="0.32173"/>
      <bbk:Obs TIME_PERIOD="2023-09-14" OBS_VALUE="13.08744" BBK_DIFF_A="-0.18347"/>
      <bbk:Obs TIME_PERIOD="2023-09-13" OBS_VALUE="13.27091" BBK_DIFF_A="0.02109"/>
      <bbk:Obs TIME_PERIOD="2023-09-12" OBS_VALUE="13.24982" BBK_DIFF_A="-0.44552"/>
      <bbk:Obs TIME_PERIOD="2023-09-11" OBS_VALUE="13.69534" BBK_DIFF_A="0.41321"/>
      <bbk:Obs TIME_PERIOD="2023-09-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-09-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-09-08" OBS_VALUE="13.28213" BBK_DIFF_A="0.0535"/>
      <bbk:Obs TIME_PERIOD="2023-09-07" OBS_VALUE="13.22863" BBK_DIFF_A="0.02495"/>
      <bbk:Obs TIME_PERIOD="2023-09-06" OBS_VALUE="13.20368" BBK_DIFF_A="-0.0451"/>
      <bbk:Obs TIME_PERIOD="2023-09-05" OBS_VALUE="13.24878" BBK_DIFF_A="0.08692"/>
      <bbk:Obs TIME_PERIOD="2023-09-04" OBS_VALUE="13.16186" BBK_DIFF_A="-0.16938"/>
      <bbk:Obs TIME_PERIOD="2023-09-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-09-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-09-01" OBS_VALUE="13.33124" BBK_DIFF_A="2.3E-4"/>
      <bbk:Obs TIME_PERIOD="2023-08-31" OBS_VALUE="13.33101" BBK_DIFF_A="-0.11935"/>
      <bbk:Obs TIME_PERIOD="2023-08-30" OBS_VALUE="13.45036" BBK_DIFF_A="0.56668"/>
      <bbk:Obs TIME_PERIOD="2023-08-29" OBS_VALUE="12.88368" BBK_DIFF_A="-0.15303"/>
      <bbk:Obs TIME_PERIOD="2023-08-28" OBS_VALUE="13.03671" BBK_DIFF_A="-0.04387"/>
      <bbk:Obs TIME_PERIOD="2023-08-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-08-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-08-25" OBS_VALUE="13.08058" BBK_DIFF_A="-0.01339"/>
      <bbk:Obs TIME_PERIOD="2023-08-24" OBS_VALUE="13.09397" BBK_DIFF_A="0.14393"/>
      <bbk:Obs TIME_PERIOD="2023-08-23" OBS_VALUE="12.95004" BBK_DIFF_A="0.24079"/>
      <bbk:Obs TIME_PERIOD="2023-08-22" OBS_VALUE="12.70925" BBK_DIFF_A="-0.33773"/>
      <bbk:Obs TIME_PERIOD="2023-08-21" OBS_VALUE="13.04698" BBK_DIFF_A="0.1521"/>
      <bbk:Obs TIME_PERIOD="2023-08-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-08-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-08-18" OBS_VALUE="12.89488" BBK_DIFF_A="7.0E-5"/>
      <bbk:Obs TIME_PERIOD="2023-08-17" OBS_VALUE="12.89481" BBK_DIFF_A="-0.0661"/>
      <bbk:Obs TIME_PERIOD="2023-08-16" OBS_VALUE="12.96091" BBK_DIFF_A="0.29339"/>
      <bbk:Obs TIME_PERIOD="2023-08-15" OBS_VALUE="12.66752" BBK_DIFF_A="-0.22495"/>
      <bbk:Obs TIME_PERIOD="2023-08-14" OBS_VALUE="12.89247" BBK_DIFF_A="-0.06212"/>
      <bbk:Obs TIME_PERIOD="2023-08-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-08-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-08-11" OBS_VALUE="12.95459" BBK_DIFF_A="0.00129"/>
      <bbk:Obs TIME_PERIOD="2023-08-10" OBS_VALUE="12.9533" BBK_DIFF_A="0.01199"/>
      <bbk:Obs TIME_PERIOD="2023-08-09" OBS_VALUE="12.94131" BBK_DIFF_A="0.10495"/>
      <bbk:Obs TIME_PERIOD="2023-08-08" OBS_VALUE="12.83636" BBK_DIFF_A="0.00963"/>
      <bbk:Obs TIME_PERIOD="2023-08-07" OBS_VALUE="12.82673" BBK_DIFF_A="0.15523"/>
      <bbk:Obs TIME_PERIOD="2023-08-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-08-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-08-04" OBS_VALUE="12.6715" BBK_DIFF_A="-0.30131"/>
      <bbk:Obs TIME_PERIOD="2023-08-03" OBS_VALUE="12.97281" BBK_DIFF_A="-0.20985"/>
      <bbk:Obs TIME_PERIOD="2023-08-02" OBS_VALUE="13.18266" BBK_DIFF_A="0.09907"/>
      <bbk:Obs TIME_PERIOD="2023-08-01" OBS_VALUE="13.08359" BBK_DIFF_A="-0.16659"/>
      <bbk:Obs TIME_PERIOD="2023-07-31" OBS_VALUE="13.25018" BBK_DIFF_A="-0.1458"/>
      <bbk:Obs TIME_PERIOD="2023-07-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-07-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-07-28" OBS_VALUE="13.39598" BBK_DIFF_A="0.04944"/>
      <bbk:Obs TIME_PERIOD="2023-07-27" OBS_VALUE="13.34654" BBK_DIFF_A="0.09664"/>
      <bbk:Obs TIME_PERIOD="2023-07-26" OBS_VALUE="13.2499" BBK_DIFF_A="-0.1236"/>
      <bbk:Obs TIME_PERIOD="2023-07-25" OBS_VALUE="13.3735" BBK_DIFF_A="-0.04763"/>
      <bbk:Obs TIME_PERIOD="2023-07-24" OBS_VALUE="13.42113" BBK_DIFF_A="0.27593"/>
      <bbk:Obs TIME_PERIOD="2023-07-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-07-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-07-21" OBS_VALUE="13.1452" BBK_DIFF_A="-0.11359"/>
      <bbk:Obs TIME_PERIOD="2023-07-20" OBS_VALUE="13.25879" BBK_DIFF_A="-0.10861"/>
      <bbk:Obs TIME_PERIOD="2023-07-19" OBS_VALUE="13.3674" BBK_DIFF_A="0.01611"/>
      <bbk:Obs TIME_PERIOD="2023-07-18" OBS_VALUE="13.35129" BBK_DIFF_A="0.113"/>
      <bbk:Obs TIME_PERIOD="2023-07-17" OBS_VALUE="13.23829" BBK_DIFF_A="11.97494"/>
      <bbk:Obs TIME_PERIOD="2023-07-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-07-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-07-14" OBS_VALUE="1.26335" BBK_DIFF_A="-0.08739"/>
      <bbk:Obs TIME_PERIOD="2023-07-13" OBS_VALUE="1.35074" BBK_DIFF_A="-0.03434"/>
      <bbk:Obs TIME_PERIOD="2023-07-12" OBS_VALUE="1.38508" BBK_DIFF_A="0.04509"/>
      <bbk:Obs TIME_PERIOD="2023-07-11" OBS_VALUE="1.33999" BBK_DIFF_A="0.058"/>
      <bbk:Obs TIME_PERIOD="2023-07-10" OBS_VALUE="1.28199" BBK_DIFF_A="0.0344"/>
      <bbk:Obs TIME_PERIOD="2023-07-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-07-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-07-07" OBS_VALUE="1.24759" BBK_DIFF_A="-0.12147"/>
      <bbk:Obs TIME_PERIOD="2023-07-06" OBS_VALUE="1.36906" BBK_DIFF_A="-0.02211"/>
      <bbk:Obs TIME_PERIOD="2023-07-05" OBS_VALUE="1.39117" BBK_DIFF_A="0.03615"/>
      <bbk:Obs TIME_PERIOD="2023-07-04" OBS_VALUE="1.35502" BBK_DIFF_A="0.02723"/>
      <bbk:Obs TIME_PERIOD="2023-07-03" OBS_VALUE="1.32779" BBK_DIFF_A="-0.00662"/>
      <bbk:Obs TIME_PERIOD="2023-07-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-07-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-06-30" OBS_VALUE="1.33441" BBK_DIFF_A="-0.02276"/>
      <bbk:Obs TIME_PERIOD="2023-06-29" OBS_VALUE="1.35717" BBK_DIFF_A="-0.07171"/>
      <bbk:Obs TIME_PERIOD="2023-06-28" OBS_VALUE="1.42888" BBK_DIFF_A="0.05956"/>
      <bbk:Obs TIME_PERIOD="2023-06-27" OBS_VALUE="1.36932" BBK_DIFF_A="0.04563"/>
      <bbk:Obs TIME_PERIOD="2023-06-26" OBS_VALUE="1.32369" BBK_DIFF_A="0.00783"/>
      <bbk:Obs TIME_PERIOD="2023-06-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-06-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-06-23" OBS_VALUE="1.31586" BBK_DIFF_A="0.07491"/>
      <bbk:Obs TIME_PERIOD="2023-06-22" OBS_VALUE="1.24095" BBK_DIFF_A="-0.0775"/>
      <bbk:Obs TIME_PERIOD="2023-06-21" OBS_VALUE="1.31845" BBK_DIFF_A="-0.092"/>
      <bbk:Obs TIME_PERIOD="2023-06-20" OBS_VALUE="1.41045" BBK_DIFF_A="-0.04886"/>
      <bbk:Obs TIME_PERIOD="2023-06-19" OBS_VALUE="1.45931" BBK_DIFF_A="-5.17797"/>
      <bbk:Obs TIME_PERIOD="2023-06-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-06-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-06-16" OBS_VALUE="6.63728" BBK_DIFF_A="0.12313"/>
      <bbk:Obs TIME_PERIOD="2023-06-15" OBS_VALUE="6.51415" BBK_DIFF_A="0.26969"/>
      <bbk:Obs TIME_PERIOD="2023-06-14" OBS_VALUE="6.24446" BBK_DIFF_A="4.86214"/>
      <bbk:Obs TIME_PERIOD="2023-06-13" OBS_VALUE="1.38232" BBK_DIFF_A="0.01128"/>
      <bbk:Obs TIME_PERIOD="2023-06-12" OBS_VALUE="1.37104" BBK_DIFF_A="0.01839"/>
      <bbk:Obs TIME_PERIOD="2023-06-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-06-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-06-09" OBS_VALUE="1.35265" BBK_DIFF_A="-0.02295"/>
      <bbk:Obs TIME_PERIOD="2023-06-08" OBS_VALUE="1.3756" BBK_DIFF_A="-0.03742"/>
      <bbk:Obs TIME_PERIOD="2023-06-07" OBS_VALUE="1.41302" BBK_DIFF_A="-0.03432"/>
      <bbk:Obs TIME_PERIOD="2023-06-06" OBS_VALUE="1.44734" BBK_DIFF_A="-0.01978"/>
      <bbk:Obs TIME_PERIOD="2023-06-05" OBS_VALUE="1.46712" BBK_DIFF_A="-6.008"/>
      <bbk:Obs TIME_PERIOD="2023-06-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-06-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-06-02" OBS_VALUE="7.47512" BBK_DIFF_A="-4.7E-4"/>
      <bbk:Obs TIME_PERIOD="2023-06-01" OBS_VALUE="7.47559" BBK_DIFF_A="-0.7456"/>
      <bbk:Obs TIME_PERIOD="2023-05-31" OBS_VALUE="8.22119" BBK_DIFF_A="6.86193"/>
      <bbk:Obs TIME_PERIOD="2023-05-30" OBS_VALUE="1.35926" BBK_DIFF_A="-5.18953"/>
      <bbk:Obs TIME_PERIOD="2023-05-29" OBS_VALUE="6.54879" BBK_DIFF_A="0.10937"/>
      <bbk:Obs TIME_PERIOD="2023-05-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-05-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-05-26" OBS_VALUE="6.43942" BBK_DIFF_A="-0.15717"/>
      <bbk:Obs TIME_PERIOD="2023-05-25" OBS_VALUE="6.59659" BBK_DIFF_A="0.10959"/>
      <bbk:Obs TIME_PERIOD="2023-05-24" OBS_VALUE="6.487" BBK_DIFF_A="-0.07315"/>
      <bbk:Obs TIME_PERIOD="2023-05-23" OBS_VALUE="6.56015" BBK_DIFF_A="0.18683"/>
      <bbk:Obs TIME_PERIOD="2023-05-22" OBS_VALUE="6.37332" BBK_DIFF_A="-1.16481"/>
      <bbk:Obs TIME_PERIOD="2023-05-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-05-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-05-19" OBS_VALUE="7.53813" BBK_DIFF_A="0.02541"/>
      <bbk:Obs TIME_PERIOD="2023-05-18" OBS_VALUE="7.51272" BBK_DIFF_A="0.31821"/>
      <bbk:Obs TIME_PERIOD="2023-05-17" OBS_VALUE="7.19451" BBK_DIFF_A="0.17085"/>
      <bbk:Obs TIME_PERIOD="2023-05-16" OBS_VALUE="7.02366" BBK_DIFF_A="0.19696"/>
      <bbk:Obs TIME_PERIOD="2023-05-15" OBS_VALUE="6.8267" BBK_DIFF_A="5.6422"/>
      <bbk:Obs TIME_PERIOD="2023-05-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-05-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-05-12" OBS_VALUE="1.1845" BBK_DIFF_A="0.23654"/>
      <bbk:Obs TIME_PERIOD="2023-05-11" OBS_VALUE="0.94796" BBK_DIFF_A="-5.10187"/>
      <bbk:Obs TIME_PERIOD="2023-05-10" OBS_VALUE="6.04983" BBK_DIFF_A="-0.13173"/>
      <bbk:Obs TIME_PERIOD="2023-05-09" OBS_VALUE="6.18156" BBK_DIFF_A="-1.22523"/>
      <bbk:Obs TIME_PERIOD="2023-05-08" OBS_VALUE="7.40679" BBK_DIFF_A="0.26951"/>
      <bbk:Obs TIME_PERIOD="2023-05-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-05-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-05-05" OBS_VALUE="7.13728" BBK_DIFF_A="5.95515"/>
      <bbk:Obs TIME_PERIOD="2023-05-04" OBS_VALUE="1.18213" BBK_DIFF_A="0.09205"/>
      <bbk:Obs TIME_PERIOD="2023-05-03" OBS_VALUE="1.09008" BBK_DIFF_A="-0.06256"/>
      <bbk:Obs TIME_PERIOD="2023-05-02" OBS_VALUE="1.15264" BBK_DIFF_A="0.00519"/>
      <bbk:Obs TIME_PERIOD="2023-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-04-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-04-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-04-28" OBS_VALUE="1.14745" BBK_DIFF_A="0.01687"/>
      <bbk:Obs TIME_PERIOD="2023-04-27" OBS_VALUE="1.13058" BBK_DIFF_A="0.04713"/>
      <bbk:Obs TIME_PERIOD="2023-04-26" OBS_VALUE="1.08345" BBK_DIFF_A="-0.00769"/>
      <bbk:Obs TIME_PERIOD="2023-04-25" OBS_VALUE="1.09114" BBK_DIFF_A="0.10542"/>
      <bbk:Obs TIME_PERIOD="2023-04-24" OBS_VALUE="0.98572" BBK_DIFF_A="0.16524"/>
      <bbk:Obs TIME_PERIOD="2023-04-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-04-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-04-21" OBS_VALUE="0.82048" BBK_DIFF_A="-0.02426"/>
      <bbk:Obs TIME_PERIOD="2023-04-20" OBS_VALUE="0.84474" BBK_DIFF_A="-0.08971"/>
      <bbk:Obs TIME_PERIOD="2023-04-19" OBS_VALUE="0.93445" BBK_DIFF_A="0.03129"/>
      <bbk:Obs TIME_PERIOD="2023-04-18" OBS_VALUE="0.90316" BBK_DIFF_A="-0.02427"/>
      <bbk:Obs TIME_PERIOD="2023-04-17" OBS_VALUE="0.92743" BBK_DIFF_A="-5.84787"/>
      <bbk:Obs TIME_PERIOD="2023-04-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-04-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-04-14" OBS_VALUE="6.7753" BBK_DIFF_A="-0.05552"/>
      <bbk:Obs TIME_PERIOD="2023-04-13" OBS_VALUE="6.83082" BBK_DIFF_A="0.01436"/>
      <bbk:Obs TIME_PERIOD="2023-04-12" OBS_VALUE="6.81646" BBK_DIFF_A="0.02796"/>
      <bbk:Obs TIME_PERIOD="2023-04-11" OBS_VALUE="6.7885" BBK_DIFF_A="0.4519"/>
      <bbk:Obs TIME_PERIOD="2023-04-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-04-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-04-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-04-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-04-06" OBS_VALUE="6.3366" BBK_DIFF_A="-0.42216"/>
      <bbk:Obs TIME_PERIOD="2023-04-05" OBS_VALUE="6.75876" BBK_DIFF_A="-0.26271"/>
      <bbk:Obs TIME_PERIOD="2023-04-04" OBS_VALUE="7.02147" BBK_DIFF_A="-0.16299"/>
      <bbk:Obs TIME_PERIOD="2023-04-03" OBS_VALUE="7.18446" BBK_DIFF_A="-0.14342"/>
      <bbk:Obs TIME_PERIOD="2023-04-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-04-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-03-31" OBS_VALUE="7.32788" BBK_DIFF_A="0.33717"/>
      <bbk:Obs TIME_PERIOD="2023-03-30" OBS_VALUE="6.99071" BBK_DIFF_A="0.41843"/>
      <bbk:Obs TIME_PERIOD="2023-03-29" OBS_VALUE="6.57228" BBK_DIFF_A="-0.13178"/>
      <bbk:Obs TIME_PERIOD="2023-03-28" OBS_VALUE="6.70406" BBK_DIFF_A="0.30904"/>
      <bbk:Obs TIME_PERIOD="2023-03-27" OBS_VALUE="6.39502" BBK_DIFF_A="1.19603"/>
      <bbk:Obs TIME_PERIOD="2023-03-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-03-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-03-24" OBS_VALUE="5.19899" BBK_DIFF_A="-1.6108"/>
      <bbk:Obs TIME_PERIOD="2023-03-23" OBS_VALUE="6.80979" BBK_DIFF_A="-0.28294"/>
      <bbk:Obs TIME_PERIOD="2023-03-22" OBS_VALUE="7.09273" BBK_DIFF_A="0.08484"/>
      <bbk:Obs TIME_PERIOD="2023-03-21" OBS_VALUE="7.00789" BBK_DIFF_A="1.13904"/>
      <bbk:Obs TIME_PERIOD="2023-03-20" OBS_VALUE="5.86885" BBK_DIFF_A="-6.51124"/>
      <bbk:Obs TIME_PERIOD="2023-03-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-03-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-03-17" OBS_VALUE="12.38009" BBK_DIFF_A="0.24137"/>
      <bbk:Obs TIME_PERIOD="2023-03-16" OBS_VALUE="12.13872" BBK_DIFF_A="0.64785"/>
      <bbk:Obs TIME_PERIOD="2023-03-15" OBS_VALUE="11.49087" BBK_DIFF_A="-0.41456"/>
      <bbk:Obs TIME_PERIOD="2023-03-14" OBS_VALUE="11.90543" BBK_DIFF_A="-0.35013"/>
      <bbk:Obs TIME_PERIOD="2023-03-13" OBS_VALUE="12.25556" BBK_DIFF_A="0.23958"/>
      <bbk:Obs TIME_PERIOD="2023-03-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-03-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-03-10" OBS_VALUE="12.01598" BBK_DIFF_A="0.2462"/>
      <bbk:Obs TIME_PERIOD="2023-03-09" OBS_VALUE="11.76978" BBK_DIFF_A="-0.0686"/>
      <bbk:Obs TIME_PERIOD="2023-03-08" OBS_VALUE="11.83838" BBK_DIFF_A="0.12236"/>
      <bbk:Obs TIME_PERIOD="2023-03-07" OBS_VALUE="11.71602" BBK_DIFF_A="0.30517"/>
      <bbk:Obs TIME_PERIOD="2023-03-06" OBS_VALUE="11.41085" BBK_DIFF_A="-0.26546"/>
      <bbk:Obs TIME_PERIOD="2023-03-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-03-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-03-03" OBS_VALUE="11.67631" BBK_DIFF_A="0.50569"/>
      <bbk:Obs TIME_PERIOD="2023-03-02" OBS_VALUE="11.17062" BBK_DIFF_A="-0.40167"/>
      <bbk:Obs TIME_PERIOD="2023-03-01" OBS_VALUE="11.57229" BBK_DIFF_A="-0.0621"/>
      <bbk:Obs TIME_PERIOD="2023-02-28" OBS_VALUE="11.63439" BBK_DIFF_A="0.24889"/>
      <bbk:Obs TIME_PERIOD="2023-02-27" OBS_VALUE="11.3855" BBK_DIFF_A="0.01457"/>
      <bbk:Obs TIME_PERIOD="2023-02-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-02-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-02-24" OBS_VALUE="11.37093" BBK_DIFF_A="-0.16799"/>
      <bbk:Obs TIME_PERIOD="2023-02-23" OBS_VALUE="11.53892" BBK_DIFF_A="0.27891"/>
      <bbk:Obs TIME_PERIOD="2023-02-22" OBS_VALUE="11.26001" BBK_DIFF_A="-0.12717"/>
      <bbk:Obs TIME_PERIOD="2023-02-21" OBS_VALUE="11.38718" BBK_DIFF_A="-0.27375"/>
      <bbk:Obs TIME_PERIOD="2023-02-20" OBS_VALUE="11.66093" BBK_DIFF_A="0.37894"/>
      <bbk:Obs TIME_PERIOD="2023-02-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-02-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-02-17" OBS_VALUE="11.28199" BBK_DIFF_A="-0.35698"/>
      <bbk:Obs TIME_PERIOD="2023-02-16" OBS_VALUE="11.63897" BBK_DIFF_A="0.34585"/>
      <bbk:Obs TIME_PERIOD="2023-02-15" OBS_VALUE="11.29312" BBK_DIFF_A="-0.07178"/>
      <bbk:Obs TIME_PERIOD="2023-02-14" OBS_VALUE="11.3649" BBK_DIFF_A="-0.12755"/>
      <bbk:Obs TIME_PERIOD="2023-02-13" OBS_VALUE="11.49245" BBK_DIFF_A="-0.07734"/>
      <bbk:Obs TIME_PERIOD="2023-02-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-02-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-02-10" OBS_VALUE="11.56979" BBK_DIFF_A="-0.1091"/>
      <bbk:Obs TIME_PERIOD="2023-02-09" OBS_VALUE="11.67889" BBK_DIFF_A="0.13138"/>
      <bbk:Obs TIME_PERIOD="2023-02-08" OBS_VALUE="11.54751" BBK_DIFF_A="-0.23336"/>
      <bbk:Obs TIME_PERIOD="2023-02-07" OBS_VALUE="11.78087" BBK_DIFF_A="-0.24306"/>
      <bbk:Obs TIME_PERIOD="2023-02-06" OBS_VALUE="12.02393" BBK_DIFF_A="-0.33362"/>
      <bbk:Obs TIME_PERIOD="2023-02-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-02-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-02-03" OBS_VALUE="12.35755" BBK_DIFF_A="0.65653"/>
      <bbk:Obs TIME_PERIOD="2023-02-02" OBS_VALUE="11.70102" BBK_DIFF_A="0.14644"/>
      <bbk:Obs TIME_PERIOD="2023-02-01" OBS_VALUE="11.55458" BBK_DIFF_A="0.24614"/>
      <bbk:Obs TIME_PERIOD="2023-01-31" OBS_VALUE="11.30844" BBK_DIFF_A="0.0683"/>
      <bbk:Obs TIME_PERIOD="2023-01-30" OBS_VALUE="11.24014" BBK_DIFF_A="-0.14195"/>
      <bbk:Obs TIME_PERIOD="2023-01-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-01-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-01-27" OBS_VALUE="11.38209" BBK_DIFF_A="-0.23693"/>
      <bbk:Obs TIME_PERIOD="2023-01-26" OBS_VALUE="11.61902" BBK_DIFF_A="-0.0246"/>
      <bbk:Obs TIME_PERIOD="2023-01-25" OBS_VALUE="11.64362" BBK_DIFF_A="-0.19289"/>
      <bbk:Obs TIME_PERIOD="2023-01-24" OBS_VALUE="11.83651" BBK_DIFF_A="-0.0747"/>
      <bbk:Obs TIME_PERIOD="2023-01-23" OBS_VALUE="11.91121" BBK_DIFF_A="0.42723"/>
      <bbk:Obs TIME_PERIOD="2023-01-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-01-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-01-20" OBS_VALUE="11.48398" BBK_DIFF_A="0.02657"/>
      <bbk:Obs TIME_PERIOD="2023-01-19" OBS_VALUE="11.45741" BBK_DIFF_A="-0.06053"/>
      <bbk:Obs TIME_PERIOD="2023-01-18" OBS_VALUE="11.51794" BBK_DIFF_A="0.27689"/>
      <bbk:Obs TIME_PERIOD="2023-01-17" OBS_VALUE="11.24105" BBK_DIFF_A="-0.1044"/>
      <bbk:Obs TIME_PERIOD="2023-01-16" OBS_VALUE="11.34545" BBK_DIFF_A="-0.04439"/>
      <bbk:Obs TIME_PERIOD="2023-01-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-01-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-01-13" OBS_VALUE="11.38984" BBK_DIFF_A="0.21678"/>
      <bbk:Obs TIME_PERIOD="2023-01-12" OBS_VALUE="11.17306" BBK_DIFF_A="0.65485"/>
      <bbk:Obs TIME_PERIOD="2023-01-11" OBS_VALUE="10.51821" BBK_DIFF_A="-0.19287"/>
      <bbk:Obs TIME_PERIOD="2023-01-10" OBS_VALUE="10.71108" BBK_DIFF_A="0.29532"/>
      <bbk:Obs TIME_PERIOD="2023-01-09" OBS_VALUE="10.41576" BBK_DIFF_A="0.34517"/>
      <bbk:Obs TIME_PERIOD="2023-01-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-01-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2023-01-06" OBS_VALUE="10.07059" BBK_DIFF_A="-0.30387"/>
      <bbk:Obs TIME_PERIOD="2023-01-05" OBS_VALUE="10.37446" BBK_DIFF_A="0.22729"/>
      <bbk:Obs TIME_PERIOD="2023-01-04" OBS_VALUE="10.14717" BBK_DIFF_A="0.14818"/>
      <bbk:Obs TIME_PERIOD="2023-01-03" OBS_VALUE="9.99899" BBK_DIFF_A="-0.96146"/>
      <bbk:Obs TIME_PERIOD="2023-01-02" OBS_VALUE="10.96045" BBK_DIFF_A="0.34702"/>
      <bbk:Obs TIME_PERIOD="2023-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-12-30" OBS_VALUE="10.61343" BBK_DIFF_A="-0.03599"/>
      <bbk:Obs TIME_PERIOD="2022-12-29" OBS_VALUE="10.64942" BBK_DIFF_A="0.45782"/>
      <bbk:Obs TIME_PERIOD="2022-12-28" OBS_VALUE="10.1916" BBK_DIFF_A="-0.27638"/>
      <bbk:Obs TIME_PERIOD="2022-12-27" OBS_VALUE="10.46798" BBK_DIFF_A="0.10348"/>
      <bbk:Obs TIME_PERIOD="2022-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-12-23" OBS_VALUE="10.3645" BBK_DIFF_A="-0.02512"/>
      <bbk:Obs TIME_PERIOD="2022-12-22" OBS_VALUE="10.38962" BBK_DIFF_A="0.14907"/>
      <bbk:Obs TIME_PERIOD="2022-12-21" OBS_VALUE="10.24055" BBK_DIFF_A="0.21175"/>
      <bbk:Obs TIME_PERIOD="2022-12-20" OBS_VALUE="10.0288" BBK_DIFF_A="0.75638"/>
      <bbk:Obs TIME_PERIOD="2022-12-19" OBS_VALUE="9.27242" BBK_DIFF_A="0.57359"/>
      <bbk:Obs TIME_PERIOD="2022-12-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-12-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-12-16" OBS_VALUE="8.69883" BBK_DIFF_A="-1.57075"/>
      <bbk:Obs TIME_PERIOD="2022-12-15" OBS_VALUE="10.26958" BBK_DIFF_A="0.75106"/>
      <bbk:Obs TIME_PERIOD="2022-12-14" OBS_VALUE="9.51852" BBK_DIFF_A="0.37788"/>
      <bbk:Obs TIME_PERIOD="2022-12-13" OBS_VALUE="9.14064" BBK_DIFF_A="-0.23637"/>
      <bbk:Obs TIME_PERIOD="2022-12-12" OBS_VALUE="9.37701" BBK_DIFF_A="-0.05206"/>
      <bbk:Obs TIME_PERIOD="2022-12-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-12-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-12-09" OBS_VALUE="9.42907" BBK_DIFF_A="-0.17747"/>
      <bbk:Obs TIME_PERIOD="2022-12-08" OBS_VALUE="9.60654" BBK_DIFF_A="0.03297"/>
      <bbk:Obs TIME_PERIOD="2022-12-07" OBS_VALUE="9.57357" BBK_DIFF_A="0.17595"/>
      <bbk:Obs TIME_PERIOD="2022-12-06" OBS_VALUE="9.39762" BBK_DIFF_A="0.048"/>
      <bbk:Obs TIME_PERIOD="2022-12-05" OBS_VALUE="9.34962" BBK_DIFF_A="-0.66002"/>
      <bbk:Obs TIME_PERIOD="2022-12-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-12-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-12-02" OBS_VALUE="10.00964" BBK_DIFF_A="0.65136"/>
      <bbk:Obs TIME_PERIOD="2022-12-01" OBS_VALUE="9.35828" BBK_DIFF_A="-0.15758"/>
      <bbk:Obs TIME_PERIOD="2022-11-30" OBS_VALUE="9.51586" BBK_DIFF_A="-0.05068"/>
      <bbk:Obs TIME_PERIOD="2022-11-29" OBS_VALUE="9.56654" BBK_DIFF_A="0.38009"/>
      <bbk:Obs TIME_PERIOD="2022-11-28" OBS_VALUE="9.18645" BBK_DIFF_A="-0.3367"/>
      <bbk:Obs TIME_PERIOD="2022-11-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-11-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-11-25" OBS_VALUE="9.52315" BBK_DIFF_A="-0.39085"/>
      <bbk:Obs TIME_PERIOD="2022-11-24" OBS_VALUE="9.914" BBK_DIFF_A="-0.1654"/>
      <bbk:Obs TIME_PERIOD="2022-11-23" OBS_VALUE="10.0794" BBK_DIFF_A="0.09886"/>
      <bbk:Obs TIME_PERIOD="2022-11-22" OBS_VALUE="9.98054" BBK_DIFF_A="0.15251"/>
      <bbk:Obs TIME_PERIOD="2022-11-21" OBS_VALUE="9.82803" BBK_DIFF_A="0.11324"/>
      <bbk:Obs TIME_PERIOD="2022-11-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-11-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-11-18" OBS_VALUE="9.71479" BBK_DIFF_A="-0.72504"/>
      <bbk:Obs TIME_PERIOD="2022-11-17" OBS_VALUE="10.43983" BBK_DIFF_A="0.31304"/>
      <bbk:Obs TIME_PERIOD="2022-11-16" OBS_VALUE="10.12679" BBK_DIFF_A="-0.11411"/>
      <bbk:Obs TIME_PERIOD="2022-11-15" OBS_VALUE="10.2409" BBK_DIFF_A="0.02281"/>
      <bbk:Obs TIME_PERIOD="2022-11-14" OBS_VALUE="10.21809" BBK_DIFF_A="-0.16912"/>
      <bbk:Obs TIME_PERIOD="2022-11-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-11-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-11-11" OBS_VALUE="10.38721" BBK_DIFF_A="1.57117"/>
      <bbk:Obs TIME_PERIOD="2022-11-10" OBS_VALUE="8.81604" BBK_DIFF_A="0.12978"/>
      <bbk:Obs TIME_PERIOD="2022-11-09" OBS_VALUE="8.68626" BBK_DIFF_A="0.02132"/>
      <bbk:Obs TIME_PERIOD="2022-11-08" OBS_VALUE="8.66494" BBK_DIFF_A="-0.92474"/>
      <bbk:Obs TIME_PERIOD="2022-11-07" OBS_VALUE="9.58968" BBK_DIFF_A="0.13834"/>
      <bbk:Obs TIME_PERIOD="2022-11-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-11-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-11-04" OBS_VALUE="9.45134" BBK_DIFF_A="-0.17725"/>
      <bbk:Obs TIME_PERIOD="2022-11-03" OBS_VALUE="9.62859" BBK_DIFF_A="-0.98402"/>
      <bbk:Obs TIME_PERIOD="2022-11-02" OBS_VALUE="10.61261" BBK_DIFF_A="-0.00936"/>
      <bbk:Obs TIME_PERIOD="2022-11-01" OBS_VALUE="10.62197" BBK_DIFF_A="0.50338"/>
      <bbk:Obs TIME_PERIOD="2022-10-31" OBS_VALUE="10.11859" BBK_DIFF_A="-1.36298"/>
      <bbk:Obs TIME_PERIOD="2022-10-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-10-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-10-28" OBS_VALUE="11.48157" BBK_DIFF_A="1.10104"/>
      <bbk:Obs TIME_PERIOD="2022-10-27" OBS_VALUE="10.38053" BBK_DIFF_A="0.13537"/>
      <bbk:Obs TIME_PERIOD="2022-10-26" OBS_VALUE="10.24516" BBK_DIFF_A="-0.22871"/>
      <bbk:Obs TIME_PERIOD="2022-10-25" OBS_VALUE="10.47387" BBK_DIFF_A="-0.01416"/>
      <bbk:Obs TIME_PERIOD="2022-10-24" OBS_VALUE="10.48803" BBK_DIFF_A="0.10511"/>
      <bbk:Obs TIME_PERIOD="2022-10-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-10-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-10-21" OBS_VALUE="10.38292" BBK_DIFF_A="0.38622"/>
      <bbk:Obs TIME_PERIOD="2022-10-20" OBS_VALUE="9.9967" BBK_DIFF_A="-0.17205"/>
      <bbk:Obs TIME_PERIOD="2022-10-19" OBS_VALUE="10.16875" BBK_DIFF_A="-0.55638"/>
      <bbk:Obs TIME_PERIOD="2022-10-18" OBS_VALUE="10.72513" BBK_DIFF_A="-0.31074"/>
      <bbk:Obs TIME_PERIOD="2022-10-17" OBS_VALUE="11.03587" BBK_DIFF_A="0.56654"/>
      <bbk:Obs TIME_PERIOD="2022-10-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-10-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-10-14" OBS_VALUE="10.46933" BBK_DIFF_A="0.31454"/>
      <bbk:Obs TIME_PERIOD="2022-10-13" OBS_VALUE="10.15479" BBK_DIFF_A="-0.01489"/>
      <bbk:Obs TIME_PERIOD="2022-10-12" OBS_VALUE="10.16968" BBK_DIFF_A="0.52552"/>
      <bbk:Obs TIME_PERIOD="2022-10-11" OBS_VALUE="9.64416" BBK_DIFF_A="0.11788"/>
      <bbk:Obs TIME_PERIOD="2022-10-10" OBS_VALUE="9.52628" BBK_DIFF_A="0.85305"/>
      <bbk:Obs TIME_PERIOD="2022-10-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-10-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-10-07" OBS_VALUE="8.67323" BBK_DIFF_A="-0.58295"/>
      <bbk:Obs TIME_PERIOD="2022-10-06" OBS_VALUE="9.25618" BBK_DIFF_A="-0.87769"/>
      <bbk:Obs TIME_PERIOD="2022-10-05" OBS_VALUE="10.13387" BBK_DIFF_A="-0.3516"/>
      <bbk:Obs TIME_PERIOD="2022-10-04" OBS_VALUE="10.48547" BBK_DIFF_A="1.35056"/>
      <bbk:Obs TIME_PERIOD="2022-10-03" OBS_VALUE="9.13491" BBK_DIFF_A="0.20601"/>
      <bbk:Obs TIME_PERIOD="2022-10-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-10-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-09-30" OBS_VALUE="8.9289" BBK_DIFF_A="1.75908"/>
      <bbk:Obs TIME_PERIOD="2022-09-29" OBS_VALUE="7.16982" BBK_DIFF_A="0.23977"/>
      <bbk:Obs TIME_PERIOD="2022-09-28" OBS_VALUE="6.93005" BBK_DIFF_A="0.81534"/>
      <bbk:Obs TIME_PERIOD="2022-09-27" OBS_VALUE="6.11471" BBK_DIFF_A="-0.15721"/>
      <bbk:Obs TIME_PERIOD="2022-09-26" OBS_VALUE="6.27192" BBK_DIFF_A="-0.14521"/>
      <bbk:Obs TIME_PERIOD="2022-09-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-09-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-09-23" OBS_VALUE="6.41713" BBK_DIFF_A="6.17808"/>
      <bbk:Obs TIME_PERIOD="2022-09-22" OBS_VALUE="0.23905" BBK_DIFF_A="-1.3424"/>
      <bbk:Obs TIME_PERIOD="2022-09-21" OBS_VALUE="1.58145" BBK_DIFF_A="0.54005"/>
      <bbk:Obs TIME_PERIOD="2022-09-20" OBS_VALUE="1.0414" BBK_DIFF_A="-0.00238"/>
      <bbk:Obs TIME_PERIOD="2022-09-19" OBS_VALUE="1.04378" BBK_DIFF_A="-0.08904"/>
      <bbk:Obs TIME_PERIOD="2022-09-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-09-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-09-16" OBS_VALUE="1.13282" BBK_DIFF_A="-0.05112"/>
      <bbk:Obs TIME_PERIOD="2022-09-15" OBS_VALUE="1.18394" BBK_DIFF_A="-0.06364"/>
      <bbk:Obs TIME_PERIOD="2022-09-14" OBS_VALUE="1.24758" BBK_DIFF_A="0.19245"/>
      <bbk:Obs TIME_PERIOD="2022-09-13" OBS_VALUE="1.05513" BBK_DIFF_A="0.03408"/>
      <bbk:Obs TIME_PERIOD="2022-09-12" OBS_VALUE="1.02105" BBK_DIFF_A="-0.08913"/>
      <bbk:Obs TIME_PERIOD="2022-09-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-09-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-09-09" OBS_VALUE="1.11018" BBK_DIFF_A="-0.18005"/>
      <bbk:Obs TIME_PERIOD="2022-09-08" OBS_VALUE="1.29023" BBK_DIFF_A="-0.02257"/>
      <bbk:Obs TIME_PERIOD="2022-09-07" OBS_VALUE="1.3128" BBK_DIFF_A="-0.1057"/>
      <bbk:Obs TIME_PERIOD="2022-09-06" OBS_VALUE="1.4185" BBK_DIFF_A="0.23527"/>
      <bbk:Obs TIME_PERIOD="2022-09-05" OBS_VALUE="1.18323" BBK_DIFF_A="0.02239"/>
      <bbk:Obs TIME_PERIOD="2022-09-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-09-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-09-02" OBS_VALUE="1.16084" BBK_DIFF_A="0.04012"/>
      <bbk:Obs TIME_PERIOD="2022-09-01" OBS_VALUE="1.12072" BBK_DIFF_A="0.02969"/>
      <bbk:Obs TIME_PERIOD="2022-08-31" OBS_VALUE="1.09103" BBK_DIFF_A="0.01549"/>
      <bbk:Obs TIME_PERIOD="2022-08-30" OBS_VALUE="1.07554" BBK_DIFF_A="-0.01571"/>
      <bbk:Obs TIME_PERIOD="2022-08-29" OBS_VALUE="1.09125" BBK_DIFF_A="0.09542"/>
      <bbk:Obs TIME_PERIOD="2022-08-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-08-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-08-26" OBS_VALUE="0.99583" BBK_DIFF_A="0.02039"/>
      <bbk:Obs TIME_PERIOD="2022-08-25" OBS_VALUE="0.97544" BBK_DIFF_A="-0.00408"/>
      <bbk:Obs TIME_PERIOD="2022-08-24" OBS_VALUE="0.97952" BBK_DIFF_A="-0.11175"/>
      <bbk:Obs TIME_PERIOD="2022-08-23" OBS_VALUE="1.09127" BBK_DIFF_A="0.11406"/>
      <bbk:Obs TIME_PERIOD="2022-08-22" OBS_VALUE="0.97721" BBK_DIFF_A="0.03703"/>
      <bbk:Obs TIME_PERIOD="2022-08-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-08-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-08-19" OBS_VALUE="0.94018" BBK_DIFF_A="-0.10654"/>
      <bbk:Obs TIME_PERIOD="2022-08-18" OBS_VALUE="1.04672" BBK_DIFF_A="0.10775"/>
      <bbk:Obs TIME_PERIOD="2022-08-17" OBS_VALUE="0.93897" BBK_DIFF_A="0.20445"/>
      <bbk:Obs TIME_PERIOD="2022-08-16" OBS_VALUE="0.73452" BBK_DIFF_A="-0.02294"/>
      <bbk:Obs TIME_PERIOD="2022-08-15" OBS_VALUE="0.75746" BBK_DIFF_A="0.14482"/>
      <bbk:Obs TIME_PERIOD="2022-08-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-08-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-08-12" OBS_VALUE="0.61264" BBK_DIFF_A="0.01409"/>
      <bbk:Obs TIME_PERIOD="2022-08-11" OBS_VALUE="0.59855" BBK_DIFF_A="0.03272"/>
      <bbk:Obs TIME_PERIOD="2022-08-10" OBS_VALUE="0.56583" BBK_DIFF_A="-0.01412"/>
      <bbk:Obs TIME_PERIOD="2022-08-09" OBS_VALUE="0.57995" BBK_DIFF_A="0.05702"/>
      <bbk:Obs TIME_PERIOD="2022-08-08" OBS_VALUE="0.52293" BBK_DIFF_A="0.0781"/>
      <bbk:Obs TIME_PERIOD="2022-08-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-08-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-08-05" OBS_VALUE="0.44483" BBK_DIFF_A="-0.02866"/>
      <bbk:Obs TIME_PERIOD="2022-08-04" OBS_VALUE="0.47349" BBK_DIFF_A="0.00612"/>
      <bbk:Obs TIME_PERIOD="2022-08-03" OBS_VALUE="0.46737" BBK_DIFF_A="0.15366"/>
      <bbk:Obs TIME_PERIOD="2022-08-02" OBS_VALUE="0.31371" BBK_DIFF_A="-0.02563"/>
      <bbk:Obs TIME_PERIOD="2022-08-01" OBS_VALUE="0.33934" BBK_DIFF_A="0.00521"/>
      <bbk:Obs TIME_PERIOD="2022-07-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-07-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-07-29" OBS_VALUE="0.33413" BBK_DIFF_A="-0.17868"/>
      <bbk:Obs TIME_PERIOD="2022-07-28" OBS_VALUE="0.51281" BBK_DIFF_A="-0.05656"/>
      <bbk:Obs TIME_PERIOD="2022-07-27" OBS_VALUE="0.56937" BBK_DIFF_A="-0.23017"/>
      <bbk:Obs TIME_PERIOD="2022-07-26" OBS_VALUE="0.79954" BBK_DIFF_A="-0.19877"/>
      <bbk:Obs TIME_PERIOD="2022-07-25" OBS_VALUE="0.99831" BBK_DIFF_A="-0.35585"/>
      <bbk:Obs TIME_PERIOD="2022-07-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-07-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-07-22" OBS_VALUE="1.35416" BBK_DIFF_A="-0.1189"/>
      <bbk:Obs TIME_PERIOD="2022-07-21" OBS_VALUE="1.47306" BBK_DIFF_A="0.01939"/>
      <bbk:Obs TIME_PERIOD="2022-07-20" OBS_VALUE="1.45367" BBK_DIFF_A="0.11816"/>
      <bbk:Obs TIME_PERIOD="2022-07-19" OBS_VALUE="1.33551" BBK_DIFF_A="-0.09718"/>
      <bbk:Obs TIME_PERIOD="2022-07-18" OBS_VALUE="1.43269" BBK_DIFF_A="0.20171"/>
      <bbk:Obs TIME_PERIOD="2022-07-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-07-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-07-15" OBS_VALUE="1.23098" BBK_DIFF_A="-0.02009"/>
      <bbk:Obs TIME_PERIOD="2022-07-14" OBS_VALUE="1.25107" BBK_DIFF_A="-0.20282"/>
      <bbk:Obs TIME_PERIOD="2022-07-13" OBS_VALUE="1.45389" BBK_DIFF_A="-11.55136"/>
      <bbk:Obs TIME_PERIOD="2022-07-12" OBS_VALUE="13.00525" BBK_DIFF_A="0.06446"/>
      <bbk:Obs TIME_PERIOD="2022-07-11" OBS_VALUE="12.94079" BBK_DIFF_A="-0.21782"/>
      <bbk:Obs TIME_PERIOD="2022-07-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-07-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-07-08" OBS_VALUE="13.15861" BBK_DIFF_A="-0.57712"/>
      <bbk:Obs TIME_PERIOD="2022-07-07" OBS_VALUE="13.73573" BBK_DIFF_A="0.90374"/>
      <bbk:Obs TIME_PERIOD="2022-07-06" OBS_VALUE="12.83199" BBK_DIFF_A="0.489"/>
      <bbk:Obs TIME_PERIOD="2022-07-05" OBS_VALUE="12.34299" BBK_DIFF_A="-1.27073"/>
      <bbk:Obs TIME_PERIOD="2022-07-04" OBS_VALUE="13.61372" BBK_DIFF_A="0.82614"/>
      <bbk:Obs TIME_PERIOD="2022-07-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-07-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-07-01" OBS_VALUE="12.78758" BBK_DIFF_A="0.64231"/>
      <bbk:Obs TIME_PERIOD="2022-06-30" OBS_VALUE="12.14527" BBK_DIFF_A="0.17562"/>
      <bbk:Obs TIME_PERIOD="2022-06-29" OBS_VALUE="11.96965" BBK_DIFF_A="-0.14548"/>
      <bbk:Obs TIME_PERIOD="2022-06-28" OBS_VALUE="12.11513" BBK_DIFF_A="-0.66958"/>
      <bbk:Obs TIME_PERIOD="2022-06-27" OBS_VALUE="12.78471" BBK_DIFF_A="-0.19562"/>
      <bbk:Obs TIME_PERIOD="2022-06-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-06-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-06-24" OBS_VALUE="12.98033" BBK_DIFF_A="0.32753"/>
      <bbk:Obs TIME_PERIOD="2022-06-23" OBS_VALUE="12.6528" BBK_DIFF_A="-0.30956"/>
      <bbk:Obs TIME_PERIOD="2022-06-22" OBS_VALUE="12.96236" BBK_DIFF_A="0.13628"/>
      <bbk:Obs TIME_PERIOD="2022-06-21" OBS_VALUE="12.82608" BBK_DIFF_A="-0.20116"/>
      <bbk:Obs TIME_PERIOD="2022-06-20" OBS_VALUE="13.02724" BBK_DIFF_A="0.16048"/>
      <bbk:Obs TIME_PERIOD="2022-06-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-06-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-06-17" OBS_VALUE="12.86676" BBK_DIFF_A="0.0423"/>
      <bbk:Obs TIME_PERIOD="2022-06-16" OBS_VALUE="12.82446" BBK_DIFF_A="0.47803"/>
      <bbk:Obs TIME_PERIOD="2022-06-15" OBS_VALUE="12.34643" BBK_DIFF_A="-0.29607"/>
      <bbk:Obs TIME_PERIOD="2022-06-14" OBS_VALUE="12.6425" BBK_DIFF_A="-0.48947"/>
      <bbk:Obs TIME_PERIOD="2022-06-13" OBS_VALUE="13.13197" BBK_DIFF_A="0.07073"/>
      <bbk:Obs TIME_PERIOD="2022-06-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-06-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-06-10" OBS_VALUE="13.06124" BBK_DIFF_A="0.30299"/>
      <bbk:Obs TIME_PERIOD="2022-06-09" OBS_VALUE="12.75825" BBK_DIFF_A="-0.51266"/>
      <bbk:Obs TIME_PERIOD="2022-06-08" OBS_VALUE="13.27091" BBK_DIFF_A="0.08055"/>
      <bbk:Obs TIME_PERIOD="2022-06-07" OBS_VALUE="13.19036" BBK_DIFF_A="-0.41654"/>
      <bbk:Obs TIME_PERIOD="2022-06-06" OBS_VALUE="13.6069" BBK_DIFF_A="0.31725"/>
      <bbk:Obs TIME_PERIOD="2022-06-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-06-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-06-03" OBS_VALUE="13.28965" BBK_DIFF_A="0.04375"/>
      <bbk:Obs TIME_PERIOD="2022-06-02" OBS_VALUE="13.2459" BBK_DIFF_A="-0.03638"/>
      <bbk:Obs TIME_PERIOD="2022-06-01" OBS_VALUE="13.28228" BBK_DIFF_A="-0.15148"/>
      <bbk:Obs TIME_PERIOD="2022-05-31" OBS_VALUE="13.43376" BBK_DIFF_A="0.09224"/>
      <bbk:Obs TIME_PERIOD="2022-05-30" OBS_VALUE="13.34152" BBK_DIFF_A="0.16825"/>
      <bbk:Obs TIME_PERIOD="2022-05-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-05-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-05-27" OBS_VALUE="13.17327" BBK_DIFF_A="0.01129"/>
      <bbk:Obs TIME_PERIOD="2022-05-26" OBS_VALUE="13.16198" BBK_DIFF_A="0.84212"/>
      <bbk:Obs TIME_PERIOD="2022-05-25" OBS_VALUE="12.31986" BBK_DIFF_A="-0.26735"/>
      <bbk:Obs TIME_PERIOD="2022-05-24" OBS_VALUE="12.58721" BBK_DIFF_A="0.44908"/>
      <bbk:Obs TIME_PERIOD="2022-05-23" OBS_VALUE="12.13813" BBK_DIFF_A="0.31088"/>
      <bbk:Obs TIME_PERIOD="2022-05-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-05-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-05-20" OBS_VALUE="11.82725" BBK_DIFF_A="1.00322"/>
      <bbk:Obs TIME_PERIOD="2022-05-19" OBS_VALUE="10.82403" BBK_DIFF_A="-0.42546"/>
      <bbk:Obs TIME_PERIOD="2022-05-18" OBS_VALUE="11.24949" BBK_DIFF_A="-0.11295"/>
      <bbk:Obs TIME_PERIOD="2022-05-17" OBS_VALUE="11.36244" BBK_DIFF_A="0.009"/>
      <bbk:Obs TIME_PERIOD="2022-05-16" OBS_VALUE="11.35344" BBK_DIFF_A="-0.08063"/>
      <bbk:Obs TIME_PERIOD="2022-05-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-05-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-05-13" OBS_VALUE="11.43407" BBK_DIFF_A="0.10264"/>
      <bbk:Obs TIME_PERIOD="2022-05-12" OBS_VALUE="11.33143" BBK_DIFF_A="0.09089"/>
      <bbk:Obs TIME_PERIOD="2022-05-11" OBS_VALUE="11.24054" BBK_DIFF_A="0.74447"/>
      <bbk:Obs TIME_PERIOD="2022-05-10" OBS_VALUE="10.49607" BBK_DIFF_A="9.40482"/>
      <bbk:Obs TIME_PERIOD="2022-05-09" OBS_VALUE="1.09125" BBK_DIFF_A="-0.27072"/>
      <bbk:Obs TIME_PERIOD="2022-05-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-05-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-05-06" OBS_VALUE="1.36197" BBK_DIFF_A="-0.12903"/>
      <bbk:Obs TIME_PERIOD="2022-05-05" OBS_VALUE="1.491" BBK_DIFF_A="-0.207"/>
      <bbk:Obs TIME_PERIOD="2022-05-04" OBS_VALUE="1.698" BBK_DIFF_A="0.03256"/>
      <bbk:Obs TIME_PERIOD="2022-05-03" OBS_VALUE="1.66544" BBK_DIFF_A="-7.46182"/>
      <bbk:Obs TIME_PERIOD="2022-05-02" OBS_VALUE="9.12726" BBK_DIFF_A="-1.08735"/>
      <bbk:Obs TIME_PERIOD="2022-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-04-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-04-29" OBS_VALUE="10.21461" BBK_DIFF_A="0.20745"/>
      <bbk:Obs TIME_PERIOD="2022-04-28" OBS_VALUE="10.00716" BBK_DIFF_A="-0.59697"/>
      <bbk:Obs TIME_PERIOD="2022-04-27" OBS_VALUE="10.60413" BBK_DIFF_A="6.78634"/>
      <bbk:Obs TIME_PERIOD="2022-04-26" OBS_VALUE="3.81779" BBK_DIFF_A="1.7392"/>
      <bbk:Obs TIME_PERIOD="2022-04-25" OBS_VALUE="2.07859" BBK_DIFF_A="0.19363"/>
      <bbk:Obs TIME_PERIOD="2022-04-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-04-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-04-22" OBS_VALUE="1.88496" BBK_DIFF_A="0.50261"/>
      <bbk:Obs TIME_PERIOD="2022-04-21" OBS_VALUE="1.38235" BBK_DIFF_A="-0.12731"/>
      <bbk:Obs TIME_PERIOD="2022-04-20" OBS_VALUE="1.50966" BBK_DIFF_A="1.1395"/>
      <bbk:Obs TIME_PERIOD="2022-04-19" OBS_VALUE="0.37016" BBK_DIFF_A="0.05476"/>
      <bbk:Obs TIME_PERIOD="2022-04-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-04-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-04-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-04-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-04-14" OBS_VALUE="0.3154" BBK_DIFF_A="0.17846"/>
      <bbk:Obs TIME_PERIOD="2022-04-13" OBS_VALUE="0.13694" BBK_DIFF_A="-0.00744"/>
      <bbk:Obs TIME_PERIOD="2022-04-12" OBS_VALUE="0.14438" BBK_DIFF_A="0.14415"/>
      <bbk:Obs TIME_PERIOD="2022-04-11" OBS_VALUE="2.3E-4" BBK_DIFF_A="-2.05541"/>
      <bbk:Obs TIME_PERIOD="2022-04-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-04-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-04-08" OBS_VALUE="2.05564" BBK_DIFF_A="0.23548"/>
      <bbk:Obs TIME_PERIOD="2022-04-07" OBS_VALUE="1.82016" BBK_DIFF_A="1.66849"/>
      <bbk:Obs TIME_PERIOD="2022-04-06" OBS_VALUE="0.15167" BBK_DIFF_A="-0.00573"/>
      <bbk:Obs TIME_PERIOD="2022-04-05" OBS_VALUE="0.1574" BBK_DIFF_A="-0.26574"/>
      <bbk:Obs TIME_PERIOD="2022-04-04" OBS_VALUE="0.42314" BBK_DIFF_A="0.04604"/>
      <bbk:Obs TIME_PERIOD="2022-04-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-04-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-04-01" OBS_VALUE="0.3771" BBK_DIFF_A="-0.01381"/>
      <bbk:Obs TIME_PERIOD="2022-03-31" OBS_VALUE="0.39091" BBK_DIFF_A="-0.22663"/>
      <bbk:Obs TIME_PERIOD="2022-03-30" OBS_VALUE="0.61754" BBK_DIFF_A="-9.32403"/>
      <bbk:Obs TIME_PERIOD="2022-03-29" OBS_VALUE="9.94157" BBK_DIFF_A="1.57964"/>
      <bbk:Obs TIME_PERIOD="2022-03-28" OBS_VALUE="8.36193" BBK_DIFF_A="6.71987"/>
      <bbk:Obs TIME_PERIOD="2022-03-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-03-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-03-25" OBS_VALUE="1.64206" BBK_DIFF_A="-0.01283"/>
      <bbk:Obs TIME_PERIOD="2022-03-24" OBS_VALUE="1.65489" BBK_DIFF_A="-0.08714"/>
      <bbk:Obs TIME_PERIOD="2022-03-23" OBS_VALUE="1.74203" BBK_DIFF_A="0.29482"/>
      <bbk:Obs TIME_PERIOD="2022-03-22" OBS_VALUE="1.44721" BBK_DIFF_A="-0.14488"/>
      <bbk:Obs TIME_PERIOD="2022-03-21" OBS_VALUE="1.59209" BBK_DIFF_A="0.09604"/>
      <bbk:Obs TIME_PERIOD="2022-03-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-03-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-03-18" OBS_VALUE="1.49605" BBK_DIFF_A="0.09062"/>
      <bbk:Obs TIME_PERIOD="2022-03-17" OBS_VALUE="1.40543" BBK_DIFF_A="-0.14718"/>
      <bbk:Obs TIME_PERIOD="2022-03-16" OBS_VALUE="1.55261" BBK_DIFF_A="0.06609"/>
      <bbk:Obs TIME_PERIOD="2022-03-15" OBS_VALUE="1.48652" BBK_DIFF_A="-0.03596"/>
      <bbk:Obs TIME_PERIOD="2022-03-14" OBS_VALUE="1.52248" BBK_DIFF_A="1.36364"/>
      <bbk:Obs TIME_PERIOD="2022-03-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-03-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-03-11" OBS_VALUE="0.15884" BBK_DIFF_A="-0.01632"/>
      <bbk:Obs TIME_PERIOD="2022-03-10" OBS_VALUE="0.17516" BBK_DIFF_A="-0.02102"/>
      <bbk:Obs TIME_PERIOD="2022-03-09" OBS_VALUE="0.19618" BBK_DIFF_A="-0.03433"/>
      <bbk:Obs TIME_PERIOD="2022-03-08" OBS_VALUE="0.23051" BBK_DIFF_A="-0.82221"/>
      <bbk:Obs TIME_PERIOD="2022-03-07" OBS_VALUE="1.05272" BBK_DIFF_A="-1.30348"/>
      <bbk:Obs TIME_PERIOD="2022-03-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-03-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-03-04" OBS_VALUE="2.3562" BBK_DIFF_A="0.60831"/>
      <bbk:Obs TIME_PERIOD="2022-03-03" OBS_VALUE="1.74789" BBK_DIFF_A="-0.73153"/>
      <bbk:Obs TIME_PERIOD="2022-03-02" OBS_VALUE="2.47942" BBK_DIFF_A="0.3635"/>
      <bbk:Obs TIME_PERIOD="2022-03-01" OBS_VALUE="2.11592" BBK_DIFF_A="-1.14148"/>
      <bbk:Obs TIME_PERIOD="2022-02-28" OBS_VALUE="3.2574" BBK_DIFF_A="-0.00715"/>
      <bbk:Obs TIME_PERIOD="2022-02-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-02-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-02-25" OBS_VALUE="3.26455" BBK_DIFF_A="0.40602"/>
      <bbk:Obs TIME_PERIOD="2022-02-24" OBS_VALUE="2.85853" BBK_DIFF_A="-0.2767"/>
      <bbk:Obs TIME_PERIOD="2022-02-23" OBS_VALUE="3.13523" BBK_DIFF_A="0.0698"/>
      <bbk:Obs TIME_PERIOD="2022-02-22" OBS_VALUE="3.06543" BBK_DIFF_A="0.24385"/>
      <bbk:Obs TIME_PERIOD="2022-02-21" OBS_VALUE="2.82158" BBK_DIFF_A="0.21603"/>
      <bbk:Obs TIME_PERIOD="2022-02-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-02-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-02-18" OBS_VALUE="2.60555" BBK_DIFF_A="-0.32813"/>
      <bbk:Obs TIME_PERIOD="2022-02-17" OBS_VALUE="2.93368" BBK_DIFF_A="0.38021"/>
      <bbk:Obs TIME_PERIOD="2022-02-16" OBS_VALUE="2.55347" BBK_DIFF_A="-0.31592"/>
      <bbk:Obs TIME_PERIOD="2022-02-15" OBS_VALUE="2.86939" BBK_DIFF_A="-0.51411"/>
      <bbk:Obs TIME_PERIOD="2022-02-14" OBS_VALUE="3.3835" BBK_DIFF_A="-5.88035"/>
      <bbk:Obs TIME_PERIOD="2022-02-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-02-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-02-11" OBS_VALUE="9.26385" BBK_DIFF_A="2.38838"/>
      <bbk:Obs TIME_PERIOD="2022-02-10" OBS_VALUE="6.87547" BBK_DIFF_A="0.40461"/>
      <bbk:Obs TIME_PERIOD="2022-02-09" OBS_VALUE="6.47086" BBK_DIFF_A="0.75355"/>
      <bbk:Obs TIME_PERIOD="2022-02-08" OBS_VALUE="5.71731" BBK_DIFF_A="0.23186"/>
      <bbk:Obs TIME_PERIOD="2022-02-07" OBS_VALUE="5.48545" BBK_DIFF_A="-1.33646"/>
      <bbk:Obs TIME_PERIOD="2022-02-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-02-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-02-04" OBS_VALUE="6.82191" BBK_DIFF_A="4.05304"/>
      <bbk:Obs TIME_PERIOD="2022-02-03" OBS_VALUE="2.76887" BBK_DIFF_A="-0.18481"/>
      <bbk:Obs TIME_PERIOD="2022-02-02" OBS_VALUE="2.95368" BBK_DIFF_A="0.0096"/>
      <bbk:Obs TIME_PERIOD="2022-02-01" OBS_VALUE="2.94408" BBK_DIFF_A="-0.57179"/>
      <bbk:Obs TIME_PERIOD="2022-01-31" OBS_VALUE="3.51587" BBK_DIFF_A="-6.59337"/>
      <bbk:Obs TIME_PERIOD="2022-01-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-01-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-01-28" OBS_VALUE="10.10924" BBK_DIFF_A="-1.85897"/>
      <bbk:Obs TIME_PERIOD="2022-01-27" OBS_VALUE="11.96821" BBK_DIFF_A="0.49702"/>
      <bbk:Obs TIME_PERIOD="2022-01-26" OBS_VALUE="11.47119" BBK_DIFF_A="-3.77418"/>
      <bbk:Obs TIME_PERIOD="2022-01-25" OBS_VALUE="15.24537" BBK_DIFF_A="2.26397"/>
      <bbk:Obs TIME_PERIOD="2022-01-24" OBS_VALUE="12.9814" BBK_DIFF_A="-0.2064"/>
      <bbk:Obs TIME_PERIOD="2022-01-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-01-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-01-21" OBS_VALUE="13.1878" BBK_DIFF_A="-3.23497"/>
      <bbk:Obs TIME_PERIOD="2022-01-20" OBS_VALUE="16.42277" BBK_DIFF_A="-0.41908"/>
      <bbk:Obs TIME_PERIOD="2022-01-19" OBS_VALUE="16.84185" BBK_DIFF_A="0.03163"/>
      <bbk:Obs TIME_PERIOD="2022-01-18" OBS_VALUE="16.81022" BBK_DIFF_A="-0.23058"/>
      <bbk:Obs TIME_PERIOD="2022-01-17" OBS_VALUE="17.0408" BBK_DIFF_A="0.44707"/>
      <bbk:Obs TIME_PERIOD="2022-01-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-01-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-01-14" OBS_VALUE="16.59373" BBK_DIFF_A="-0.237"/>
      <bbk:Obs TIME_PERIOD="2022-01-13" OBS_VALUE="16.83073" BBK_DIFF_A="16.61513"/>
      <bbk:Obs TIME_PERIOD="2022-01-12" OBS_VALUE="0.2156" BBK_DIFF_A="-0.01578"/>
      <bbk:Obs TIME_PERIOD="2022-01-11" OBS_VALUE="0.23138" BBK_DIFF_A="-17.86471"/>
      <bbk:Obs TIME_PERIOD="2022-01-10" OBS_VALUE="18.09609" BBK_DIFF_A="-0.23101"/>
      <bbk:Obs TIME_PERIOD="2022-01-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-01-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-01-07" OBS_VALUE="18.3271" BBK_DIFF_A="4.00076"/>
      <bbk:Obs TIME_PERIOD="2022-01-06" OBS_VALUE="14.32634" BBK_DIFF_A="10.275"/>
      <bbk:Obs TIME_PERIOD="2022-01-05" OBS_VALUE="4.05134" BBK_DIFF_A="0.64538"/>
      <bbk:Obs TIME_PERIOD="2022-01-04" OBS_VALUE="3.40596" BBK_DIFF_A="1.97721"/>
      <bbk:Obs TIME_PERIOD="2022-01-03" OBS_VALUE="1.42875" BBK_DIFF_A="0.78669"/>
      <bbk:Obs TIME_PERIOD="2022-01-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2022-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-12-30" OBS_VALUE="0.64206" BBK_DIFF_A="0.05684"/>
      <bbk:Obs TIME_PERIOD="2021-12-29" OBS_VALUE="0.58522" BBK_DIFF_A="-0.16317"/>
      <bbk:Obs TIME_PERIOD="2021-12-28" OBS_VALUE="0.74839" BBK_DIFF_A="0.08735"/>
      <bbk:Obs TIME_PERIOD="2021-12-27" OBS_VALUE="0.66104" BBK_DIFF_A="0.15159"/>
      <bbk:Obs TIME_PERIOD="2021-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-12-23" OBS_VALUE="0.50945" BBK_DIFF_A="0.04161"/>
      <bbk:Obs TIME_PERIOD="2021-12-22" OBS_VALUE="0.46784" BBK_DIFF_A="0.03432"/>
      <bbk:Obs TIME_PERIOD="2021-12-21" OBS_VALUE="0.43352" BBK_DIFF_A="-0.0242"/>
      <bbk:Obs TIME_PERIOD="2021-12-20" OBS_VALUE="0.45772" BBK_DIFF_A="-0.04325"/>
      <bbk:Obs TIME_PERIOD="2021-12-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-12-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-12-17" OBS_VALUE="0.50097" BBK_DIFF_A="0.0185"/>
      <bbk:Obs TIME_PERIOD="2021-12-16" OBS_VALUE="0.48247" BBK_DIFF_A="0.08113"/>
      <bbk:Obs TIME_PERIOD="2021-12-15" OBS_VALUE="0.40134" BBK_DIFF_A="0.02196"/>
      <bbk:Obs TIME_PERIOD="2021-12-14" OBS_VALUE="0.37938" BBK_DIFF_A="-0.07277"/>
      <bbk:Obs TIME_PERIOD="2021-12-13" OBS_VALUE="0.45215" BBK_DIFF_A="-0.035"/>
      <bbk:Obs TIME_PERIOD="2021-12-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-12-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-12-10" OBS_VALUE="0.48715" BBK_DIFF_A="-0.08425"/>
      <bbk:Obs TIME_PERIOD="2021-12-09" OBS_VALUE="0.5714" BBK_DIFF_A="0.04624"/>
      <bbk:Obs TIME_PERIOD="2021-12-08" OBS_VALUE="0.52516" BBK_DIFF_A="-0.00731"/>
      <bbk:Obs TIME_PERIOD="2021-12-07" OBS_VALUE="0.53247" BBK_DIFF_A="0.12149"/>
      <bbk:Obs TIME_PERIOD="2021-12-06" OBS_VALUE="0.41098" BBK_DIFF_A="-0.04104"/>
      <bbk:Obs TIME_PERIOD="2021-12-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-12-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-12-03" OBS_VALUE="0.45202" BBK_DIFF_A="0.03672"/>
      <bbk:Obs TIME_PERIOD="2021-12-02" OBS_VALUE="0.4153" BBK_DIFF_A="0.02317"/>
      <bbk:Obs TIME_PERIOD="2021-12-01" OBS_VALUE="0.39213" BBK_DIFF_A="-0.01814"/>
      <bbk:Obs TIME_PERIOD="2021-11-30" OBS_VALUE="0.41027" BBK_DIFF_A="0.03952"/>
      <bbk:Obs TIME_PERIOD="2021-11-29" OBS_VALUE="0.37075" BBK_DIFF_A="0.01085"/>
      <bbk:Obs TIME_PERIOD="2021-11-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-11-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-11-26" OBS_VALUE="0.3599" BBK_DIFF_A="0.015"/>
      <bbk:Obs TIME_PERIOD="2021-11-25" OBS_VALUE="0.3449" BBK_DIFF_A="0.01958"/>
      <bbk:Obs TIME_PERIOD="2021-11-24" OBS_VALUE="0.32532" BBK_DIFF_A="0.00659"/>
      <bbk:Obs TIME_PERIOD="2021-11-23" OBS_VALUE="0.31873" BBK_DIFF_A="0.00382"/>
      <bbk:Obs TIME_PERIOD="2021-11-22" OBS_VALUE="0.31491" BBK_DIFF_A="0.00558"/>
      <bbk:Obs TIME_PERIOD="2021-11-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-11-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-11-19" OBS_VALUE="0.30933" BBK_DIFF_A="-0.02364"/>
      <bbk:Obs TIME_PERIOD="2021-11-18" OBS_VALUE="0.33297" BBK_DIFF_A="-0.02227"/>
      <bbk:Obs TIME_PERIOD="2021-11-17" OBS_VALUE="0.35524" BBK_DIFF_A="-0.00477"/>
      <bbk:Obs TIME_PERIOD="2021-11-16" OBS_VALUE="0.36001" BBK_DIFF_A="0.02721"/>
      <bbk:Obs TIME_PERIOD="2021-11-15" OBS_VALUE="0.3328" BBK_DIFF_A="0.02186"/>
      <bbk:Obs TIME_PERIOD="2021-11-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-11-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-11-12" OBS_VALUE="0.31094" BBK_DIFF_A="-0.00878"/>
      <bbk:Obs TIME_PERIOD="2021-11-11" OBS_VALUE="0.31972" BBK_DIFF_A="-0.09668"/>
      <bbk:Obs TIME_PERIOD="2021-11-10" OBS_VALUE="0.4164" BBK_DIFF_A="-0.01942"/>
      <bbk:Obs TIME_PERIOD="2021-11-09" OBS_VALUE="0.43582" BBK_DIFF_A="-0.05342"/>
      <bbk:Obs TIME_PERIOD="2021-11-08" OBS_VALUE="0.48924" BBK_DIFF_A="-0.21065"/>
      <bbk:Obs TIME_PERIOD="2021-11-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-11-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-11-05" OBS_VALUE="0.69989" BBK_DIFF_A="0.11225"/>
      <bbk:Obs TIME_PERIOD="2021-11-04" OBS_VALUE="0.58764" BBK_DIFF_A="0.17164"/>
      <bbk:Obs TIME_PERIOD="2021-11-03" OBS_VALUE="0.416" BBK_DIFF_A="-0.04567"/>
      <bbk:Obs TIME_PERIOD="2021-11-02" OBS_VALUE="0.46167" BBK_DIFF_A="0.01591"/>
      <bbk:Obs TIME_PERIOD="2021-11-01" OBS_VALUE="0.44576" BBK_DIFF_A="5.4E-4"/>
      <bbk:Obs TIME_PERIOD="2021-10-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-10-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-10-29" OBS_VALUE="0.44522" BBK_DIFF_A="0.00522"/>
      <bbk:Obs TIME_PERIOD="2021-10-28" OBS_VALUE="0.44" BBK_DIFF_A="0.14646"/>
      <bbk:Obs TIME_PERIOD="2021-10-27" OBS_VALUE="0.29354" BBK_DIFF_A="-0.00655"/>
      <bbk:Obs TIME_PERIOD="2021-10-26" OBS_VALUE="0.30009" BBK_DIFF_A="-0.02747"/>
      <bbk:Obs TIME_PERIOD="2021-10-25" OBS_VALUE="0.32756" BBK_DIFF_A="-0.07871"/>
      <bbk:Obs TIME_PERIOD="2021-10-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-10-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-10-22" OBS_VALUE="0.40627" BBK_DIFF_A="-0.03901"/>
      <bbk:Obs TIME_PERIOD="2021-10-21" OBS_VALUE="0.44528" BBK_DIFF_A="-0.18329"/>
      <bbk:Obs TIME_PERIOD="2021-10-20" OBS_VALUE="0.62857" BBK_DIFF_A="0.17171"/>
      <bbk:Obs TIME_PERIOD="2021-10-19" OBS_VALUE="0.45686" BBK_DIFF_A="-0.05028"/>
      <bbk:Obs TIME_PERIOD="2021-10-18" OBS_VALUE="0.50714" BBK_DIFF_A="0.48891"/>
      <bbk:Obs TIME_PERIOD="2021-10-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-10-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-10-15" OBS_VALUE="0.01823" BBK_DIFF_A="9.3E-4"/>
      <bbk:Obs TIME_PERIOD="2021-10-14" OBS_VALUE="0.0173" BBK_DIFF_A="-0.05685"/>
      <bbk:Obs TIME_PERIOD="2021-10-13" OBS_VALUE="0.07415" BBK_DIFF_A="-0.03128"/>
      <bbk:Obs TIME_PERIOD="2021-10-12" OBS_VALUE="0.10543" BBK_DIFF_A="-0.01249"/>
      <bbk:Obs TIME_PERIOD="2021-10-11" OBS_VALUE="0.11792" BBK_DIFF_A="-0.53347"/>
      <bbk:Obs TIME_PERIOD="2021-10-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-10-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-10-08" OBS_VALUE="0.65139" BBK_DIFF_A="0.04151"/>
      <bbk:Obs TIME_PERIOD="2021-10-07" OBS_VALUE="0.60988" BBK_DIFF_A="-0.11365"/>
      <bbk:Obs TIME_PERIOD="2021-10-06" OBS_VALUE="0.72353" BBK_DIFF_A="0.04581"/>
      <bbk:Obs TIME_PERIOD="2021-10-05" OBS_VALUE="0.67772" BBK_DIFF_A="0.62856"/>
      <bbk:Obs TIME_PERIOD="2021-10-04" OBS_VALUE="0.04916" BBK_DIFF_A="0.03552"/>
      <bbk:Obs TIME_PERIOD="2021-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-10-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-10-01" OBS_VALUE="0.01364" BBK_DIFF_A="-0.0034"/>
      <bbk:Obs TIME_PERIOD="2021-09-30" OBS_VALUE="0.01704" BBK_DIFF_A="-0.00735"/>
      <bbk:Obs TIME_PERIOD="2021-09-29" OBS_VALUE="0.02439" BBK_DIFF_A="0.00297"/>
      <bbk:Obs TIME_PERIOD="2021-09-28" OBS_VALUE="0.02142" BBK_DIFF_A="0.00715"/>
      <bbk:Obs TIME_PERIOD="2021-09-27" OBS_VALUE="0.01427" BBK_DIFF_A="-0.76658"/>
      <bbk:Obs TIME_PERIOD="2021-09-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-09-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-09-24" OBS_VALUE="0.78085" BBK_DIFF_A="-1.2313"/>
      <bbk:Obs TIME_PERIOD="2021-09-23" OBS_VALUE="2.01215" BBK_DIFF_A="0.04897"/>
      <bbk:Obs TIME_PERIOD="2021-09-22" OBS_VALUE="1.96318" BBK_DIFF_A="0.05031"/>
      <bbk:Obs TIME_PERIOD="2021-09-21" OBS_VALUE="1.91287" BBK_DIFF_A="-0.11795"/>
      <bbk:Obs TIME_PERIOD="2021-09-20" OBS_VALUE="2.03082" BBK_DIFF_A="0.06261"/>
      <bbk:Obs TIME_PERIOD="2021-09-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-09-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-09-17" OBS_VALUE="1.96821" BBK_DIFF_A="-0.08088"/>
      <bbk:Obs TIME_PERIOD="2021-09-16" OBS_VALUE="2.04909" BBK_DIFF_A="-0.00978"/>
      <bbk:Obs TIME_PERIOD="2021-09-15" OBS_VALUE="2.05887" BBK_DIFF_A="0.08137"/>
      <bbk:Obs TIME_PERIOD="2021-09-14" OBS_VALUE="1.9775" BBK_DIFF_A="-0.039"/>
      <bbk:Obs TIME_PERIOD="2021-09-13" OBS_VALUE="2.0165" BBK_DIFF_A="-8.8E-4"/>
      <bbk:Obs TIME_PERIOD="2021-09-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-09-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-09-10" OBS_VALUE="2.01738" BBK_DIFF_A="0.06551"/>
      <bbk:Obs TIME_PERIOD="2021-09-09" OBS_VALUE="1.95187" BBK_DIFF_A="0.02393"/>
      <bbk:Obs TIME_PERIOD="2021-09-08" OBS_VALUE="1.92794" BBK_DIFF_A="0.10536"/>
      <bbk:Obs TIME_PERIOD="2021-09-07" OBS_VALUE="1.82258" BBK_DIFF_A="0.35814"/>
      <bbk:Obs TIME_PERIOD="2021-09-06" OBS_VALUE="1.46444" BBK_DIFF_A="-5.11463"/>
      <bbk:Obs TIME_PERIOD="2021-09-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-09-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-09-03" OBS_VALUE="6.57907" BBK_DIFF_A="-0.36499"/>
      <bbk:Obs TIME_PERIOD="2021-09-02" OBS_VALUE="6.94406" BBK_DIFF_A="5.03796"/>
      <bbk:Obs TIME_PERIOD="2021-09-01" OBS_VALUE="1.9061" BBK_DIFF_A="-0.19078"/>
      <bbk:Obs TIME_PERIOD="2021-08-31" OBS_VALUE="2.09688" BBK_DIFF_A="0.0336"/>
      <bbk:Obs TIME_PERIOD="2021-08-30" OBS_VALUE="2.06328" BBK_DIFF_A="0.03647"/>
      <bbk:Obs TIME_PERIOD="2021-08-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-08-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-08-27" OBS_VALUE="2.02681" BBK_DIFF_A="0.08178"/>
      <bbk:Obs TIME_PERIOD="2021-08-26" OBS_VALUE="1.94503" BBK_DIFF_A="0.08144"/>
      <bbk:Obs TIME_PERIOD="2021-08-25" OBS_VALUE="1.86359" BBK_DIFF_A="-0.0405"/>
      <bbk:Obs TIME_PERIOD="2021-08-24" OBS_VALUE="1.90409" BBK_DIFF_A="-0.32986"/>
      <bbk:Obs TIME_PERIOD="2021-08-23" OBS_VALUE="2.23395" BBK_DIFF_A="-0.0418"/>
      <bbk:Obs TIME_PERIOD="2021-08-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-08-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-08-20" OBS_VALUE="2.27575" BBK_DIFF_A="0.02006"/>
      <bbk:Obs TIME_PERIOD="2021-08-19" OBS_VALUE="2.25569" BBK_DIFF_A="-3.70037"/>
      <bbk:Obs TIME_PERIOD="2021-08-18" OBS_VALUE="5.95606" BBK_DIFF_A="-0.04592"/>
      <bbk:Obs TIME_PERIOD="2021-08-17" OBS_VALUE="6.00198" BBK_DIFF_A="-0.09475"/>
      <bbk:Obs TIME_PERIOD="2021-08-16" OBS_VALUE="6.09673" BBK_DIFF_A="-0.00186"/>
      <bbk:Obs TIME_PERIOD="2021-08-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-08-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-08-13" OBS_VALUE="6.09859" BBK_DIFF_A="-0.38147"/>
      <bbk:Obs TIME_PERIOD="2021-08-12" OBS_VALUE="6.48006" BBK_DIFF_A="-0.10128"/>
      <bbk:Obs TIME_PERIOD="2021-08-11" OBS_VALUE="6.58134" BBK_DIFF_A="-0.3431"/>
      <bbk:Obs TIME_PERIOD="2021-08-10" OBS_VALUE="6.92444" BBK_DIFF_A="0.27547"/>
      <bbk:Obs TIME_PERIOD="2021-08-09" OBS_VALUE="6.64897" BBK_DIFF_A="4.59628"/>
      <bbk:Obs TIME_PERIOD="2021-08-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-08-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-08-06" OBS_VALUE="2.05269" BBK_DIFF_A="0.0109"/>
      <bbk:Obs TIME_PERIOD="2021-08-05" OBS_VALUE="2.04179" BBK_DIFF_A="-0.05192"/>
      <bbk:Obs TIME_PERIOD="2021-08-04" OBS_VALUE="2.09371" BBK_DIFF_A="0.05024"/>
      <bbk:Obs TIME_PERIOD="2021-08-03" OBS_VALUE="2.04347" BBK_DIFF_A="0.04125"/>
      <bbk:Obs TIME_PERIOD="2021-08-02" OBS_VALUE="2.00222" BBK_DIFF_A="-0.00268"/>
      <bbk:Obs TIME_PERIOD="2021-08-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-07-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-07-30" OBS_VALUE="2.0049" BBK_DIFF_A="0.0026"/>
      <bbk:Obs TIME_PERIOD="2021-07-29" OBS_VALUE="2.0023" BBK_DIFF_A="0.0204"/>
      <bbk:Obs TIME_PERIOD="2021-07-28" OBS_VALUE="1.9819" BBK_DIFF_A="0.02606"/>
      <bbk:Obs TIME_PERIOD="2021-07-27" OBS_VALUE="1.95584" BBK_DIFF_A="-0.05185"/>
      <bbk:Obs TIME_PERIOD="2021-07-26" OBS_VALUE="2.00769" BBK_DIFF_A="0.07237"/>
      <bbk:Obs TIME_PERIOD="2021-07-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-07-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-07-23" OBS_VALUE="1.93532" BBK_DIFF_A="0.03101"/>
      <bbk:Obs TIME_PERIOD="2021-07-22" OBS_VALUE="1.90431" BBK_DIFF_A="-0.06844"/>
      <bbk:Obs TIME_PERIOD="2021-07-21" OBS_VALUE="1.97275" BBK_DIFF_A="-0.00189"/>
      <bbk:Obs TIME_PERIOD="2021-07-20" OBS_VALUE="1.97464" BBK_DIFF_A="0.01803"/>
      <bbk:Obs TIME_PERIOD="2021-07-19" OBS_VALUE="1.95661" BBK_DIFF_A="0.22971"/>
      <bbk:Obs TIME_PERIOD="2021-07-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-07-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-07-16" OBS_VALUE="1.7269" BBK_DIFF_A="0.05514"/>
      <bbk:Obs TIME_PERIOD="2021-07-15" OBS_VALUE="1.67176" BBK_DIFF_A="-0.2741"/>
      <bbk:Obs TIME_PERIOD="2021-07-14" OBS_VALUE="1.94586" BBK_DIFF_A="0.01653"/>
      <bbk:Obs TIME_PERIOD="2021-07-13" OBS_VALUE="1.92933" BBK_DIFF_A="-0.04666"/>
      <bbk:Obs TIME_PERIOD="2021-07-12" OBS_VALUE="1.97599" BBK_DIFF_A="-0.04221"/>
      <bbk:Obs TIME_PERIOD="2021-07-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-07-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-07-09" OBS_VALUE="2.0182" BBK_DIFF_A="-0.02377"/>
      <bbk:Obs TIME_PERIOD="2021-07-08" OBS_VALUE="2.04197" BBK_DIFF_A="0.06392"/>
      <bbk:Obs TIME_PERIOD="2021-07-07" OBS_VALUE="1.97805" BBK_DIFF_A="0.12794"/>
      <bbk:Obs TIME_PERIOD="2021-07-06" OBS_VALUE="1.85011" BBK_DIFF_A="0.04801"/>
      <bbk:Obs TIME_PERIOD="2021-07-05" OBS_VALUE="1.8021" BBK_DIFF_A="0.0755"/>
      <bbk:Obs TIME_PERIOD="2021-07-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-07-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-07-02" OBS_VALUE="1.7266" BBK_DIFF_A="-0.0768"/>
      <bbk:Obs TIME_PERIOD="2021-07-01" OBS_VALUE="1.8034" BBK_DIFF_A="0.06707"/>
      <bbk:Obs TIME_PERIOD="2021-06-30" OBS_VALUE="1.73633" BBK_DIFF_A="-0.00973"/>
      <bbk:Obs TIME_PERIOD="2021-06-29" OBS_VALUE="1.74606" BBK_DIFF_A="1.55967"/>
      <bbk:Obs TIME_PERIOD="2021-06-28" OBS_VALUE="0.18639" BBK_DIFF_A="-1.0E-5"/>
      <bbk:Obs TIME_PERIOD="2021-06-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-06-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-06-25" OBS_VALUE="0.1864" BBK_DIFF_A="-0.00384"/>
      <bbk:Obs TIME_PERIOD="2021-06-24" OBS_VALUE="0.19024" BBK_DIFF_A="0.00888"/>
      <bbk:Obs TIME_PERIOD="2021-06-23" OBS_VALUE="0.18136" BBK_DIFF_A="-0.01171"/>
      <bbk:Obs TIME_PERIOD="2021-06-22" OBS_VALUE="0.19307" BBK_DIFF_A="0.00591"/>
      <bbk:Obs TIME_PERIOD="2021-06-21" OBS_VALUE="0.18716" BBK_DIFF_A="0.00295"/>
      <bbk:Obs TIME_PERIOD="2021-06-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-06-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-06-18" OBS_VALUE="0.18421" BBK_DIFF_A="-0.00554"/>
      <bbk:Obs TIME_PERIOD="2021-06-17" OBS_VALUE="0.18975" BBK_DIFF_A="0.00898"/>
      <bbk:Obs TIME_PERIOD="2021-06-16" OBS_VALUE="0.18077" BBK_DIFF_A="-0.00623"/>
      <bbk:Obs TIME_PERIOD="2021-06-15" OBS_VALUE="0.187" BBK_DIFF_A="0.00255"/>
      <bbk:Obs TIME_PERIOD="2021-06-14" OBS_VALUE="0.18445" BBK_DIFF_A="-0.00758"/>
      <bbk:Obs TIME_PERIOD="2021-06-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-06-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-06-11" OBS_VALUE="0.19203" BBK_DIFF_A="-1.5305"/>
      <bbk:Obs TIME_PERIOD="2021-06-10" OBS_VALUE="1.72253" BBK_DIFF_A="0.03303"/>
      <bbk:Obs TIME_PERIOD="2021-06-09" OBS_VALUE="1.6895" BBK_DIFF_A="0.054"/>
      <bbk:Obs TIME_PERIOD="2021-06-08" OBS_VALUE="1.6355" BBK_DIFF_A="0.18519"/>
      <bbk:Obs TIME_PERIOD="2021-06-07" OBS_VALUE="1.45031" BBK_DIFF_A="0.36495"/>
      <bbk:Obs TIME_PERIOD="2021-06-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-06-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-06-04" OBS_VALUE="1.08536" BBK_DIFF_A="-0.15099"/>
      <bbk:Obs TIME_PERIOD="2021-06-03" OBS_VALUE="1.23635" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-06-02" OBS_VALUE="1.23635" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-06-01" OBS_VALUE="1.23635" BBK_DIFF_A="0.20315"/>
      <bbk:Obs TIME_PERIOD="2021-05-31" OBS_VALUE="1.0332" BBK_DIFF_A="0.87842"/>
      <bbk:Obs TIME_PERIOD="2021-05-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-05-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-05-28" OBS_VALUE="0.15478" BBK_DIFF_A="-0.00237"/>
      <bbk:Obs TIME_PERIOD="2021-05-27" OBS_VALUE="0.15715" BBK_DIFF_A="0.0054"/>
      <bbk:Obs TIME_PERIOD="2021-05-26" OBS_VALUE="0.15175" BBK_DIFF_A="0.00194"/>
      <bbk:Obs TIME_PERIOD="2021-05-25" OBS_VALUE="0.14981" BBK_DIFF_A="-0.00891"/>
      <bbk:Obs TIME_PERIOD="2021-05-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-05-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-05-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-05-21" OBS_VALUE="0.15872" BBK_DIFF_A="0.00551"/>
      <bbk:Obs TIME_PERIOD="2021-05-20" OBS_VALUE="0.15321" BBK_DIFF_A="-0.00716"/>
      <bbk:Obs TIME_PERIOD="2021-05-19" OBS_VALUE="0.16037" BBK_DIFF_A="-0.01572"/>
      <bbk:Obs TIME_PERIOD="2021-05-18" OBS_VALUE="0.17609" BBK_DIFF_A="0.02893"/>
      <bbk:Obs TIME_PERIOD="2021-05-17" OBS_VALUE="0.14716" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-05-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-05-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-05-14" OBS_VALUE="0.14716" BBK_DIFF_A="0.00883"/>
      <bbk:Obs TIME_PERIOD="2021-05-13" OBS_VALUE="0.13833" BBK_DIFF_A="-0.02356"/>
      <bbk:Obs TIME_PERIOD="2021-05-12" OBS_VALUE="0.16189" BBK_DIFF_A="-0.00397"/>
      <bbk:Obs TIME_PERIOD="2021-05-11" OBS_VALUE="0.16586" BBK_DIFF_A="0.01289"/>
      <bbk:Obs TIME_PERIOD="2021-05-10" OBS_VALUE="0.15297" BBK_DIFF_A="-0.01382"/>
      <bbk:Obs TIME_PERIOD="2021-05-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-05-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-05-07" OBS_VALUE="0.16679" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-05-06" OBS_VALUE="0.16679" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-05-05" OBS_VALUE="0.16679" BBK_DIFF_A="-3.5E-4"/>
      <bbk:Obs TIME_PERIOD="2021-05-04" OBS_VALUE="0.16714" BBK_DIFF_A="-0.0014"/>
      <bbk:Obs TIME_PERIOD="2021-05-03" OBS_VALUE="0.16854" BBK_DIFF_A="-0.00304"/>
      <bbk:Obs TIME_PERIOD="2021-05-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-04-30" OBS_VALUE="0.17158" BBK_DIFF_A="-0.01179"/>
      <bbk:Obs TIME_PERIOD="2021-04-29" OBS_VALUE="0.18337" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-04-28" OBS_VALUE="0.18337" BBK_DIFF_A="-0.00645"/>
      <bbk:Obs TIME_PERIOD="2021-04-27" OBS_VALUE="0.18982" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-04-26" OBS_VALUE="0.18982" BBK_DIFF_A="-0.00488"/>
      <bbk:Obs TIME_PERIOD="2021-04-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-04-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-04-23" OBS_VALUE="0.1947" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-04-22" OBS_VALUE="0.1947" BBK_DIFF_A="0.00504"/>
      <bbk:Obs TIME_PERIOD="2021-04-21" OBS_VALUE="0.18966" BBK_DIFF_A="0.00132"/>
      <bbk:Obs TIME_PERIOD="2021-04-20" OBS_VALUE="0.18834" BBK_DIFF_A="-0.01258"/>
      <bbk:Obs TIME_PERIOD="2021-04-19" OBS_VALUE="0.20092" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-04-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-04-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-04-16" OBS_VALUE="0.20092" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-04-15" OBS_VALUE="0.20092" BBK_DIFF_A="-0.00911"/>
      <bbk:Obs TIME_PERIOD="2021-04-14" OBS_VALUE="0.21003" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-04-13" OBS_VALUE="0.21003" BBK_DIFF_A="-0.00478"/>
      <bbk:Obs TIME_PERIOD="2021-04-12" OBS_VALUE="0.21481" BBK_DIFF_A="-0.00495"/>
      <bbk:Obs TIME_PERIOD="2021-04-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-04-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-04-09" OBS_VALUE="0.21976" BBK_DIFF_A="0.00688"/>
      <bbk:Obs TIME_PERIOD="2021-04-08" OBS_VALUE="0.21288" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-04-07" OBS_VALUE="0.21288" BBK_DIFF_A="-0.01574"/>
      <bbk:Obs TIME_PERIOD="2021-04-06" OBS_VALUE="0.22862" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-04-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-04-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-04-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-04-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-04-01" OBS_VALUE="0.22862" BBK_DIFF_A="0.0646"/>
      <bbk:Obs TIME_PERIOD="2021-03-31" OBS_VALUE="0.16402" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-03-30" OBS_VALUE="0.16402" BBK_DIFF_A="-0.00929"/>
      <bbk:Obs TIME_PERIOD="2021-03-29" OBS_VALUE="0.17331" BBK_DIFF_A="0.0034"/>
      <bbk:Obs TIME_PERIOD="2021-03-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-03-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-03-26" OBS_VALUE="0.16991" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-03-25" OBS_VALUE="0.16991" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-03-24" OBS_VALUE="0.16991" BBK_DIFF_A="-1.63827"/>
      <bbk:Obs TIME_PERIOD="2021-03-23" OBS_VALUE="1.80818" BBK_DIFF_A="0.01621"/>
      <bbk:Obs TIME_PERIOD="2021-03-22" OBS_VALUE="1.79197" BBK_DIFF_A="-0.08211"/>
      <bbk:Obs TIME_PERIOD="2021-03-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-03-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-03-19" OBS_VALUE="1.87408" BBK_DIFF_A="0.04169"/>
      <bbk:Obs TIME_PERIOD="2021-03-18" OBS_VALUE="1.83239" BBK_DIFF_A="0.0653"/>
      <bbk:Obs TIME_PERIOD="2021-03-17" OBS_VALUE="1.76709" BBK_DIFF_A="0.15187"/>
      <bbk:Obs TIME_PERIOD="2021-03-16" OBS_VALUE="1.61522" BBK_DIFF_A="0.4038"/>
      <bbk:Obs TIME_PERIOD="2021-03-15" OBS_VALUE="1.21142" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-03-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-03-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-03-12" OBS_VALUE="1.21142" BBK_DIFF_A="0.49029"/>
      <bbk:Obs TIME_PERIOD="2021-03-11" OBS_VALUE="0.72113" BBK_DIFF_A="-4.98675"/>
      <bbk:Obs TIME_PERIOD="2021-03-10" OBS_VALUE="5.70788" BBK_DIFF_A="4.72929"/>
      <bbk:Obs TIME_PERIOD="2021-03-09" OBS_VALUE="0.97859" BBK_DIFF_A="-0.29443"/>
      <bbk:Obs TIME_PERIOD="2021-03-08" OBS_VALUE="1.27302" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-03-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-03-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-03-05" OBS_VALUE="1.27302" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-03-04" OBS_VALUE="1.27302" BBK_DIFF_A="0.14494"/>
      <bbk:Obs TIME_PERIOD="2021-03-03" OBS_VALUE="1.12808" BBK_DIFF_A="-0.00271"/>
      <bbk:Obs TIME_PERIOD="2021-03-02" OBS_VALUE="1.13079" BBK_DIFF_A="0.14452"/>
      <bbk:Obs TIME_PERIOD="2021-03-01" OBS_VALUE="0.98627" BBK_DIFF_A="0.07839"/>
      <bbk:Obs TIME_PERIOD="2021-02-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-02-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-02-26" OBS_VALUE="0.90788" BBK_DIFF_A="0.12262"/>
      <bbk:Obs TIME_PERIOD="2021-02-25" OBS_VALUE="0.78526" BBK_DIFF_A="0.17546"/>
      <bbk:Obs TIME_PERIOD="2021-02-24" OBS_VALUE="0.6098" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-02-23" OBS_VALUE="0.6098" BBK_DIFF_A="0.59438"/>
      <bbk:Obs TIME_PERIOD="2021-02-22" OBS_VALUE="0.01542" BBK_DIFF_A="-1.13732"/>
      <bbk:Obs TIME_PERIOD="2021-02-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-02-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-02-19" OBS_VALUE="1.15274" BBK_DIFF_A="0.02486"/>
      <bbk:Obs TIME_PERIOD="2021-02-18" OBS_VALUE="1.12788" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-02-17" OBS_VALUE="1.12788" BBK_DIFF_A="0.00809"/>
      <bbk:Obs TIME_PERIOD="2021-02-16" OBS_VALUE="1.11979" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-02-15" OBS_VALUE="1.11979" BBK_DIFF_A="0.13232"/>
      <bbk:Obs TIME_PERIOD="2021-02-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-02-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-02-12" OBS_VALUE="0.98747" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-02-11" OBS_VALUE="0.98747" BBK_DIFF_A="-6.83766"/>
      <bbk:Obs TIME_PERIOD="2021-02-10" OBS_VALUE="7.82513" BBK_DIFF_A="1.00413"/>
      <bbk:Obs TIME_PERIOD="2021-02-09" OBS_VALUE="6.821" BBK_DIFF_A="-2.60137"/>
      <bbk:Obs TIME_PERIOD="2021-02-08" OBS_VALUE="9.42237" BBK_DIFF_A="2.42536"/>
      <bbk:Obs TIME_PERIOD="2021-02-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-02-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-02-05" OBS_VALUE="6.99701" BBK_DIFF_A="-0.27046"/>
      <bbk:Obs TIME_PERIOD="2021-02-04" OBS_VALUE="7.26747" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-02-03" OBS_VALUE="7.26747" BBK_DIFF_A="0.35934"/>
      <bbk:Obs TIME_PERIOD="2021-02-02" OBS_VALUE="6.90813" BBK_DIFF_A="5.02848"/>
      <bbk:Obs TIME_PERIOD="2021-02-01" OBS_VALUE="1.87965" BBK_DIFF_A="1.83469"/>
      <bbk:Obs TIME_PERIOD="2021-01-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-01-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-01-29" OBS_VALUE="0.04496" BBK_DIFF_A="-0.09776"/>
      <bbk:Obs TIME_PERIOD="2021-01-28" OBS_VALUE="0.14272" BBK_DIFF_A="0.07136"/>
      <bbk:Obs TIME_PERIOD="2021-01-27" OBS_VALUE="0.07136" BBK_DIFF_A="-1.41257"/>
      <bbk:Obs TIME_PERIOD="2021-01-26" OBS_VALUE="1.48393" BBK_DIFF_A="-0.27889"/>
      <bbk:Obs TIME_PERIOD="2021-01-25" OBS_VALUE="1.76282" BBK_DIFF_A="0.04396"/>
      <bbk:Obs TIME_PERIOD="2021-01-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-01-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-01-22" OBS_VALUE="1.71886" BBK_DIFF_A="-0.00134"/>
      <bbk:Obs TIME_PERIOD="2021-01-21" OBS_VALUE="1.7202" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2021-01-20" OBS_VALUE="1.7202" BBK_DIFF_A="-2.27388"/>
      <bbk:Obs TIME_PERIOD="2021-01-19" OBS_VALUE="3.99408" BBK_DIFF_A="-26.00592"/>
      <bbk:Obs TIME_PERIOD="2021-01-18" OBS_VALUE="30.0" BBK_DIFF_A="29.9999"/>
      <bbk:Obs TIME_PERIOD="2021-01-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-01-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-01-15" OBS_VALUE="1.0E-4" BBK_DIFF_A="-2.11091"/>
      <bbk:Obs TIME_PERIOD="2021-01-14" OBS_VALUE="2.11101" BBK_DIFF_A="-2.78713"/>
      <bbk:Obs TIME_PERIOD="2021-01-13" OBS_VALUE="4.89814" BBK_DIFF_A="-0.31836"/>
      <bbk:Obs TIME_PERIOD="2021-01-12" OBS_VALUE="5.2165" BBK_DIFF_A="3.15657"/>
      <bbk:Obs TIME_PERIOD="2021-01-11" OBS_VALUE="2.05993" BBK_DIFF_A="1.37796"/>
      <bbk:Obs TIME_PERIOD="2021-01-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-01-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-01-08" OBS_VALUE="0.68197" BBK_DIFF_A="0.07929"/>
      <bbk:Obs TIME_PERIOD="2021-01-07" OBS_VALUE="0.60268" BBK_DIFF_A="0.0326"/>
      <bbk:Obs TIME_PERIOD="2021-01-06" OBS_VALUE="0.57008" BBK_DIFF_A="-0.22789"/>
      <bbk:Obs TIME_PERIOD="2021-01-05" OBS_VALUE="0.79797" BBK_DIFF_A="0.09189"/>
      <bbk:Obs TIME_PERIOD="2021-01-04" OBS_VALUE="0.70608" BBK_DIFF_A="0.03238"/>
      <bbk:Obs TIME_PERIOD="2021-01-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-01-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2021-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-12-30" OBS_VALUE="0.6737" BBK_DIFF_A="-0.02245"/>
      <bbk:Obs TIME_PERIOD="2020-12-29" OBS_VALUE="0.69615" BBK_DIFF_A="0.07577"/>
      <bbk:Obs TIME_PERIOD="2020-12-28" OBS_VALUE="0.62038" BBK_DIFF_A="-0.0506"/>
      <bbk:Obs TIME_PERIOD="2020-12-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-12-23" OBS_VALUE="0.67098" BBK_DIFF_A="-2.19317"/>
      <bbk:Obs TIME_PERIOD="2020-12-22" OBS_VALUE="2.86415" BBK_DIFF_A="-0.10157"/>
      <bbk:Obs TIME_PERIOD="2020-12-21" OBS_VALUE="2.96572" BBK_DIFF_A="0.05814"/>
      <bbk:Obs TIME_PERIOD="2020-12-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-12-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-12-18" OBS_VALUE="2.90758" BBK_DIFF_A="-0.06667"/>
      <bbk:Obs TIME_PERIOD="2020-12-17" OBS_VALUE="2.97425" BBK_DIFF_A="0.26867"/>
      <bbk:Obs TIME_PERIOD="2020-12-16" OBS_VALUE="2.70558" BBK_DIFF_A="-0.03229"/>
      <bbk:Obs TIME_PERIOD="2020-12-15" OBS_VALUE="2.73787" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-12-14" OBS_VALUE="2.73787" BBK_DIFF_A="-0.26961"/>
      <bbk:Obs TIME_PERIOD="2020-12-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-12-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-12-11" OBS_VALUE="3.00748" BBK_DIFF_A="0.06861"/>
      <bbk:Obs TIME_PERIOD="2020-12-10" OBS_VALUE="2.93887" BBK_DIFF_A="-0.03439"/>
      <bbk:Obs TIME_PERIOD="2020-12-09" OBS_VALUE="2.97326" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-12-08" OBS_VALUE="2.97326" BBK_DIFF_A="0.14284"/>
      <bbk:Obs TIME_PERIOD="2020-12-07" OBS_VALUE="2.83042" BBK_DIFF_A="0.04592"/>
      <bbk:Obs TIME_PERIOD="2020-12-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-12-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-12-04" OBS_VALUE="2.7845" BBK_DIFF_A="-0.02458"/>
      <bbk:Obs TIME_PERIOD="2020-12-03" OBS_VALUE="2.80908" BBK_DIFF_A="0.12575"/>
      <bbk:Obs TIME_PERIOD="2020-12-02" OBS_VALUE="2.68333" BBK_DIFF_A="-0.0396"/>
      <bbk:Obs TIME_PERIOD="2020-12-01" OBS_VALUE="2.72293" BBK_DIFF_A="-0.27028"/>
      <bbk:Obs TIME_PERIOD="2020-11-30" OBS_VALUE="2.99321" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-11-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-11-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-11-27" OBS_VALUE="2.99321" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-11-26" OBS_VALUE="2.99321" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-11-25" OBS_VALUE="2.99321" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-11-24" OBS_VALUE="2.99321" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-11-23" OBS_VALUE="2.99321" BBK_DIFF_A="-0.02228"/>
      <bbk:Obs TIME_PERIOD="2020-11-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-11-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-11-20" OBS_VALUE="3.01549" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-11-19" OBS_VALUE="3.01549" BBK_DIFF_A="-0.06315"/>
      <bbk:Obs TIME_PERIOD="2020-11-18" OBS_VALUE="3.07864" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-11-17" OBS_VALUE="3.07864" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-11-16" OBS_VALUE="3.07864" BBK_DIFF_A="0.09263"/>
      <bbk:Obs TIME_PERIOD="2020-11-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-11-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-11-13" OBS_VALUE="2.98601" BBK_DIFF_A="0.09379"/>
      <bbk:Obs TIME_PERIOD="2020-11-12" OBS_VALUE="2.89222" BBK_DIFF_A="0.0087"/>
      <bbk:Obs TIME_PERIOD="2020-11-11" OBS_VALUE="2.88352" BBK_DIFF_A="0.49252"/>
      <bbk:Obs TIME_PERIOD="2020-11-10" OBS_VALUE="2.391" BBK_DIFF_A="0.2076"/>
      <bbk:Obs TIME_PERIOD="2020-11-09" OBS_VALUE="2.1834" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-11-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-11-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-11-06" OBS_VALUE="2.1834" BBK_DIFF_A="-1.78721"/>
      <bbk:Obs TIME_PERIOD="2020-11-05" OBS_VALUE="3.97061" BBK_DIFF_A="0.93657"/>
      <bbk:Obs TIME_PERIOD="2020-11-04" OBS_VALUE="3.03404" BBK_DIFF_A="0.7575"/>
      <bbk:Obs TIME_PERIOD="2020-11-03" OBS_VALUE="2.27654" BBK_DIFF_A="0.93225"/>
      <bbk:Obs TIME_PERIOD="2020-11-02" OBS_VALUE="1.34429" BBK_DIFF_A="-0.4221"/>
      <bbk:Obs TIME_PERIOD="2020-11-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-10-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-10-30" OBS_VALUE="1.76639" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-10-29" OBS_VALUE="1.76639" BBK_DIFF_A="-2.43542"/>
      <bbk:Obs TIME_PERIOD="2020-10-28" OBS_VALUE="4.20181" BBK_DIFF_A="2.485"/>
      <bbk:Obs TIME_PERIOD="2020-10-27" OBS_VALUE="1.71681" BBK_DIFF_A="1.49434"/>
      <bbk:Obs TIME_PERIOD="2020-10-26" OBS_VALUE="0.22247" BBK_DIFF_A="0.00268"/>
      <bbk:Obs TIME_PERIOD="2020-10-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-10-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-10-23" OBS_VALUE="0.21979" BBK_DIFF_A="0.21969"/>
      <bbk:Obs TIME_PERIOD="2020-10-22" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-10-21" OBS_VALUE="1.0E-4" BBK_DIFF_A="-3.30753"/>
      <bbk:Obs TIME_PERIOD="2020-10-20" OBS_VALUE="3.30763" BBK_DIFF_A="-2.53148"/>
      <bbk:Obs TIME_PERIOD="2020-10-19" OBS_VALUE="5.83911" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-10-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-10-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-10-16" OBS_VALUE="5.83911" BBK_DIFF_A="3.62624"/>
      <bbk:Obs TIME_PERIOD="2020-10-15" OBS_VALUE="2.21287" BBK_DIFF_A="0.14342"/>
      <bbk:Obs TIME_PERIOD="2020-10-14" OBS_VALUE="2.06945" BBK_DIFF_A="-0.04683"/>
      <bbk:Obs TIME_PERIOD="2020-10-13" OBS_VALUE="2.11628" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-10-12" OBS_VALUE="2.11628" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-10-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-10-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-10-09" OBS_VALUE="2.11628" BBK_DIFF_A="0.38375"/>
      <bbk:Obs TIME_PERIOD="2020-10-08" OBS_VALUE="1.73253" BBK_DIFF_A="1.50024"/>
      <bbk:Obs TIME_PERIOD="2020-10-07" OBS_VALUE="0.23229" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-10-06" OBS_VALUE="0.23229" BBK_DIFF_A="0.01786"/>
      <bbk:Obs TIME_PERIOD="2020-10-05" OBS_VALUE="0.21443" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-10-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-10-02" OBS_VALUE="0.21443" BBK_DIFF_A="0.00213"/>
      <bbk:Obs TIME_PERIOD="2020-10-01" OBS_VALUE="0.2123" BBK_DIFF_A="0.17977"/>
      <bbk:Obs TIME_PERIOD="2020-09-30" OBS_VALUE="0.03253" BBK_DIFF_A="0.0107"/>
      <bbk:Obs TIME_PERIOD="2020-09-29" OBS_VALUE="0.02183" BBK_DIFF_A="0.01131"/>
      <bbk:Obs TIME_PERIOD="2020-09-28" OBS_VALUE="0.01052" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-09-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-09-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-09-25" OBS_VALUE="0.01052" BBK_DIFF_A="-0.00241"/>
      <bbk:Obs TIME_PERIOD="2020-09-24" OBS_VALUE="0.01293" BBK_DIFF_A="-0.00119"/>
      <bbk:Obs TIME_PERIOD="2020-09-23" OBS_VALUE="0.01412" BBK_DIFF_A="-0.00185"/>
      <bbk:Obs TIME_PERIOD="2020-09-22" OBS_VALUE="0.01597" BBK_DIFF_A="0.00277"/>
      <bbk:Obs TIME_PERIOD="2020-09-21" OBS_VALUE="0.0132" BBK_DIFF_A="0.00302"/>
      <bbk:Obs TIME_PERIOD="2020-09-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-09-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-09-18" OBS_VALUE="0.01018" BBK_DIFF_A="0.0043"/>
      <bbk:Obs TIME_PERIOD="2020-09-17" OBS_VALUE="0.00588" BBK_DIFF_A="-0.00198"/>
      <bbk:Obs TIME_PERIOD="2020-09-16" OBS_VALUE="0.00786" BBK_DIFF_A="0.00123"/>
      <bbk:Obs TIME_PERIOD="2020-09-15" OBS_VALUE="0.00663" BBK_DIFF_A="4.4E-4"/>
      <bbk:Obs TIME_PERIOD="2020-09-14" OBS_VALUE="0.00619" BBK_DIFF_A="-0.00309"/>
      <bbk:Obs TIME_PERIOD="2020-09-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-09-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-09-11" OBS_VALUE="0.00928" BBK_DIFF_A="-2.74701"/>
      <bbk:Obs TIME_PERIOD="2020-09-10" OBS_VALUE="2.75629" BBK_DIFF_A="-0.09801"/>
      <bbk:Obs TIME_PERIOD="2020-09-09" OBS_VALUE="2.8543" BBK_DIFF_A="0.01461"/>
      <bbk:Obs TIME_PERIOD="2020-09-08" OBS_VALUE="2.83969" BBK_DIFF_A="0.00703"/>
      <bbk:Obs TIME_PERIOD="2020-09-07" OBS_VALUE="2.83266" BBK_DIFF_A="0.01731"/>
      <bbk:Obs TIME_PERIOD="2020-09-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-09-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-09-04" OBS_VALUE="2.81535" BBK_DIFF_A="-0.01504"/>
      <bbk:Obs TIME_PERIOD="2020-09-03" OBS_VALUE="2.83039" BBK_DIFF_A="0.0426"/>
      <bbk:Obs TIME_PERIOD="2020-09-02" OBS_VALUE="2.78779" BBK_DIFF_A="0.48203"/>
      <bbk:Obs TIME_PERIOD="2020-09-01" OBS_VALUE="2.30576" BBK_DIFF_A="-0.01654"/>
      <bbk:Obs TIME_PERIOD="2020-08-31" OBS_VALUE="2.3223" BBK_DIFF_A="-0.01373"/>
      <bbk:Obs TIME_PERIOD="2020-08-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-08-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-08-28" OBS_VALUE="2.33603" BBK_DIFF_A="-0.05822"/>
      <bbk:Obs TIME_PERIOD="2020-08-27" OBS_VALUE="2.39425" BBK_DIFF_A="-0.25813"/>
      <bbk:Obs TIME_PERIOD="2020-08-26" OBS_VALUE="2.65238" BBK_DIFF_A="2.36052"/>
      <bbk:Obs TIME_PERIOD="2020-08-25" OBS_VALUE="0.29186" BBK_DIFF_A="0.19709"/>
      <bbk:Obs TIME_PERIOD="2020-08-24" OBS_VALUE="0.09477" BBK_DIFF_A="0.0067"/>
      <bbk:Obs TIME_PERIOD="2020-08-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-08-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-08-21" OBS_VALUE="0.08807" BBK_DIFF_A="0.00495"/>
      <bbk:Obs TIME_PERIOD="2020-08-20" OBS_VALUE="0.08312" BBK_DIFF_A="0.0186"/>
      <bbk:Obs TIME_PERIOD="2020-08-19" OBS_VALUE="0.06452" BBK_DIFF_A="0.03545"/>
      <bbk:Obs TIME_PERIOD="2020-08-18" OBS_VALUE="0.02907" BBK_DIFF_A="-0.04148"/>
      <bbk:Obs TIME_PERIOD="2020-08-17" OBS_VALUE="0.07055" BBK_DIFF_A="-0.00641"/>
      <bbk:Obs TIME_PERIOD="2020-08-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-08-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-08-14" OBS_VALUE="0.07696" BBK_DIFF_A="-0.01027"/>
      <bbk:Obs TIME_PERIOD="2020-08-13" OBS_VALUE="0.08723" BBK_DIFF_A="5.1E-4"/>
      <bbk:Obs TIME_PERIOD="2020-08-12" OBS_VALUE="0.08672" BBK_DIFF_A="0.00638"/>
      <bbk:Obs TIME_PERIOD="2020-08-11" OBS_VALUE="0.08034" BBK_DIFF_A="-0.02593"/>
      <bbk:Obs TIME_PERIOD="2020-08-10" OBS_VALUE="0.10627" BBK_DIFF_A="-0.00628"/>
      <bbk:Obs TIME_PERIOD="2020-08-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-08-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-08-07" OBS_VALUE="0.11255" BBK_DIFF_A="0.01212"/>
      <bbk:Obs TIME_PERIOD="2020-08-06" OBS_VALUE="0.10043" BBK_DIFF_A="0.011"/>
      <bbk:Obs TIME_PERIOD="2020-08-05" OBS_VALUE="0.08943" BBK_DIFF_A="-0.00813"/>
      <bbk:Obs TIME_PERIOD="2020-08-04" OBS_VALUE="0.09756" BBK_DIFF_A="0.00357"/>
      <bbk:Obs TIME_PERIOD="2020-08-03" OBS_VALUE="0.09399" BBK_DIFF_A="-0.00989"/>
      <bbk:Obs TIME_PERIOD="2020-08-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-08-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-07-31" OBS_VALUE="0.10388" BBK_DIFF_A="0.01606"/>
      <bbk:Obs TIME_PERIOD="2020-07-30" OBS_VALUE="0.08782" BBK_DIFF_A="-0.01734"/>
      <bbk:Obs TIME_PERIOD="2020-07-29" OBS_VALUE="0.10516" BBK_DIFF_A="-0.00711"/>
      <bbk:Obs TIME_PERIOD="2020-07-28" OBS_VALUE="0.11227" BBK_DIFF_A="-0.00696"/>
      <bbk:Obs TIME_PERIOD="2020-07-27" OBS_VALUE="0.11923" BBK_DIFF_A="0.01002"/>
      <bbk:Obs TIME_PERIOD="2020-07-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-07-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-07-24" OBS_VALUE="0.10921" BBK_DIFF_A="-0.01014"/>
      <bbk:Obs TIME_PERIOD="2020-07-23" OBS_VALUE="0.11935" BBK_DIFF_A="0.02225"/>
      <bbk:Obs TIME_PERIOD="2020-07-22" OBS_VALUE="0.0971" BBK_DIFF_A="-0.01921"/>
      <bbk:Obs TIME_PERIOD="2020-07-21" OBS_VALUE="0.11631" BBK_DIFF_A="0.00471"/>
      <bbk:Obs TIME_PERIOD="2020-07-20" OBS_VALUE="0.1116" BBK_DIFF_A="0.01362"/>
      <bbk:Obs TIME_PERIOD="2020-07-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-07-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-07-17" OBS_VALUE="0.09798" BBK_DIFF_A="-0.01469"/>
      <bbk:Obs TIME_PERIOD="2020-07-16" OBS_VALUE="0.11267" BBK_DIFF_A="-0.00865"/>
      <bbk:Obs TIME_PERIOD="2020-07-15" OBS_VALUE="0.12132" BBK_DIFF_A="-0.07874"/>
      <bbk:Obs TIME_PERIOD="2020-07-14" OBS_VALUE="0.20006" BBK_DIFF_A="0.01498"/>
      <bbk:Obs TIME_PERIOD="2020-07-13" OBS_VALUE="0.18508" BBK_DIFF_A="-1.3E-4"/>
      <bbk:Obs TIME_PERIOD="2020-07-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-07-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-07-10" OBS_VALUE="0.18521" BBK_DIFF_A="-8.3E-4"/>
      <bbk:Obs TIME_PERIOD="2020-07-09" OBS_VALUE="0.18604" BBK_DIFF_A="-0.00949"/>
      <bbk:Obs TIME_PERIOD="2020-07-08" OBS_VALUE="0.19553" BBK_DIFF_A="-3.6E-4"/>
      <bbk:Obs TIME_PERIOD="2020-07-07" OBS_VALUE="0.19589" BBK_DIFF_A="-0.00317"/>
      <bbk:Obs TIME_PERIOD="2020-07-06" OBS_VALUE="0.19906" BBK_DIFF_A="-0.00328"/>
      <bbk:Obs TIME_PERIOD="2020-07-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-07-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-07-03" OBS_VALUE="0.20234" BBK_DIFF_A="-0.00866"/>
      <bbk:Obs TIME_PERIOD="2020-07-02" OBS_VALUE="0.211" BBK_DIFF_A="-0.00476"/>
      <bbk:Obs TIME_PERIOD="2020-07-01" OBS_VALUE="0.21576" BBK_DIFF_A="0.00473"/>
      <bbk:Obs TIME_PERIOD="2020-06-30" OBS_VALUE="0.21103" BBK_DIFF_A="-0.01112"/>
      <bbk:Obs TIME_PERIOD="2020-06-29" OBS_VALUE="0.22215" BBK_DIFF_A="0.00359"/>
      <bbk:Obs TIME_PERIOD="2020-06-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-06-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-06-26" OBS_VALUE="0.21856" BBK_DIFF_A="0.00832"/>
      <bbk:Obs TIME_PERIOD="2020-06-25" OBS_VALUE="0.21024" BBK_DIFF_A="-0.00336"/>
      <bbk:Obs TIME_PERIOD="2020-06-24" OBS_VALUE="0.2136" BBK_DIFF_A="-0.01316"/>
      <bbk:Obs TIME_PERIOD="2020-06-23" OBS_VALUE="0.22676" BBK_DIFF_A="0.00435"/>
      <bbk:Obs TIME_PERIOD="2020-06-22" OBS_VALUE="0.22241" BBK_DIFF_A="-0.00392"/>
      <bbk:Obs TIME_PERIOD="2020-06-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-06-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-06-19" OBS_VALUE="0.22633" BBK_DIFF_A="0.0089"/>
      <bbk:Obs TIME_PERIOD="2020-06-18" OBS_VALUE="0.21743" BBK_DIFF_A="0.00239"/>
      <bbk:Obs TIME_PERIOD="2020-06-17" OBS_VALUE="0.21504" BBK_DIFF_A="0.00304"/>
      <bbk:Obs TIME_PERIOD="2020-06-16" OBS_VALUE="0.212" BBK_DIFF_A="-1.74559"/>
      <bbk:Obs TIME_PERIOD="2020-06-15" OBS_VALUE="1.95759" BBK_DIFF_A="-0.05175"/>
      <bbk:Obs TIME_PERIOD="2020-06-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-06-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-06-12" OBS_VALUE="2.00934" BBK_DIFF_A="0.02312"/>
      <bbk:Obs TIME_PERIOD="2020-06-11" OBS_VALUE="1.98622" BBK_DIFF_A="0.04702"/>
      <bbk:Obs TIME_PERIOD="2020-06-10" OBS_VALUE="1.9392" BBK_DIFF_A="-0.09781"/>
      <bbk:Obs TIME_PERIOD="2020-06-09" OBS_VALUE="2.03701" BBK_DIFF_A="-0.01955"/>
      <bbk:Obs TIME_PERIOD="2020-06-08" OBS_VALUE="2.05656" BBK_DIFF_A="-0.01203"/>
      <bbk:Obs TIME_PERIOD="2020-06-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-06-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-06-05" OBS_VALUE="2.06859" BBK_DIFF_A="-0.0106"/>
      <bbk:Obs TIME_PERIOD="2020-06-04" OBS_VALUE="2.07919" BBK_DIFF_A="0.00107"/>
      <bbk:Obs TIME_PERIOD="2020-06-03" OBS_VALUE="2.07812" BBK_DIFF_A="-0.25282"/>
      <bbk:Obs TIME_PERIOD="2020-06-02" OBS_VALUE="2.33094" BBK_DIFF_A="0.24829"/>
      <bbk:Obs TIME_PERIOD="2020-06-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-05-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-05-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-05-29" OBS_VALUE="2.08265" BBK_DIFF_A="0.09227"/>
      <bbk:Obs TIME_PERIOD="2020-05-28" OBS_VALUE="1.99038" BBK_DIFF_A="-0.07172"/>
      <bbk:Obs TIME_PERIOD="2020-05-27" OBS_VALUE="2.0621" BBK_DIFF_A="1.89304"/>
      <bbk:Obs TIME_PERIOD="2020-05-26" OBS_VALUE="0.16906" BBK_DIFF_A="9.5E-4"/>
      <bbk:Obs TIME_PERIOD="2020-05-25" OBS_VALUE="0.16811" BBK_DIFF_A="-0.00514"/>
      <bbk:Obs TIME_PERIOD="2020-05-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-05-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-05-22" OBS_VALUE="0.17325" BBK_DIFF_A="-0.00737"/>
      <bbk:Obs TIME_PERIOD="2020-05-21" OBS_VALUE="0.18062" BBK_DIFF_A="-1.14739"/>
      <bbk:Obs TIME_PERIOD="2020-05-20" OBS_VALUE="1.32801" BBK_DIFF_A="0.66406"/>
      <bbk:Obs TIME_PERIOD="2020-05-19" OBS_VALUE="0.66395" BBK_DIFF_A="0.22729"/>
      <bbk:Obs TIME_PERIOD="2020-05-18" OBS_VALUE="0.43666" BBK_DIFF_A="-0.02025"/>
      <bbk:Obs TIME_PERIOD="2020-05-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-05-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-05-15" OBS_VALUE="0.45691" BBK_DIFF_A="-0.00717"/>
      <bbk:Obs TIME_PERIOD="2020-05-14" OBS_VALUE="0.46408" BBK_DIFF_A="-0.08192"/>
      <bbk:Obs TIME_PERIOD="2020-05-13" OBS_VALUE="0.546" BBK_DIFF_A="0.16725"/>
      <bbk:Obs TIME_PERIOD="2020-05-12" OBS_VALUE="0.37875" BBK_DIFF_A="0.04479"/>
      <bbk:Obs TIME_PERIOD="2020-05-11" OBS_VALUE="0.33396" BBK_DIFF_A="0.06755"/>
      <bbk:Obs TIME_PERIOD="2020-05-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-05-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-05-08" OBS_VALUE="0.26641" BBK_DIFF_A="-0.0813"/>
      <bbk:Obs TIME_PERIOD="2020-05-07" OBS_VALUE="0.34771" BBK_DIFF_A="0.04984"/>
      <bbk:Obs TIME_PERIOD="2020-05-06" OBS_VALUE="0.29787" BBK_DIFF_A="-0.01913"/>
      <bbk:Obs TIME_PERIOD="2020-05-05" OBS_VALUE="0.317" BBK_DIFF_A="-13.64939"/>
      <bbk:Obs TIME_PERIOD="2020-05-04" OBS_VALUE="13.96639" BBK_DIFF_A="-0.44504"/>
      <bbk:Obs TIME_PERIOD="2020-05-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-05-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-04-30" OBS_VALUE="14.41143" BBK_DIFF_A="4.50067"/>
      <bbk:Obs TIME_PERIOD="2020-04-29" OBS_VALUE="9.91076" BBK_DIFF_A="0.85542"/>
      <bbk:Obs TIME_PERIOD="2020-04-28" OBS_VALUE="9.05534" BBK_DIFF_A="-0.05716"/>
      <bbk:Obs TIME_PERIOD="2020-04-27" OBS_VALUE="9.1125" BBK_DIFF_A="5.02396"/>
      <bbk:Obs TIME_PERIOD="2020-04-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-04-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-04-24" OBS_VALUE="4.08854" BBK_DIFF_A="1.11241"/>
      <bbk:Obs TIME_PERIOD="2020-04-23" OBS_VALUE="2.97613" BBK_DIFF_A="-2.78957"/>
      <bbk:Obs TIME_PERIOD="2020-04-22" OBS_VALUE="5.7657" BBK_DIFF_A="-0.49798"/>
      <bbk:Obs TIME_PERIOD="2020-04-21" OBS_VALUE="6.26368" BBK_DIFF_A="0.19586"/>
      <bbk:Obs TIME_PERIOD="2020-04-20" OBS_VALUE="6.06782" BBK_DIFF_A="-0.73773"/>
      <bbk:Obs TIME_PERIOD="2020-04-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-04-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-04-17" OBS_VALUE="6.80555" BBK_DIFF_A="4.04158"/>
      <bbk:Obs TIME_PERIOD="2020-04-16" OBS_VALUE="2.76397" BBK_DIFF_A="0.17651"/>
      <bbk:Obs TIME_PERIOD="2020-04-15" OBS_VALUE="2.58746" BBK_DIFF_A="-0.49957"/>
      <bbk:Obs TIME_PERIOD="2020-04-14" OBS_VALUE="3.08703" BBK_DIFF_A="0.59972"/>
      <bbk:Obs TIME_PERIOD="2020-04-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-04-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-04-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-04-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-04-09" OBS_VALUE="2.48731" BBK_DIFF_A="-0.21877"/>
      <bbk:Obs TIME_PERIOD="2020-04-08" OBS_VALUE="2.70608" BBK_DIFF_A="0.35268"/>
      <bbk:Obs TIME_PERIOD="2020-04-07" OBS_VALUE="2.3534" BBK_DIFF_A="-0.69673"/>
      <bbk:Obs TIME_PERIOD="2020-04-06" OBS_VALUE="3.05013" BBK_DIFF_A="2.13475"/>
      <bbk:Obs TIME_PERIOD="2020-04-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-04-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-04-03" OBS_VALUE="0.91538" BBK_DIFF_A="-0.17842"/>
      <bbk:Obs TIME_PERIOD="2020-04-02" OBS_VALUE="1.0938" BBK_DIFF_A="0.0569"/>
      <bbk:Obs TIME_PERIOD="2020-04-01" OBS_VALUE="1.0369" BBK_DIFF_A="0.3262"/>
      <bbk:Obs TIME_PERIOD="2020-03-31" OBS_VALUE="0.7107" BBK_DIFF_A="0.14078"/>
      <bbk:Obs TIME_PERIOD="2020-03-30" OBS_VALUE="0.56992" BBK_DIFF_A="-0.04581"/>
      <bbk:Obs TIME_PERIOD="2020-03-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-03-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-03-27" OBS_VALUE="0.61573" BBK_DIFF_A="-2.33579"/>
      <bbk:Obs TIME_PERIOD="2020-03-26" OBS_VALUE="2.95152" BBK_DIFF_A="0.53047"/>
      <bbk:Obs TIME_PERIOD="2020-03-25" OBS_VALUE="2.42105" BBK_DIFF_A="-1.0191"/>
      <bbk:Obs TIME_PERIOD="2020-03-24" OBS_VALUE="3.44015" BBK_DIFF_A="1.20015"/>
      <bbk:Obs TIME_PERIOD="2020-03-23" OBS_VALUE="2.24" BBK_DIFF_A="-15.63055"/>
      <bbk:Obs TIME_PERIOD="2020-03-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-03-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-03-20" OBS_VALUE="17.87055" BBK_DIFF_A="6.29582"/>
      <bbk:Obs TIME_PERIOD="2020-03-19" OBS_VALUE="11.57473" BBK_DIFF_A="10.29636"/>
      <bbk:Obs TIME_PERIOD="2020-03-18" OBS_VALUE="1.27837" BBK_DIFF_A="0.94735"/>
      <bbk:Obs TIME_PERIOD="2020-03-17" OBS_VALUE="0.33102" BBK_DIFF_A="-1.53962"/>
      <bbk:Obs TIME_PERIOD="2020-03-16" OBS_VALUE="1.87064" BBK_DIFF_A="-5.9978"/>
      <bbk:Obs TIME_PERIOD="2020-03-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-03-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-03-13" OBS_VALUE="7.86844" BBK_DIFF_A="-2.34014"/>
      <bbk:Obs TIME_PERIOD="2020-03-12" OBS_VALUE="10.20858" BBK_DIFF_A="8.2769"/>
      <bbk:Obs TIME_PERIOD="2020-03-11" OBS_VALUE="1.93168" BBK_DIFF_A="0.55462"/>
      <bbk:Obs TIME_PERIOD="2020-03-10" OBS_VALUE="1.37706" BBK_DIFF_A="-0.38242"/>
      <bbk:Obs TIME_PERIOD="2020-03-09" OBS_VALUE="1.75948" BBK_DIFF_A="-28.24052"/>
      <bbk:Obs TIME_PERIOD="2020-03-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-03-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-03-06" OBS_VALUE="30.0" BBK_DIFF_A="1.72392"/>
      <bbk:Obs TIME_PERIOD="2020-03-05" OBS_VALUE="28.27608" BBK_DIFF_A="5.24021"/>
      <bbk:Obs TIME_PERIOD="2020-03-04" OBS_VALUE="23.03587" BBK_DIFF_A="-6.96413"/>
      <bbk:Obs TIME_PERIOD="2020-03-03" OBS_VALUE="30.0" BBK_DIFF_A="16.18496"/>
      <bbk:Obs TIME_PERIOD="2020-03-02" OBS_VALUE="13.81504" BBK_DIFF_A="4.98216"/>
      <bbk:Obs TIME_PERIOD="2020-03-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-02-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-02-28" OBS_VALUE="8.83288" BBK_DIFF_A="-3.07317"/>
      <bbk:Obs TIME_PERIOD="2020-02-27" OBS_VALUE="11.90605" BBK_DIFF_A="0.18327"/>
      <bbk:Obs TIME_PERIOD="2020-02-26" OBS_VALUE="11.72278" BBK_DIFF_A="0.9987"/>
      <bbk:Obs TIME_PERIOD="2020-02-25" OBS_VALUE="10.72408" BBK_DIFF_A="9.76629"/>
      <bbk:Obs TIME_PERIOD="2020-02-24" OBS_VALUE="0.95779" BBK_DIFF_A="-2.00773"/>
      <bbk:Obs TIME_PERIOD="2020-02-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-02-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-02-21" OBS_VALUE="2.96552" BBK_DIFF_A="0.03494"/>
      <bbk:Obs TIME_PERIOD="2020-02-20" OBS_VALUE="2.93058" BBK_DIFF_A="-0.36154"/>
      <bbk:Obs TIME_PERIOD="2020-02-19" OBS_VALUE="3.29212" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-02-18" OBS_VALUE="3.29212" BBK_DIFF_A="-0.05922"/>
      <bbk:Obs TIME_PERIOD="2020-02-17" OBS_VALUE="3.35134" BBK_DIFF_A="3.20696"/>
      <bbk:Obs TIME_PERIOD="2020-02-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-02-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-02-14" OBS_VALUE="0.14438" BBK_DIFF_A="-0.94142"/>
      <bbk:Obs TIME_PERIOD="2020-02-13" OBS_VALUE="1.0858" BBK_DIFF_A="-0.72788"/>
      <bbk:Obs TIME_PERIOD="2020-02-12" OBS_VALUE="1.81368" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-02-11" OBS_VALUE="1.81368" BBK_DIFF_A="0.33952"/>
      <bbk:Obs TIME_PERIOD="2020-02-10" OBS_VALUE="1.47416" BBK_DIFF_A="-0.11667"/>
      <bbk:Obs TIME_PERIOD="2020-02-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-02-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-02-07" OBS_VALUE="1.59083" BBK_DIFF_A="-2.43878"/>
      <bbk:Obs TIME_PERIOD="2020-02-06" OBS_VALUE="4.02961" BBK_DIFF_A="-0.73609"/>
      <bbk:Obs TIME_PERIOD="2020-02-05" OBS_VALUE="4.7657" BBK_DIFF_A="0.15071"/>
      <bbk:Obs TIME_PERIOD="2020-02-04" OBS_VALUE="4.61499" BBK_DIFF_A="0.06423"/>
      <bbk:Obs TIME_PERIOD="2020-02-03" OBS_VALUE="4.55076" BBK_DIFF_A="0.08959"/>
      <bbk:Obs TIME_PERIOD="2020-02-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-02-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-01-31" OBS_VALUE="4.46117" BBK_DIFF_A="0.40366"/>
      <bbk:Obs TIME_PERIOD="2020-01-30" OBS_VALUE="4.05751" BBK_DIFF_A="0.29607"/>
      <bbk:Obs TIME_PERIOD="2020-01-29" OBS_VALUE="3.76144" BBK_DIFF_A="-0.20044"/>
      <bbk:Obs TIME_PERIOD="2020-01-28" OBS_VALUE="3.96188" BBK_DIFF_A="1.17776"/>
      <bbk:Obs TIME_PERIOD="2020-01-27" OBS_VALUE="2.78412" BBK_DIFF_A="0.99835"/>
      <bbk:Obs TIME_PERIOD="2020-01-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-01-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-01-24" OBS_VALUE="1.78577" BBK_DIFF_A="0.33773"/>
      <bbk:Obs TIME_PERIOD="2020-01-23" OBS_VALUE="1.44804" BBK_DIFF_A="-0.74344"/>
      <bbk:Obs TIME_PERIOD="2020-01-22" OBS_VALUE="2.19148" BBK_DIFF_A="2.19138"/>
      <bbk:Obs TIME_PERIOD="2020-01-21" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-01-20" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-01-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-01-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-01-17" OBS_VALUE="1.0E-4" BBK_DIFF_A="-3.67364"/>
      <bbk:Obs TIME_PERIOD="2020-01-16" OBS_VALUE="3.67374" BBK_DIFF_A="-0.77945"/>
      <bbk:Obs TIME_PERIOD="2020-01-15" OBS_VALUE="4.45319" BBK_DIFF_A="3.75611"/>
      <bbk:Obs TIME_PERIOD="2020-01-14" OBS_VALUE="0.69708" BBK_DIFF_A="-2.78586"/>
      <bbk:Obs TIME_PERIOD="2020-01-13" OBS_VALUE="3.48294" BBK_DIFF_A="3.25732"/>
      <bbk:Obs TIME_PERIOD="2020-01-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-01-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-01-10" OBS_VALUE="0.22562" BBK_DIFF_A="0.22552"/>
      <bbk:Obs TIME_PERIOD="2020-01-09" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-01-08" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2020-01-07" OBS_VALUE="1.0E-4" BBK_DIFF_A="-3.97065"/>
      <bbk:Obs TIME_PERIOD="2020-01-06" OBS_VALUE="3.97075" BBK_DIFF_A="2.05705"/>
      <bbk:Obs TIME_PERIOD="2020-01-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-01-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2020-01-03" OBS_VALUE="1.9137" BBK_DIFF_A="0.26814"/>
      <bbk:Obs TIME_PERIOD="2020-01-02" OBS_VALUE="1.64556" BBK_DIFF_A="-1.1554"/>
      <bbk:Obs TIME_PERIOD="2020-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-12-30" OBS_VALUE="2.80096" BBK_DIFF_A="0.18134"/>
      <bbk:Obs TIME_PERIOD="2019-12-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-12-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-12-27" OBS_VALUE="2.61962" BBK_DIFF_A="0.00152"/>
      <bbk:Obs TIME_PERIOD="2019-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-12-23" OBS_VALUE="2.6181" BBK_DIFF_A="-0.03643"/>
      <bbk:Obs TIME_PERIOD="2019-12-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-12-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-12-20" OBS_VALUE="2.65453" BBK_DIFF_A="0.00289"/>
      <bbk:Obs TIME_PERIOD="2019-12-19" OBS_VALUE="2.65164" BBK_DIFF_A="-6.00336"/>
      <bbk:Obs TIME_PERIOD="2019-12-18" OBS_VALUE="8.655" BBK_DIFF_A="-0.41152"/>
      <bbk:Obs TIME_PERIOD="2019-12-17" OBS_VALUE="9.06652" BBK_DIFF_A="5.77427"/>
      <bbk:Obs TIME_PERIOD="2019-12-16" OBS_VALUE="3.29225" BBK_DIFF_A="0.32441"/>
      <bbk:Obs TIME_PERIOD="2019-12-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-12-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-12-13" OBS_VALUE="2.96784" BBK_DIFF_A="1.16642"/>
      <bbk:Obs TIME_PERIOD="2019-12-12" OBS_VALUE="1.80142" BBK_DIFF_A="-0.42234"/>
      <bbk:Obs TIME_PERIOD="2019-12-11" OBS_VALUE="2.22376" BBK_DIFF_A="0.03205"/>
      <bbk:Obs TIME_PERIOD="2019-12-10" OBS_VALUE="2.19171" BBK_DIFF_A="-0.10115"/>
      <bbk:Obs TIME_PERIOD="2019-12-09" OBS_VALUE="2.29286" BBK_DIFF_A="-0.08233"/>
      <bbk:Obs TIME_PERIOD="2019-12-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-12-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-12-06" OBS_VALUE="2.37519" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-12-05" OBS_VALUE="2.37519" BBK_DIFF_A="-0.08058"/>
      <bbk:Obs TIME_PERIOD="2019-12-04" OBS_VALUE="2.45577" BBK_DIFF_A="0.14084"/>
      <bbk:Obs TIME_PERIOD="2019-12-03" OBS_VALUE="2.31493" BBK_DIFF_A="-0.06567"/>
      <bbk:Obs TIME_PERIOD="2019-12-02" OBS_VALUE="2.3806" BBK_DIFF_A="1.26113"/>
      <bbk:Obs TIME_PERIOD="2019-12-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-11-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-11-29" OBS_VALUE="1.11947" BBK_DIFF_A="0.85211"/>
      <bbk:Obs TIME_PERIOD="2019-11-28" OBS_VALUE="0.26736" BBK_DIFF_A="-0.05448"/>
      <bbk:Obs TIME_PERIOD="2019-11-27" OBS_VALUE="0.32184" BBK_DIFF_A="-3.05407"/>
      <bbk:Obs TIME_PERIOD="2019-11-26" OBS_VALUE="3.37591" BBK_DIFF_A="-0.11952"/>
      <bbk:Obs TIME_PERIOD="2019-11-25" OBS_VALUE="3.49543" BBK_DIFF_A="0.03323"/>
      <bbk:Obs TIME_PERIOD="2019-11-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-11-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-11-22" OBS_VALUE="3.4622" BBK_DIFF_A="-0.35222"/>
      <bbk:Obs TIME_PERIOD="2019-11-21" OBS_VALUE="3.81442" BBK_DIFF_A="0.37927"/>
      <bbk:Obs TIME_PERIOD="2019-11-20" OBS_VALUE="3.43515" BBK_DIFF_A="0.34916"/>
      <bbk:Obs TIME_PERIOD="2019-11-19" OBS_VALUE="3.08599" BBK_DIFF_A="0.05198"/>
      <bbk:Obs TIME_PERIOD="2019-11-18" OBS_VALUE="3.03401" BBK_DIFF_A="0.10676"/>
      <bbk:Obs TIME_PERIOD="2019-11-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-11-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-11-15" OBS_VALUE="2.92725" BBK_DIFF_A="-0.1661"/>
      <bbk:Obs TIME_PERIOD="2019-11-14" OBS_VALUE="3.09335" BBK_DIFF_A="-0.14811"/>
      <bbk:Obs TIME_PERIOD="2019-11-13" OBS_VALUE="3.24146" BBK_DIFF_A="3.24136"/>
      <bbk:Obs TIME_PERIOD="2019-11-12" OBS_VALUE="1.0E-4" BBK_DIFF_A="-3.38522"/>
      <bbk:Obs TIME_PERIOD="2019-11-11" OBS_VALUE="3.38532" BBK_DIFF_A="-0.14019"/>
      <bbk:Obs TIME_PERIOD="2019-11-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-11-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-11-08" OBS_VALUE="3.52551" BBK_DIFF_A="0.15688"/>
      <bbk:Obs TIME_PERIOD="2019-11-07" OBS_VALUE="3.36863" BBK_DIFF_A="0.13777"/>
      <bbk:Obs TIME_PERIOD="2019-11-06" OBS_VALUE="3.23086" BBK_DIFF_A="0.0462"/>
      <bbk:Obs TIME_PERIOD="2019-11-05" OBS_VALUE="3.18466" BBK_DIFF_A="0.02266"/>
      <bbk:Obs TIME_PERIOD="2019-11-04" OBS_VALUE="3.162" BBK_DIFF_A="-0.66813"/>
      <bbk:Obs TIME_PERIOD="2019-11-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-11-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-11-01" OBS_VALUE="3.83013" BBK_DIFF_A="-8.20225"/>
      <bbk:Obs TIME_PERIOD="2019-10-31" OBS_VALUE="12.03238" BBK_DIFF_A="12.00808"/>
      <bbk:Obs TIME_PERIOD="2019-10-30" OBS_VALUE="0.0243" BBK_DIFF_A="-0.06715"/>
      <bbk:Obs TIME_PERIOD="2019-10-29" OBS_VALUE="0.09145" BBK_DIFF_A="-1.37174"/>
      <bbk:Obs TIME_PERIOD="2019-10-28" OBS_VALUE="1.46319" BBK_DIFF_A="0.6936"/>
      <bbk:Obs TIME_PERIOD="2019-10-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-10-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-10-25" OBS_VALUE="0.76959" BBK_DIFF_A="-1.18984"/>
      <bbk:Obs TIME_PERIOD="2019-10-24" OBS_VALUE="1.95943" BBK_DIFF_A="-10.87171"/>
      <bbk:Obs TIME_PERIOD="2019-10-23" OBS_VALUE="12.83114" BBK_DIFF_A="9.60253"/>
      <bbk:Obs TIME_PERIOD="2019-10-22" OBS_VALUE="3.22861" BBK_DIFF_A="2.90699"/>
      <bbk:Obs TIME_PERIOD="2019-10-21" OBS_VALUE="0.32162" BBK_DIFF_A="-0.00305"/>
      <bbk:Obs TIME_PERIOD="2019-10-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-10-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-10-18" OBS_VALUE="0.32467" BBK_DIFF_A="-3.27978"/>
      <bbk:Obs TIME_PERIOD="2019-10-17" OBS_VALUE="3.60445" BBK_DIFF_A="1.3252"/>
      <bbk:Obs TIME_PERIOD="2019-10-16" OBS_VALUE="2.27925" BBK_DIFF_A="1.54458"/>
      <bbk:Obs TIME_PERIOD="2019-10-15" OBS_VALUE="0.73467" BBK_DIFF_A="0.73377"/>
      <bbk:Obs TIME_PERIOD="2019-10-14" OBS_VALUE="9.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-10-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-10-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-10-11" OBS_VALUE="9.0E-4" BBK_DIFF_A="-9.6E-4"/>
      <bbk:Obs TIME_PERIOD="2019-10-10" OBS_VALUE="0.00186" BBK_DIFF_A="-3.1E-4"/>
      <bbk:Obs TIME_PERIOD="2019-10-09" OBS_VALUE="0.00217" BBK_DIFF_A="2.1E-4"/>
      <bbk:Obs TIME_PERIOD="2019-10-08" OBS_VALUE="0.00196" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-10-07" OBS_VALUE="0.00196" BBK_DIFF_A="1.2E-4"/>
      <bbk:Obs TIME_PERIOD="2019-10-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-10-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-10-04" OBS_VALUE="0.00184" BBK_DIFF_A="-0.26136"/>
      <bbk:Obs TIME_PERIOD="2019-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-10-02" OBS_VALUE="0.2632" BBK_DIFF_A="-0.0043"/>
      <bbk:Obs TIME_PERIOD="2019-10-01" OBS_VALUE="0.2675" BBK_DIFF_A="-0.01515"/>
      <bbk:Obs TIME_PERIOD="2019-09-30" OBS_VALUE="0.28265" BBK_DIFF_A="-0.00487"/>
      <bbk:Obs TIME_PERIOD="2019-09-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-09-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-09-27" OBS_VALUE="0.28752" BBK_DIFF_A="0.28158"/>
      <bbk:Obs TIME_PERIOD="2019-09-26" OBS_VALUE="0.00594" BBK_DIFF_A="0.00395"/>
      <bbk:Obs TIME_PERIOD="2019-09-25" OBS_VALUE="0.00199" BBK_DIFF_A="-0.0031"/>
      <bbk:Obs TIME_PERIOD="2019-09-24" OBS_VALUE="0.00509" BBK_DIFF_A="-0.00118"/>
      <bbk:Obs TIME_PERIOD="2019-09-23" OBS_VALUE="0.00627" BBK_DIFF_A="0.00417"/>
      <bbk:Obs TIME_PERIOD="2019-09-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-09-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-09-20" OBS_VALUE="0.0021" BBK_DIFF_A="-0.0045"/>
      <bbk:Obs TIME_PERIOD="2019-09-19" OBS_VALUE="0.0066" BBK_DIFF_A="-0.00705"/>
      <bbk:Obs TIME_PERIOD="2019-09-18" OBS_VALUE="0.01365" BBK_DIFF_A="0.00322"/>
      <bbk:Obs TIME_PERIOD="2019-09-17" OBS_VALUE="0.01043" BBK_DIFF_A="-0.00748"/>
      <bbk:Obs TIME_PERIOD="2019-09-16" OBS_VALUE="0.01791" BBK_DIFF_A="6.6E-4"/>
      <bbk:Obs TIME_PERIOD="2019-09-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-09-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-09-13" OBS_VALUE="0.01725" BBK_DIFF_A="-0.01067"/>
      <bbk:Obs TIME_PERIOD="2019-09-12" OBS_VALUE="0.02792" BBK_DIFF_A="-0.36031"/>
      <bbk:Obs TIME_PERIOD="2019-09-11" OBS_VALUE="0.38823" BBK_DIFF_A="-3.38801"/>
      <bbk:Obs TIME_PERIOD="2019-09-10" OBS_VALUE="3.77624" BBK_DIFF_A="-0.19246"/>
      <bbk:Obs TIME_PERIOD="2019-09-09" OBS_VALUE="3.9687" BBK_DIFF_A="0.2777"/>
      <bbk:Obs TIME_PERIOD="2019-09-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-09-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-09-06" OBS_VALUE="3.691" BBK_DIFF_A="0.37459"/>
      <bbk:Obs TIME_PERIOD="2019-09-05" OBS_VALUE="3.31641" BBK_DIFF_A="-11.83904"/>
      <bbk:Obs TIME_PERIOD="2019-09-04" OBS_VALUE="15.15545" BBK_DIFF_A="3.27813"/>
      <bbk:Obs TIME_PERIOD="2019-09-03" OBS_VALUE="11.87732" BBK_DIFF_A="-2.66322"/>
      <bbk:Obs TIME_PERIOD="2019-09-02" OBS_VALUE="14.54054" BBK_DIFF_A="1.96743"/>
      <bbk:Obs TIME_PERIOD="2019-09-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-08-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-08-30" OBS_VALUE="12.57311" BBK_DIFF_A="-0.87459"/>
      <bbk:Obs TIME_PERIOD="2019-08-29" OBS_VALUE="13.4477" BBK_DIFF_A="1.44968"/>
      <bbk:Obs TIME_PERIOD="2019-08-28" OBS_VALUE="11.99802" BBK_DIFF_A="-0.04908"/>
      <bbk:Obs TIME_PERIOD="2019-08-27" OBS_VALUE="12.0471" BBK_DIFF_A="1.03896"/>
      <bbk:Obs TIME_PERIOD="2019-08-26" OBS_VALUE="11.00814" BBK_DIFF_A="0.46255"/>
      <bbk:Obs TIME_PERIOD="2019-08-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-08-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-08-23" OBS_VALUE="10.54559" BBK_DIFF_A="0.02839"/>
      <bbk:Obs TIME_PERIOD="2019-08-22" OBS_VALUE="10.5172" BBK_DIFF_A="4.97781"/>
      <bbk:Obs TIME_PERIOD="2019-08-21" OBS_VALUE="5.53939" BBK_DIFF_A="2.2644"/>
      <bbk:Obs TIME_PERIOD="2019-08-20" OBS_VALUE="3.27499" BBK_DIFF_A="1.03094"/>
      <bbk:Obs TIME_PERIOD="2019-08-19" OBS_VALUE="2.24405" BBK_DIFF_A="0.6789"/>
      <bbk:Obs TIME_PERIOD="2019-08-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-08-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-08-16" OBS_VALUE="1.56515" BBK_DIFF_A="-1.32338"/>
      <bbk:Obs TIME_PERIOD="2019-08-15" OBS_VALUE="2.88853" BBK_DIFF_A="2.87071"/>
      <bbk:Obs TIME_PERIOD="2019-08-14" OBS_VALUE="0.01782" BBK_DIFF_A="-0.00965"/>
      <bbk:Obs TIME_PERIOD="2019-08-13" OBS_VALUE="0.02747" BBK_DIFF_A="0.00869"/>
      <bbk:Obs TIME_PERIOD="2019-08-12" OBS_VALUE="0.01878" BBK_DIFF_A="-0.99384"/>
      <bbk:Obs TIME_PERIOD="2019-08-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-08-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-08-09" OBS_VALUE="1.01262" BBK_DIFF_A="0.98938"/>
      <bbk:Obs TIME_PERIOD="2019-08-08" OBS_VALUE="0.02324" BBK_DIFF_A="-0.17724"/>
      <bbk:Obs TIME_PERIOD="2019-08-07" OBS_VALUE="0.20048" BBK_DIFF_A="0.06305"/>
      <bbk:Obs TIME_PERIOD="2019-08-06" OBS_VALUE="0.13743" BBK_DIFF_A="0.01501"/>
      <bbk:Obs TIME_PERIOD="2019-08-05" OBS_VALUE="0.12242" BBK_DIFF_A="0.00545"/>
      <bbk:Obs TIME_PERIOD="2019-08-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-08-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-08-02" OBS_VALUE="0.11697" BBK_DIFF_A="-0.02362"/>
      <bbk:Obs TIME_PERIOD="2019-08-01" OBS_VALUE="0.14059" BBK_DIFF_A="-0.27533"/>
      <bbk:Obs TIME_PERIOD="2019-07-31" OBS_VALUE="0.41592" BBK_DIFF_A="0.02129"/>
      <bbk:Obs TIME_PERIOD="2019-07-30" OBS_VALUE="0.39463" BBK_DIFF_A="-0.03327"/>
      <bbk:Obs TIME_PERIOD="2019-07-29" OBS_VALUE="0.4279" BBK_DIFF_A="-2.72661"/>
      <bbk:Obs TIME_PERIOD="2019-07-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-07-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-07-26" OBS_VALUE="3.15451" BBK_DIFF_A="0.03726"/>
      <bbk:Obs TIME_PERIOD="2019-07-25" OBS_VALUE="3.11725" BBK_DIFF_A="-0.31223"/>
      <bbk:Obs TIME_PERIOD="2019-07-24" OBS_VALUE="3.42948" BBK_DIFF_A="3.42122"/>
      <bbk:Obs TIME_PERIOD="2019-07-23" OBS_VALUE="0.00826" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-07-22" OBS_VALUE="0.00826" BBK_DIFF_A="-0.12397"/>
      <bbk:Obs TIME_PERIOD="2019-07-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-07-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-07-19" OBS_VALUE="0.13223" BBK_DIFF_A="-3.25245"/>
      <bbk:Obs TIME_PERIOD="2019-07-18" OBS_VALUE="3.38468" BBK_DIFF_A="0.39844"/>
      <bbk:Obs TIME_PERIOD="2019-07-17" OBS_VALUE="2.98624" BBK_DIFF_A="2.97621"/>
      <bbk:Obs TIME_PERIOD="2019-07-16" OBS_VALUE="0.01003" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-07-15" OBS_VALUE="0.01003" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-07-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-07-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-07-12" OBS_VALUE="0.01003" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-07-11" OBS_VALUE="0.01003" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-07-10" OBS_VALUE="0.01003" BBK_DIFF_A="-0.15044"/>
      <bbk:Obs TIME_PERIOD="2019-07-09" OBS_VALUE="0.16047" BBK_DIFF_A="-0.0782"/>
      <bbk:Obs TIME_PERIOD="2019-07-08" OBS_VALUE="0.23867" BBK_DIFF_A="-1.91543"/>
      <bbk:Obs TIME_PERIOD="2019-07-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-07-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-07-05" OBS_VALUE="2.1541" BBK_DIFF_A="1.44419"/>
      <bbk:Obs TIME_PERIOD="2019-07-04" OBS_VALUE="0.70991" BBK_DIFF_A="0.55555"/>
      <bbk:Obs TIME_PERIOD="2019-07-03" OBS_VALUE="0.15436" BBK_DIFF_A="-0.0149"/>
      <bbk:Obs TIME_PERIOD="2019-07-02" OBS_VALUE="0.16926" BBK_DIFF_A="0.00538"/>
      <bbk:Obs TIME_PERIOD="2019-07-01" OBS_VALUE="0.16388" BBK_DIFF_A="0.01654"/>
      <bbk:Obs TIME_PERIOD="2019-06-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-06-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-06-28" OBS_VALUE="0.14734" BBK_DIFF_A="-4.75972"/>
      <bbk:Obs TIME_PERIOD="2019-06-27" OBS_VALUE="4.90706" BBK_DIFF_A="2.04206"/>
      <bbk:Obs TIME_PERIOD="2019-06-26" OBS_VALUE="2.865" BBK_DIFF_A="2.8079"/>
      <bbk:Obs TIME_PERIOD="2019-06-25" OBS_VALUE="0.0571" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-06-24" OBS_VALUE="0.0571" BBK_DIFF_A="-2.01462"/>
      <bbk:Obs TIME_PERIOD="2019-06-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-06-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-06-21" OBS_VALUE="2.07172" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-06-20" OBS_VALUE="2.07172" BBK_DIFF_A="1.95721"/>
      <bbk:Obs TIME_PERIOD="2019-06-19" OBS_VALUE="0.11451" BBK_DIFF_A="-3.13725"/>
      <bbk:Obs TIME_PERIOD="2019-06-18" OBS_VALUE="3.25176" BBK_DIFF_A="-0.90999"/>
      <bbk:Obs TIME_PERIOD="2019-06-17" OBS_VALUE="4.16175" BBK_DIFF_A="1.417"/>
      <bbk:Obs TIME_PERIOD="2019-06-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-06-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-06-14" OBS_VALUE="2.74475" BBK_DIFF_A="-0.02708"/>
      <bbk:Obs TIME_PERIOD="2019-06-13" OBS_VALUE="2.77183" BBK_DIFF_A="0.0833"/>
      <bbk:Obs TIME_PERIOD="2019-06-12" OBS_VALUE="2.68853" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-06-11" OBS_VALUE="2.68853" BBK_DIFF_A="-0.06033"/>
      <bbk:Obs TIME_PERIOD="2019-06-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-06-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-06-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-06-07" OBS_VALUE="2.74886" BBK_DIFF_A="0.04078"/>
      <bbk:Obs TIME_PERIOD="2019-06-06" OBS_VALUE="2.70808" BBK_DIFF_A="-0.0265"/>
      <bbk:Obs TIME_PERIOD="2019-06-05" OBS_VALUE="2.73458" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-06-04" OBS_VALUE="2.73458" BBK_DIFF_A="-0.59172"/>
      <bbk:Obs TIME_PERIOD="2019-06-03" OBS_VALUE="3.3263" BBK_DIFF_A="0.53204"/>
      <bbk:Obs TIME_PERIOD="2019-06-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-06-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-05-31" OBS_VALUE="2.79426" BBK_DIFF_A="0.04281"/>
      <bbk:Obs TIME_PERIOD="2019-05-30" OBS_VALUE="2.75145" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-05-29" OBS_VALUE="2.75145" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-05-28" OBS_VALUE="2.75145" BBK_DIFF_A="0.00417"/>
      <bbk:Obs TIME_PERIOD="2019-05-27" OBS_VALUE="2.74728" BBK_DIFF_A="0.10056"/>
      <bbk:Obs TIME_PERIOD="2019-05-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-05-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-05-24" OBS_VALUE="2.64672" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-05-23" OBS_VALUE="2.64672" BBK_DIFF_A="0.02525"/>
      <bbk:Obs TIME_PERIOD="2019-05-22" OBS_VALUE="2.62147" BBK_DIFF_A="-0.01009"/>
      <bbk:Obs TIME_PERIOD="2019-05-21" OBS_VALUE="2.63156" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-05-20" OBS_VALUE="2.63156" BBK_DIFF_A="0.02171"/>
      <bbk:Obs TIME_PERIOD="2019-05-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-05-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-05-17" OBS_VALUE="2.60985" BBK_DIFF_A="-0.16622"/>
      <bbk:Obs TIME_PERIOD="2019-05-16" OBS_VALUE="2.77607" BBK_DIFF_A="-0.1365"/>
      <bbk:Obs TIME_PERIOD="2019-05-15" OBS_VALUE="2.91257" BBK_DIFF_A="0.01429"/>
      <bbk:Obs TIME_PERIOD="2019-05-14" OBS_VALUE="2.89828" BBK_DIFF_A="-0.14664"/>
      <bbk:Obs TIME_PERIOD="2019-05-13" OBS_VALUE="3.04492" BBK_DIFF_A="-0.04721"/>
      <bbk:Obs TIME_PERIOD="2019-05-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-05-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-05-10" OBS_VALUE="3.09213" BBK_DIFF_A="-0.08809"/>
      <bbk:Obs TIME_PERIOD="2019-05-09" OBS_VALUE="3.18022" BBK_DIFF_A="-0.13231"/>
      <bbk:Obs TIME_PERIOD="2019-05-08" OBS_VALUE="3.31253" BBK_DIFF_A="0.30153"/>
      <bbk:Obs TIME_PERIOD="2019-05-07" OBS_VALUE="3.011" BBK_DIFF_A="-0.23637"/>
      <bbk:Obs TIME_PERIOD="2019-05-06" OBS_VALUE="3.24737" BBK_DIFF_A="0.21914"/>
      <bbk:Obs TIME_PERIOD="2019-05-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-05-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-05-03" OBS_VALUE="3.02823" BBK_DIFF_A="-0.24013"/>
      <bbk:Obs TIME_PERIOD="2019-05-02" OBS_VALUE="3.26836" BBK_DIFF_A="0.19521"/>
      <bbk:Obs TIME_PERIOD="2019-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-04-30" OBS_VALUE="3.07315" BBK_DIFF_A="-0.21473"/>
      <bbk:Obs TIME_PERIOD="2019-04-29" OBS_VALUE="3.28788" BBK_DIFF_A="-0.02547"/>
      <bbk:Obs TIME_PERIOD="2019-04-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-04-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-04-26" OBS_VALUE="3.31335" BBK_DIFF_A="-0.66792"/>
      <bbk:Obs TIME_PERIOD="2019-04-25" OBS_VALUE="3.98127" BBK_DIFF_A="-0.91848"/>
      <bbk:Obs TIME_PERIOD="2019-04-24" OBS_VALUE="4.89975" BBK_DIFF_A="0.58964"/>
      <bbk:Obs TIME_PERIOD="2019-04-23" OBS_VALUE="4.31011" BBK_DIFF_A="1.46319"/>
      <bbk:Obs TIME_PERIOD="2019-04-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-04-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-04-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-04-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-04-18" OBS_VALUE="2.84692" BBK_DIFF_A="-0.33927"/>
      <bbk:Obs TIME_PERIOD="2019-04-17" OBS_VALUE="3.18619" BBK_DIFF_A="0.24948"/>
      <bbk:Obs TIME_PERIOD="2019-04-16" OBS_VALUE="2.93671" BBK_DIFF_A="-1.76234"/>
      <bbk:Obs TIME_PERIOD="2019-04-15" OBS_VALUE="4.69905" BBK_DIFF_A="0.11534"/>
      <bbk:Obs TIME_PERIOD="2019-04-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-04-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-04-12" OBS_VALUE="4.58371" BBK_DIFF_A="0.49944"/>
      <bbk:Obs TIME_PERIOD="2019-04-11" OBS_VALUE="4.08427" BBK_DIFF_A="-0.00132"/>
      <bbk:Obs TIME_PERIOD="2019-04-10" OBS_VALUE="4.08559" BBK_DIFF_A="0.32816"/>
      <bbk:Obs TIME_PERIOD="2019-04-09" OBS_VALUE="3.75743" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-04-08" OBS_VALUE="3.75743" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-04-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-04-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-04-05" OBS_VALUE="3.75743" BBK_DIFF_A="-0.1534"/>
      <bbk:Obs TIME_PERIOD="2019-04-04" OBS_VALUE="3.91083" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-04-03" OBS_VALUE="3.91083" BBK_DIFF_A="0.07225"/>
      <bbk:Obs TIME_PERIOD="2019-04-02" OBS_VALUE="3.83858" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-04-01" OBS_VALUE="3.83858" BBK_DIFF_A="-4.89874"/>
      <bbk:Obs TIME_PERIOD="2019-03-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-03-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-03-29" OBS_VALUE="8.73732" BBK_DIFF_A="4.77808"/>
      <bbk:Obs TIME_PERIOD="2019-03-28" OBS_VALUE="3.95924" BBK_DIFF_A="0.37992"/>
      <bbk:Obs TIME_PERIOD="2019-03-27" OBS_VALUE="3.57932" BBK_DIFF_A="-0.16468"/>
      <bbk:Obs TIME_PERIOD="2019-03-26" OBS_VALUE="3.744" BBK_DIFF_A="-0.70756"/>
      <bbk:Obs TIME_PERIOD="2019-03-25" OBS_VALUE="4.45156" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-03-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-03-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-03-22" OBS_VALUE="4.45156" BBK_DIFF_A="-0.09627"/>
      <bbk:Obs TIME_PERIOD="2019-03-21" OBS_VALUE="4.54783" BBK_DIFF_A="0.49432"/>
      <bbk:Obs TIME_PERIOD="2019-03-20" OBS_VALUE="4.05351" BBK_DIFF_A="-0.22993"/>
      <bbk:Obs TIME_PERIOD="2019-03-19" OBS_VALUE="4.28344" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-03-18" OBS_VALUE="4.28344" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-03-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-03-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-03-15" OBS_VALUE="4.28344" BBK_DIFF_A="-0.22829"/>
      <bbk:Obs TIME_PERIOD="2019-03-14" OBS_VALUE="4.51173" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-03-13" OBS_VALUE="4.51173" BBK_DIFF_A="0.26816"/>
      <bbk:Obs TIME_PERIOD="2019-03-12" OBS_VALUE="4.24357" BBK_DIFF_A="-0.45196"/>
      <bbk:Obs TIME_PERIOD="2019-03-11" OBS_VALUE="4.69553" BBK_DIFF_A="0.0962"/>
      <bbk:Obs TIME_PERIOD="2019-03-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-03-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-03-08" OBS_VALUE="4.59933" BBK_DIFF_A="1.19654"/>
      <bbk:Obs TIME_PERIOD="2019-03-07" OBS_VALUE="3.40279" BBK_DIFF_A="0.41763"/>
      <bbk:Obs TIME_PERIOD="2019-03-06" OBS_VALUE="2.98516" BBK_DIFF_A="-0.18859"/>
      <bbk:Obs TIME_PERIOD="2019-03-05" OBS_VALUE="3.17375" BBK_DIFF_A="-0.00186"/>
      <bbk:Obs TIME_PERIOD="2019-03-04" OBS_VALUE="3.17561" BBK_DIFF_A="0.4111"/>
      <bbk:Obs TIME_PERIOD="2019-03-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-03-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-03-01" OBS_VALUE="2.76451" BBK_DIFF_A="0.20614"/>
      <bbk:Obs TIME_PERIOD="2019-02-28" OBS_VALUE="2.55837" BBK_DIFF_A="-0.04525"/>
      <bbk:Obs TIME_PERIOD="2019-02-27" OBS_VALUE="2.60362" BBK_DIFF_A="-0.16502"/>
      <bbk:Obs TIME_PERIOD="2019-02-26" OBS_VALUE="2.76864" BBK_DIFF_A="-2.60566"/>
      <bbk:Obs TIME_PERIOD="2019-02-25" OBS_VALUE="5.3743" BBK_DIFF_A="-0.21362"/>
      <bbk:Obs TIME_PERIOD="2019-02-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-02-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-02-22" OBS_VALUE="5.58792" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-02-21" OBS_VALUE="5.58792" BBK_DIFF_A="0.39844"/>
      <bbk:Obs TIME_PERIOD="2019-02-20" OBS_VALUE="5.18948" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-02-19" OBS_VALUE="5.18948" BBK_DIFF_A="0.4144"/>
      <bbk:Obs TIME_PERIOD="2019-02-18" OBS_VALUE="4.77508" BBK_DIFF_A="0.50578"/>
      <bbk:Obs TIME_PERIOD="2019-02-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-02-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-02-15" OBS_VALUE="4.2693" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-02-14" OBS_VALUE="4.2693" BBK_DIFF_A="0.77646"/>
      <bbk:Obs TIME_PERIOD="2019-02-13" OBS_VALUE="3.49284" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-02-12" OBS_VALUE="3.49284" BBK_DIFF_A="0.47059"/>
      <bbk:Obs TIME_PERIOD="2019-02-11" OBS_VALUE="3.02225" BBK_DIFF_A="-0.93389"/>
      <bbk:Obs TIME_PERIOD="2019-02-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-02-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-02-08" OBS_VALUE="3.95614" BBK_DIFF_A="0.36566"/>
      <bbk:Obs TIME_PERIOD="2019-02-07" OBS_VALUE="3.59048" BBK_DIFF_A="0.14064"/>
      <bbk:Obs TIME_PERIOD="2019-02-06" OBS_VALUE="3.44984" BBK_DIFF_A="0.99158"/>
      <bbk:Obs TIME_PERIOD="2019-02-05" OBS_VALUE="2.45826" BBK_DIFF_A="-0.3223"/>
      <bbk:Obs TIME_PERIOD="2019-02-04" OBS_VALUE="2.78056" BBK_DIFF_A="2.76374"/>
      <bbk:Obs TIME_PERIOD="2019-02-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-02-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-02-01" OBS_VALUE="0.01682" BBK_DIFF_A="0.00841"/>
      <bbk:Obs TIME_PERIOD="2019-01-31" OBS_VALUE="0.00841" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2019-01-30" OBS_VALUE="0.00841" BBK_DIFF_A="-0.12608"/>
      <bbk:Obs TIME_PERIOD="2019-01-29" OBS_VALUE="0.13449" BBK_DIFF_A="-2.01736"/>
      <bbk:Obs TIME_PERIOD="2019-01-28" OBS_VALUE="2.15185" BBK_DIFF_A="-0.45711"/>
      <bbk:Obs TIME_PERIOD="2019-01-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-01-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-01-25" OBS_VALUE="2.60896" BBK_DIFF_A="-0.68265"/>
      <bbk:Obs TIME_PERIOD="2019-01-24" OBS_VALUE="3.29161" BBK_DIFF_A="0.1488"/>
      <bbk:Obs TIME_PERIOD="2019-01-23" OBS_VALUE="3.14281" BBK_DIFF_A="0.64524"/>
      <bbk:Obs TIME_PERIOD="2019-01-22" OBS_VALUE="2.49757" BBK_DIFF_A="2.32088"/>
      <bbk:Obs TIME_PERIOD="2019-01-21" OBS_VALUE="0.17669" BBK_DIFF_A="-2.65042"/>
      <bbk:Obs TIME_PERIOD="2019-01-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-01-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-01-18" OBS_VALUE="2.82711" BBK_DIFF_A="0.41876"/>
      <bbk:Obs TIME_PERIOD="2019-01-17" OBS_VALUE="2.40835" BBK_DIFF_A="-0.163"/>
      <bbk:Obs TIME_PERIOD="2019-01-16" OBS_VALUE="2.57135" BBK_DIFF_A="0.04284"/>
      <bbk:Obs TIME_PERIOD="2019-01-15" OBS_VALUE="2.52851" BBK_DIFF_A="0.27941"/>
      <bbk:Obs TIME_PERIOD="2019-01-14" OBS_VALUE="2.2491" BBK_DIFF_A="0.06013"/>
      <bbk:Obs TIME_PERIOD="2019-01-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-01-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-01-11" OBS_VALUE="2.18897" BBK_DIFF_A="-0.95997"/>
      <bbk:Obs TIME_PERIOD="2019-01-10" OBS_VALUE="3.14894" BBK_DIFF_A="-0.1861"/>
      <bbk:Obs TIME_PERIOD="2019-01-09" OBS_VALUE="3.33504" BBK_DIFF_A="-0.13011"/>
      <bbk:Obs TIME_PERIOD="2019-01-08" OBS_VALUE="3.46515" BBK_DIFF_A="0.09781"/>
      <bbk:Obs TIME_PERIOD="2019-01-07" OBS_VALUE="3.36734" BBK_DIFF_A="0.22946"/>
      <bbk:Obs TIME_PERIOD="2019-01-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-01-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2019-01-04" OBS_VALUE="3.13788" BBK_DIFF_A="0.27267"/>
      <bbk:Obs TIME_PERIOD="2019-01-03" OBS_VALUE="2.86521" BBK_DIFF_A="-0.01653"/>
      <bbk:Obs TIME_PERIOD="2019-01-02" OBS_VALUE="2.88174" BBK_DIFF_A="2.39345"/>
      <bbk:Obs TIME_PERIOD="2019-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-12-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-12-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-12-28" OBS_VALUE="0.48829" BBK_DIFF_A="0.03714"/>
      <bbk:Obs TIME_PERIOD="2018-12-27" OBS_VALUE="0.45115" BBK_DIFF_A="-0.05011"/>
      <bbk:Obs TIME_PERIOD="2018-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-12-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-12-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-12-21" OBS_VALUE="0.50126" BBK_DIFF_A="0.04917"/>
      <bbk:Obs TIME_PERIOD="2018-12-20" OBS_VALUE="0.45209" BBK_DIFF_A="0.02396"/>
      <bbk:Obs TIME_PERIOD="2018-12-19" OBS_VALUE="0.42813" BBK_DIFF_A="-0.02054"/>
      <bbk:Obs TIME_PERIOD="2018-12-18" OBS_VALUE="0.44867" BBK_DIFF_A="0.00159"/>
      <bbk:Obs TIME_PERIOD="2018-12-17" OBS_VALUE="0.44708" BBK_DIFF_A="-0.02212"/>
      <bbk:Obs TIME_PERIOD="2018-12-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-12-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-12-14" OBS_VALUE="0.4692" BBK_DIFF_A="-1.566"/>
      <bbk:Obs TIME_PERIOD="2018-12-13" OBS_VALUE="2.0352" BBK_DIFF_A="0.01021"/>
      <bbk:Obs TIME_PERIOD="2018-12-12" OBS_VALUE="2.02499" BBK_DIFF_A="0.01903"/>
      <bbk:Obs TIME_PERIOD="2018-12-11" OBS_VALUE="2.00596" BBK_DIFF_A="-0.04999"/>
      <bbk:Obs TIME_PERIOD="2018-12-10" OBS_VALUE="2.05595" BBK_DIFF_A="-0.06986"/>
      <bbk:Obs TIME_PERIOD="2018-12-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-12-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-12-07" OBS_VALUE="2.12581" BBK_DIFF_A="1.87135"/>
      <bbk:Obs TIME_PERIOD="2018-12-06" OBS_VALUE="0.25446" BBK_DIFF_A="-0.14678"/>
      <bbk:Obs TIME_PERIOD="2018-12-05" OBS_VALUE="0.40124" BBK_DIFF_A="0.0619"/>
      <bbk:Obs TIME_PERIOD="2018-12-04" OBS_VALUE="0.33934" BBK_DIFF_A="-0.05556"/>
      <bbk:Obs TIME_PERIOD="2018-12-03" OBS_VALUE="0.3949" BBK_DIFF_A="0.02173"/>
      <bbk:Obs TIME_PERIOD="2018-12-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-12-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-11-30" OBS_VALUE="0.37317" BBK_DIFF_A="0.04196"/>
      <bbk:Obs TIME_PERIOD="2018-11-29" OBS_VALUE="0.33121" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-11-28" OBS_VALUE="0.33121" BBK_DIFF_A="0.04082"/>
      <bbk:Obs TIME_PERIOD="2018-11-27" OBS_VALUE="0.29039" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-11-26" OBS_VALUE="0.29039" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-11-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-11-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-11-23" OBS_VALUE="0.29039" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-11-22" OBS_VALUE="0.29039" BBK_DIFF_A="-0.00134"/>
      <bbk:Obs TIME_PERIOD="2018-11-21" OBS_VALUE="0.29173" BBK_DIFF_A="0.00336"/>
      <bbk:Obs TIME_PERIOD="2018-11-20" OBS_VALUE="0.28837" BBK_DIFF_A="-0.02111"/>
      <bbk:Obs TIME_PERIOD="2018-11-19" OBS_VALUE="0.30948" BBK_DIFF_A="0.00902"/>
      <bbk:Obs TIME_PERIOD="2018-11-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-11-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-11-16" OBS_VALUE="0.30046" BBK_DIFF_A="0.01584"/>
      <bbk:Obs TIME_PERIOD="2018-11-15" OBS_VALUE="0.28462" BBK_DIFF_A="0.01683"/>
      <bbk:Obs TIME_PERIOD="2018-11-14" OBS_VALUE="0.26779" BBK_DIFF_A="0.00567"/>
      <bbk:Obs TIME_PERIOD="2018-11-13" OBS_VALUE="0.26212" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-11-12" OBS_VALUE="0.26212" BBK_DIFF_A="-0.00539"/>
      <bbk:Obs TIME_PERIOD="2018-11-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-11-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-11-09" OBS_VALUE="0.26751" BBK_DIFF_A="0.01359"/>
      <bbk:Obs TIME_PERIOD="2018-11-08" OBS_VALUE="0.25392" BBK_DIFF_A="-0.00248"/>
      <bbk:Obs TIME_PERIOD="2018-11-07" OBS_VALUE="0.2564" BBK_DIFF_A="-0.00862"/>
      <bbk:Obs TIME_PERIOD="2018-11-06" OBS_VALUE="0.26502" BBK_DIFF_A="0.00833"/>
      <bbk:Obs TIME_PERIOD="2018-11-05" OBS_VALUE="0.25669" BBK_DIFF_A="0.00375"/>
      <bbk:Obs TIME_PERIOD="2018-11-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-11-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-11-02" OBS_VALUE="0.25294" BBK_DIFF_A="-0.00752"/>
      <bbk:Obs TIME_PERIOD="2018-11-01" OBS_VALUE="0.26046" BBK_DIFF_A="-0.0093"/>
      <bbk:Obs TIME_PERIOD="2018-10-31" OBS_VALUE="0.26976" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-10-30" OBS_VALUE="0.26976" BBK_DIFF_A="-0.00637"/>
      <bbk:Obs TIME_PERIOD="2018-10-29" OBS_VALUE="0.27613" BBK_DIFF_A="0.00515"/>
      <bbk:Obs TIME_PERIOD="2018-10-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-10-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-10-26" OBS_VALUE="0.27098" BBK_DIFF_A="0.00445"/>
      <bbk:Obs TIME_PERIOD="2018-10-25" OBS_VALUE="0.26653" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-10-24" OBS_VALUE="0.26653" BBK_DIFF_A="-0.01287"/>
      <bbk:Obs TIME_PERIOD="2018-10-23" OBS_VALUE="0.2794" BBK_DIFF_A="-0.00148"/>
      <bbk:Obs TIME_PERIOD="2018-10-22" OBS_VALUE="0.28088" BBK_DIFF_A="0.0041"/>
      <bbk:Obs TIME_PERIOD="2018-10-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-10-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-10-19" OBS_VALUE="0.27678" BBK_DIFF_A="0.00391"/>
      <bbk:Obs TIME_PERIOD="2018-10-18" OBS_VALUE="0.27287" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-10-17" OBS_VALUE="0.27287" BBK_DIFF_A="7.3E-4"/>
      <bbk:Obs TIME_PERIOD="2018-10-16" OBS_VALUE="0.27214" BBK_DIFF_A="0.00781"/>
      <bbk:Obs TIME_PERIOD="2018-10-15" OBS_VALUE="0.26433" BBK_DIFF_A="0.00282"/>
      <bbk:Obs TIME_PERIOD="2018-10-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-10-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-10-12" OBS_VALUE="0.26151" BBK_DIFF_A="0.01234"/>
      <bbk:Obs TIME_PERIOD="2018-10-11" OBS_VALUE="0.24917" BBK_DIFF_A="0.00663"/>
      <bbk:Obs TIME_PERIOD="2018-10-10" OBS_VALUE="0.24254" BBK_DIFF_A="-0.00546"/>
      <bbk:Obs TIME_PERIOD="2018-10-09" OBS_VALUE="0.248" BBK_DIFF_A="-0.01161"/>
      <bbk:Obs TIME_PERIOD="2018-10-08" OBS_VALUE="0.25961" BBK_DIFF_A="0.03239"/>
      <bbk:Obs TIME_PERIOD="2018-10-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-10-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-10-05" OBS_VALUE="0.22722" BBK_DIFF_A="-0.05416"/>
      <bbk:Obs TIME_PERIOD="2018-10-04" OBS_VALUE="0.28138" BBK_DIFF_A="0.01745"/>
      <bbk:Obs TIME_PERIOD="2018-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-10-02" OBS_VALUE="0.26393" BBK_DIFF_A="-0.00796"/>
      <bbk:Obs TIME_PERIOD="2018-10-01" OBS_VALUE="0.27189" BBK_DIFF_A="-0.02685"/>
      <bbk:Obs TIME_PERIOD="2018-09-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-09-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-09-28" OBS_VALUE="0.29874" BBK_DIFF_A="0.02572"/>
      <bbk:Obs TIME_PERIOD="2018-09-27" OBS_VALUE="0.27302" BBK_DIFF_A="0.00432"/>
      <bbk:Obs TIME_PERIOD="2018-09-26" OBS_VALUE="0.2687" BBK_DIFF_A="-0.04196"/>
      <bbk:Obs TIME_PERIOD="2018-09-25" OBS_VALUE="0.31066" BBK_DIFF_A="-0.15756"/>
      <bbk:Obs TIME_PERIOD="2018-09-24" OBS_VALUE="0.46822" BBK_DIFF_A="0.12258"/>
      <bbk:Obs TIME_PERIOD="2018-09-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-09-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-09-21" OBS_VALUE="0.34564" BBK_DIFF_A="0.3445"/>
      <bbk:Obs TIME_PERIOD="2018-09-20" OBS_VALUE="0.00114" BBK_DIFF_A="-0.00589"/>
      <bbk:Obs TIME_PERIOD="2018-09-19" OBS_VALUE="0.00703" BBK_DIFF_A="-0.05956"/>
      <bbk:Obs TIME_PERIOD="2018-09-18" OBS_VALUE="0.06659" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-09-17" OBS_VALUE="0.06659" BBK_DIFF_A="-0.01622"/>
      <bbk:Obs TIME_PERIOD="2018-09-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-09-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-09-14" OBS_VALUE="0.08281" BBK_DIFF_A="-0.0195"/>
      <bbk:Obs TIME_PERIOD="2018-09-13" OBS_VALUE="0.10231" BBK_DIFF_A="-0.02096"/>
      <bbk:Obs TIME_PERIOD="2018-09-12" OBS_VALUE="0.12327" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-09-11" OBS_VALUE="0.12327" BBK_DIFF_A="-0.04104"/>
      <bbk:Obs TIME_PERIOD="2018-09-10" OBS_VALUE="0.16431" BBK_DIFF_A="-0.00159"/>
      <bbk:Obs TIME_PERIOD="2018-09-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-09-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-09-07" OBS_VALUE="0.1659" BBK_DIFF_A="-7.8E-4"/>
      <bbk:Obs TIME_PERIOD="2018-09-06" OBS_VALUE="0.16668" BBK_DIFF_A="0.01724"/>
      <bbk:Obs TIME_PERIOD="2018-09-05" OBS_VALUE="0.14944" BBK_DIFF_A="0.00665"/>
      <bbk:Obs TIME_PERIOD="2018-09-04" OBS_VALUE="0.14279" BBK_DIFF_A="-0.02222"/>
      <bbk:Obs TIME_PERIOD="2018-09-03" OBS_VALUE="0.16501" BBK_DIFF_A="-0.00705"/>
      <bbk:Obs TIME_PERIOD="2018-09-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-09-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-08-31" OBS_VALUE="0.17206" BBK_DIFF_A="-0.00194"/>
      <bbk:Obs TIME_PERIOD="2018-08-30" OBS_VALUE="0.174" BBK_DIFF_A="-0.00469"/>
      <bbk:Obs TIME_PERIOD="2018-08-29" OBS_VALUE="0.17869" BBK_DIFF_A="7.9E-4"/>
      <bbk:Obs TIME_PERIOD="2018-08-28" OBS_VALUE="0.1779" BBK_DIFF_A="-0.00526"/>
      <bbk:Obs TIME_PERIOD="2018-08-27" OBS_VALUE="0.18316" BBK_DIFF_A="0.02062"/>
      <bbk:Obs TIME_PERIOD="2018-08-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-08-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-08-24" OBS_VALUE="0.16254" BBK_DIFF_A="-0.01528"/>
      <bbk:Obs TIME_PERIOD="2018-08-23" OBS_VALUE="0.17782" BBK_DIFF_A="-0.0029"/>
      <bbk:Obs TIME_PERIOD="2018-08-22" OBS_VALUE="0.18072" BBK_DIFF_A="-0.01196"/>
      <bbk:Obs TIME_PERIOD="2018-08-21" OBS_VALUE="0.19268" BBK_DIFF_A="-0.00343"/>
      <bbk:Obs TIME_PERIOD="2018-08-20" OBS_VALUE="0.19611" BBK_DIFF_A="0.01862"/>
      <bbk:Obs TIME_PERIOD="2018-08-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-08-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-08-17" OBS_VALUE="0.17749" BBK_DIFF_A="-0.01631"/>
      <bbk:Obs TIME_PERIOD="2018-08-16" OBS_VALUE="0.1938" BBK_DIFF_A="-0.00482"/>
      <bbk:Obs TIME_PERIOD="2018-08-15" OBS_VALUE="0.19862" BBK_DIFF_A="-0.01678"/>
      <bbk:Obs TIME_PERIOD="2018-08-14" OBS_VALUE="0.2154" BBK_DIFF_A="-1.86078"/>
      <bbk:Obs TIME_PERIOD="2018-08-13" OBS_VALUE="2.07618" BBK_DIFF_A="-0.76758"/>
      <bbk:Obs TIME_PERIOD="2018-08-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-08-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-08-10" OBS_VALUE="2.84376" BBK_DIFF_A="-2.94698"/>
      <bbk:Obs TIME_PERIOD="2018-08-09" OBS_VALUE="5.79074" BBK_DIFF_A="0.34245"/>
      <bbk:Obs TIME_PERIOD="2018-08-08" OBS_VALUE="5.44829" BBK_DIFF_A="-0.35776"/>
      <bbk:Obs TIME_PERIOD="2018-08-07" OBS_VALUE="5.80605" BBK_DIFF_A="-0.66195"/>
      <bbk:Obs TIME_PERIOD="2018-08-06" OBS_VALUE="6.468" BBK_DIFF_A="-0.41786"/>
      <bbk:Obs TIME_PERIOD="2018-08-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-08-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-08-03" OBS_VALUE="6.88586" BBK_DIFF_A="2.70652"/>
      <bbk:Obs TIME_PERIOD="2018-08-02" OBS_VALUE="4.17934" BBK_DIFF_A="0.84243"/>
      <bbk:Obs TIME_PERIOD="2018-08-01" OBS_VALUE="3.33691" BBK_DIFF_A="-0.12041"/>
      <bbk:Obs TIME_PERIOD="2018-07-31" OBS_VALUE="3.45732" BBK_DIFF_A="-0.11745"/>
      <bbk:Obs TIME_PERIOD="2018-07-30" OBS_VALUE="3.57477" BBK_DIFF_A="-0.21865"/>
      <bbk:Obs TIME_PERIOD="2018-07-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-07-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-07-27" OBS_VALUE="3.79342" BBK_DIFF_A="0.00297"/>
      <bbk:Obs TIME_PERIOD="2018-07-26" OBS_VALUE="3.79045" BBK_DIFF_A="0.06649"/>
      <bbk:Obs TIME_PERIOD="2018-07-25" OBS_VALUE="3.72396" BBK_DIFF_A="-0.78278"/>
      <bbk:Obs TIME_PERIOD="2018-07-24" OBS_VALUE="4.50674" BBK_DIFF_A="0.64734"/>
      <bbk:Obs TIME_PERIOD="2018-07-23" OBS_VALUE="3.8594" BBK_DIFF_A="1.44291"/>
      <bbk:Obs TIME_PERIOD="2018-07-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-07-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-07-20" OBS_VALUE="2.41649" BBK_DIFF_A="0.30631"/>
      <bbk:Obs TIME_PERIOD="2018-07-19" OBS_VALUE="2.11018" BBK_DIFF_A="-0.37739"/>
      <bbk:Obs TIME_PERIOD="2018-07-18" OBS_VALUE="2.48757" BBK_DIFF_A="0.01539"/>
      <bbk:Obs TIME_PERIOD="2018-07-17" OBS_VALUE="2.47218" BBK_DIFF_A="0.01752"/>
      <bbk:Obs TIME_PERIOD="2018-07-16" OBS_VALUE="2.45466" BBK_DIFF_A="0.00478"/>
      <bbk:Obs TIME_PERIOD="2018-07-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-07-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-07-13" OBS_VALUE="2.44988" BBK_DIFF_A="0.0457"/>
      <bbk:Obs TIME_PERIOD="2018-07-12" OBS_VALUE="2.40418" BBK_DIFF_A="0.06326"/>
      <bbk:Obs TIME_PERIOD="2018-07-11" OBS_VALUE="2.34092" BBK_DIFF_A="0.11181"/>
      <bbk:Obs TIME_PERIOD="2018-07-10" OBS_VALUE="2.22911" BBK_DIFF_A="2.22887"/>
      <bbk:Obs TIME_PERIOD="2018-07-09" OBS_VALUE="2.4E-4" BBK_DIFF_A="-0.00366"/>
      <bbk:Obs TIME_PERIOD="2018-07-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-07-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-07-06" OBS_VALUE="0.0039" BBK_DIFF_A="0.00195"/>
      <bbk:Obs TIME_PERIOD="2018-07-05" OBS_VALUE="0.00195" BBK_DIFF_A="-4.93398"/>
      <bbk:Obs TIME_PERIOD="2018-07-04" OBS_VALUE="4.93593" BBK_DIFF_A="2.74109"/>
      <bbk:Obs TIME_PERIOD="2018-07-03" OBS_VALUE="2.19484" BBK_DIFF_A="2.04005"/>
      <bbk:Obs TIME_PERIOD="2018-07-02" OBS_VALUE="0.15479" BBK_DIFF_A="-2.32184"/>
      <bbk:Obs TIME_PERIOD="2018-07-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-06-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-06-29" OBS_VALUE="2.47663" BBK_DIFF_A="2.13642"/>
      <bbk:Obs TIME_PERIOD="2018-06-28" OBS_VALUE="0.34021" BBK_DIFF_A="-2.08207"/>
      <bbk:Obs TIME_PERIOD="2018-06-27" OBS_VALUE="2.42228" BBK_DIFF_A="0.27311"/>
      <bbk:Obs TIME_PERIOD="2018-06-26" OBS_VALUE="2.14917" BBK_DIFF_A="-0.10247"/>
      <bbk:Obs TIME_PERIOD="2018-06-25" OBS_VALUE="2.25164" BBK_DIFF_A="0.11273"/>
      <bbk:Obs TIME_PERIOD="2018-06-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-06-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-06-22" OBS_VALUE="2.13891" BBK_DIFF_A="0.09209"/>
      <bbk:Obs TIME_PERIOD="2018-06-21" OBS_VALUE="2.04682" BBK_DIFF_A="-0.04964"/>
      <bbk:Obs TIME_PERIOD="2018-06-20" OBS_VALUE="2.09646" BBK_DIFF_A="-0.09102"/>
      <bbk:Obs TIME_PERIOD="2018-06-19" OBS_VALUE="2.18748" BBK_DIFF_A="0.04739"/>
      <bbk:Obs TIME_PERIOD="2018-06-18" OBS_VALUE="2.14009" BBK_DIFF_A="0.05163"/>
      <bbk:Obs TIME_PERIOD="2018-06-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-06-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-06-15" OBS_VALUE="2.08846" BBK_DIFF_A="0.11081"/>
      <bbk:Obs TIME_PERIOD="2018-06-14" OBS_VALUE="1.97765" BBK_DIFF_A="-0.03225"/>
      <bbk:Obs TIME_PERIOD="2018-06-13" OBS_VALUE="2.0099" BBK_DIFF_A="0.01238"/>
      <bbk:Obs TIME_PERIOD="2018-06-12" OBS_VALUE="1.99752" BBK_DIFF_A="0.07735"/>
      <bbk:Obs TIME_PERIOD="2018-06-11" OBS_VALUE="1.92017" BBK_DIFF_A="-0.0598"/>
      <bbk:Obs TIME_PERIOD="2018-06-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-06-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-06-08" OBS_VALUE="1.97997" BBK_DIFF_A="0.1116"/>
      <bbk:Obs TIME_PERIOD="2018-06-07" OBS_VALUE="1.86837" BBK_DIFF_A="-0.09854"/>
      <bbk:Obs TIME_PERIOD="2018-06-06" OBS_VALUE="1.96691" BBK_DIFF_A="0.11455"/>
      <bbk:Obs TIME_PERIOD="2018-06-05" OBS_VALUE="1.85236" BBK_DIFF_A="-0.09344"/>
      <bbk:Obs TIME_PERIOD="2018-06-04" OBS_VALUE="1.9458" BBK_DIFF_A="-0.12063"/>
      <bbk:Obs TIME_PERIOD="2018-06-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-06-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-06-01" OBS_VALUE="2.06643" BBK_DIFF_A="0.14584"/>
      <bbk:Obs TIME_PERIOD="2018-05-31" OBS_VALUE="1.92059" BBK_DIFF_A="-0.00427"/>
      <bbk:Obs TIME_PERIOD="2018-05-30" OBS_VALUE="1.92486" BBK_DIFF_A="0.72073"/>
      <bbk:Obs TIME_PERIOD="2018-05-29" OBS_VALUE="1.20413" BBK_DIFF_A="-2.26589"/>
      <bbk:Obs TIME_PERIOD="2018-05-28" OBS_VALUE="3.47002" BBK_DIFF_A="1.26471"/>
      <bbk:Obs TIME_PERIOD="2018-05-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-05-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-05-25" OBS_VALUE="2.20531" BBK_DIFF_A="2.13847"/>
      <bbk:Obs TIME_PERIOD="2018-05-24" OBS_VALUE="0.06684" BBK_DIFF_A="-1.30419"/>
      <bbk:Obs TIME_PERIOD="2018-05-23" OBS_VALUE="1.37103" BBK_DIFF_A="0.31462"/>
      <bbk:Obs TIME_PERIOD="2018-05-22" OBS_VALUE="1.05641" BBK_DIFF_A="-0.15596"/>
      <bbk:Obs TIME_PERIOD="2018-05-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-05-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-05-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-05-18" OBS_VALUE="1.21237" BBK_DIFF_A="0.07009"/>
      <bbk:Obs TIME_PERIOD="2018-05-17" OBS_VALUE="1.14228" BBK_DIFF_A="-1.48681"/>
      <bbk:Obs TIME_PERIOD="2018-05-16" OBS_VALUE="2.62909" BBK_DIFF_A="2.28251"/>
      <bbk:Obs TIME_PERIOD="2018-05-15" OBS_VALUE="0.34658" BBK_DIFF_A="-0.29453"/>
      <bbk:Obs TIME_PERIOD="2018-05-14" OBS_VALUE="0.64111" BBK_DIFF_A="-0.66727"/>
      <bbk:Obs TIME_PERIOD="2018-05-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-05-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-05-11" OBS_VALUE="1.30838" BBK_DIFF_A="1.30828"/>
      <bbk:Obs TIME_PERIOD="2018-05-10" OBS_VALUE="1.0E-4" BBK_DIFF_A="-1.0E-4"/>
      <bbk:Obs TIME_PERIOD="2018-05-09" OBS_VALUE="2.0E-4" BBK_DIFF_A="1.0E-4"/>
      <bbk:Obs TIME_PERIOD="2018-05-08" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.01159"/>
      <bbk:Obs TIME_PERIOD="2018-05-07" OBS_VALUE="0.01169" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-05-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-05-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-05-04" OBS_VALUE="0.01169" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-05-03" OBS_VALUE="0.01169" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-05-02" OBS_VALUE="0.01169" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-04-30" OBS_VALUE="0.01169" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-04-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-04-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-04-27" OBS_VALUE="0.01169" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-04-26" OBS_VALUE="0.01169" BBK_DIFF_A="-0.17531"/>
      <bbk:Obs TIME_PERIOD="2018-04-25" OBS_VALUE="0.187" BBK_DIFF_A="-0.05922"/>
      <bbk:Obs TIME_PERIOD="2018-04-24" OBS_VALUE="0.24622" BBK_DIFF_A="0.22729"/>
      <bbk:Obs TIME_PERIOD="2018-04-23" OBS_VALUE="0.01893" BBK_DIFF_A="-0.08712"/>
      <bbk:Obs TIME_PERIOD="2018-04-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-04-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-04-20" OBS_VALUE="0.10605" BBK_DIFF_A="-0.0205"/>
      <bbk:Obs TIME_PERIOD="2018-04-19" OBS_VALUE="0.12655" BBK_DIFF_A="-1.02961"/>
      <bbk:Obs TIME_PERIOD="2018-04-18" OBS_VALUE="1.15616" BBK_DIFF_A="0.57808"/>
      <bbk:Obs TIME_PERIOD="2018-04-17" OBS_VALUE="0.57808" BBK_DIFF_A="-0.4726"/>
      <bbk:Obs TIME_PERIOD="2018-04-16" OBS_VALUE="1.05068" BBK_DIFF_A="0.52534"/>
      <bbk:Obs TIME_PERIOD="2018-04-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-04-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-04-13" OBS_VALUE="0.52534" BBK_DIFF_A="0.0654"/>
      <bbk:Obs TIME_PERIOD="2018-04-12" OBS_VALUE="0.45994" BBK_DIFF_A="-1.80908"/>
      <bbk:Obs TIME_PERIOD="2018-04-11" OBS_VALUE="2.26902" BBK_DIFF_A="0.10326"/>
      <bbk:Obs TIME_PERIOD="2018-04-10" OBS_VALUE="2.16576" BBK_DIFF_A="-0.04965"/>
      <bbk:Obs TIME_PERIOD="2018-04-09" OBS_VALUE="2.21541" BBK_DIFF_A="-0.01093"/>
      <bbk:Obs TIME_PERIOD="2018-04-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-04-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-04-06" OBS_VALUE="2.22634" BBK_DIFF_A="2.22624"/>
      <bbk:Obs TIME_PERIOD="2018-04-05" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-04-04" OBS_VALUE="1.0E-4" BBK_DIFF_A="-2.11981"/>
      <bbk:Obs TIME_PERIOD="2018-04-03" OBS_VALUE="2.11991" BBK_DIFF_A="1.93224"/>
      <bbk:Obs TIME_PERIOD="2018-04-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-04-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-03-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-03-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-03-29" OBS_VALUE="0.18767" BBK_DIFF_A="-0.03569"/>
      <bbk:Obs TIME_PERIOD="2018-03-28" OBS_VALUE="0.22336" BBK_DIFF_A="-0.06587"/>
      <bbk:Obs TIME_PERIOD="2018-03-27" OBS_VALUE="0.28923" BBK_DIFF_A="0.28913"/>
      <bbk:Obs TIME_PERIOD="2018-03-26" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-03-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-03-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-03-23" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-03-22" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-03-21" OBS_VALUE="1.0E-4" BBK_DIFF_A="-1.99849"/>
      <bbk:Obs TIME_PERIOD="2018-03-20" OBS_VALUE="1.99859" BBK_DIFF_A="0.58326"/>
      <bbk:Obs TIME_PERIOD="2018-03-19" OBS_VALUE="1.41533" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-03-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-03-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-03-16" OBS_VALUE="1.41533" BBK_DIFF_A="-0.05609"/>
      <bbk:Obs TIME_PERIOD="2018-03-15" OBS_VALUE="1.47142" BBK_DIFF_A="-0.26393"/>
      <bbk:Obs TIME_PERIOD="2018-03-14" OBS_VALUE="1.73535" BBK_DIFF_A="-0.14756"/>
      <bbk:Obs TIME_PERIOD="2018-03-13" OBS_VALUE="1.88291" BBK_DIFF_A="-0.6721"/>
      <bbk:Obs TIME_PERIOD="2018-03-12" OBS_VALUE="2.55501" BBK_DIFF_A="0.3482"/>
      <bbk:Obs TIME_PERIOD="2018-03-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-03-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-03-09" OBS_VALUE="2.20681" BBK_DIFF_A="0.45925"/>
      <bbk:Obs TIME_PERIOD="2018-03-08" OBS_VALUE="1.74756" BBK_DIFF_A="0.7001"/>
      <bbk:Obs TIME_PERIOD="2018-03-07" OBS_VALUE="1.04746" BBK_DIFF_A="0.95144"/>
      <bbk:Obs TIME_PERIOD="2018-03-06" OBS_VALUE="0.09602" BBK_DIFF_A="-15.42056"/>
      <bbk:Obs TIME_PERIOD="2018-03-05" OBS_VALUE="15.51658" BBK_DIFF_A="-0.18082"/>
      <bbk:Obs TIME_PERIOD="2018-03-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-03-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-03-02" OBS_VALUE="15.6974" BBK_DIFF_A="-0.24372"/>
      <bbk:Obs TIME_PERIOD="2018-03-01" OBS_VALUE="15.94112" BBK_DIFF_A="0.40113"/>
      <bbk:Obs TIME_PERIOD="2018-02-28" OBS_VALUE="15.53999" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2018-02-27" OBS_VALUE="15.53999" BBK_DIFF_A="-0.36352"/>
      <bbk:Obs TIME_PERIOD="2018-02-26" OBS_VALUE="15.90351" BBK_DIFF_A="-0.07122"/>
      <bbk:Obs TIME_PERIOD="2018-02-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-02-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-02-23" OBS_VALUE="15.97473" BBK_DIFF_A="0.48009"/>
      <bbk:Obs TIME_PERIOD="2018-02-22" OBS_VALUE="15.49464" BBK_DIFF_A="-0.41191"/>
      <bbk:Obs TIME_PERIOD="2018-02-21" OBS_VALUE="15.90655" BBK_DIFF_A="0.63375"/>
      <bbk:Obs TIME_PERIOD="2018-02-20" OBS_VALUE="15.2728" BBK_DIFF_A="-0.16237"/>
      <bbk:Obs TIME_PERIOD="2018-02-19" OBS_VALUE="15.43517" BBK_DIFF_A="0.73114"/>
      <bbk:Obs TIME_PERIOD="2018-02-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-02-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-02-16" OBS_VALUE="14.70403" BBK_DIFF_A="-0.21574"/>
      <bbk:Obs TIME_PERIOD="2018-02-15" OBS_VALUE="14.91977" BBK_DIFF_A="0.00283"/>
      <bbk:Obs TIME_PERIOD="2018-02-14" OBS_VALUE="14.91694" BBK_DIFF_A="0.65242"/>
      <bbk:Obs TIME_PERIOD="2018-02-13" OBS_VALUE="14.26452" BBK_DIFF_A="1.01048"/>
      <bbk:Obs TIME_PERIOD="2018-02-12" OBS_VALUE="13.25404" BBK_DIFF_A="11.51484"/>
      <bbk:Obs TIME_PERIOD="2018-02-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-02-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-02-09" OBS_VALUE="1.7392" BBK_DIFF_A="0.03251"/>
      <bbk:Obs TIME_PERIOD="2018-02-08" OBS_VALUE="1.70669" BBK_DIFF_A="-0.13589"/>
      <bbk:Obs TIME_PERIOD="2018-02-07" OBS_VALUE="1.84258" BBK_DIFF_A="0.0217"/>
      <bbk:Obs TIME_PERIOD="2018-02-06" OBS_VALUE="1.82088" BBK_DIFF_A="0.01958"/>
      <bbk:Obs TIME_PERIOD="2018-02-05" OBS_VALUE="1.8013" BBK_DIFF_A="-0.0522"/>
      <bbk:Obs TIME_PERIOD="2018-02-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-02-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-02-02" OBS_VALUE="1.8535" BBK_DIFF_A="-0.02475"/>
      <bbk:Obs TIME_PERIOD="2018-02-01" OBS_VALUE="1.87825" BBK_DIFF_A="-0.15374"/>
      <bbk:Obs TIME_PERIOD="2018-01-31" OBS_VALUE="2.03199" BBK_DIFF_A="-0.05003"/>
      <bbk:Obs TIME_PERIOD="2018-01-30" OBS_VALUE="2.08202" BBK_DIFF_A="-0.17244"/>
      <bbk:Obs TIME_PERIOD="2018-01-29" OBS_VALUE="2.25446" BBK_DIFF_A="-0.1132"/>
      <bbk:Obs TIME_PERIOD="2018-01-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-01-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-01-26" OBS_VALUE="2.36766" BBK_DIFF_A="0.16036"/>
      <bbk:Obs TIME_PERIOD="2018-01-25" OBS_VALUE="2.2073" BBK_DIFF_A="-0.01345"/>
      <bbk:Obs TIME_PERIOD="2018-01-24" OBS_VALUE="2.22075" BBK_DIFF_A="0.00706"/>
      <bbk:Obs TIME_PERIOD="2018-01-23" OBS_VALUE="2.21369" BBK_DIFF_A="0.0213"/>
      <bbk:Obs TIME_PERIOD="2018-01-22" OBS_VALUE="2.19239" BBK_DIFF_A="0.01563"/>
      <bbk:Obs TIME_PERIOD="2018-01-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-01-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-01-19" OBS_VALUE="2.17676" BBK_DIFF_A="-0.01442"/>
      <bbk:Obs TIME_PERIOD="2018-01-18" OBS_VALUE="2.19118" BBK_DIFF_A="-0.06449"/>
      <bbk:Obs TIME_PERIOD="2018-01-17" OBS_VALUE="2.25567" BBK_DIFF_A="0.29591"/>
      <bbk:Obs TIME_PERIOD="2018-01-16" OBS_VALUE="1.95976" BBK_DIFF_A="1.9032"/>
      <bbk:Obs TIME_PERIOD="2018-01-15" OBS_VALUE="0.05656" BBK_DIFF_A="0.04057"/>
      <bbk:Obs TIME_PERIOD="2018-01-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-01-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-01-12" OBS_VALUE="0.01599" BBK_DIFF_A="-0.3674"/>
      <bbk:Obs TIME_PERIOD="2018-01-11" OBS_VALUE="0.38339" BBK_DIFF_A="0.00673"/>
      <bbk:Obs TIME_PERIOD="2018-01-10" OBS_VALUE="0.37666" BBK_DIFF_A="0.15011"/>
      <bbk:Obs TIME_PERIOD="2018-01-09" OBS_VALUE="0.22655" BBK_DIFF_A="0.00183"/>
      <bbk:Obs TIME_PERIOD="2018-01-08" OBS_VALUE="0.22472" BBK_DIFF_A="0.00726"/>
      <bbk:Obs TIME_PERIOD="2018-01-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-01-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2018-01-05" OBS_VALUE="0.21746" BBK_DIFF_A="-0.05441"/>
      <bbk:Obs TIME_PERIOD="2018-01-04" OBS_VALUE="0.27187" BBK_DIFF_A="0.01284"/>
      <bbk:Obs TIME_PERIOD="2018-01-03" OBS_VALUE="0.25903" BBK_DIFF_A="-0.01453"/>
      <bbk:Obs TIME_PERIOD="2018-01-02" OBS_VALUE="0.27356" BBK_DIFF_A="-0.06889"/>
      <bbk:Obs TIME_PERIOD="2018-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-12-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-12-29" OBS_VALUE="0.34245" BBK_DIFF_A="0.03722"/>
      <bbk:Obs TIME_PERIOD="2017-12-28" OBS_VALUE="0.30523" BBK_DIFF_A="-0.09598"/>
      <bbk:Obs TIME_PERIOD="2017-12-27" OBS_VALUE="0.40121" BBK_DIFF_A="0.03934"/>
      <bbk:Obs TIME_PERIOD="2017-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-12-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-12-22" OBS_VALUE="0.36187" BBK_DIFF_A="-0.06392"/>
      <bbk:Obs TIME_PERIOD="2017-12-21" OBS_VALUE="0.42579" BBK_DIFF_A="0.04328"/>
      <bbk:Obs TIME_PERIOD="2017-12-20" OBS_VALUE="0.38251" BBK_DIFF_A="-0.07665"/>
      <bbk:Obs TIME_PERIOD="2017-12-19" OBS_VALUE="0.45916" BBK_DIFF_A="-0.00449"/>
      <bbk:Obs TIME_PERIOD="2017-12-18" OBS_VALUE="0.46365" BBK_DIFF_A="-0.03787"/>
      <bbk:Obs TIME_PERIOD="2017-12-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-12-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-12-15" OBS_VALUE="0.50152" BBK_DIFF_A="0.1029"/>
      <bbk:Obs TIME_PERIOD="2017-12-14" OBS_VALUE="0.39862" BBK_DIFF_A="0.03966"/>
      <bbk:Obs TIME_PERIOD="2017-12-13" OBS_VALUE="0.35896" BBK_DIFF_A="-0.01259"/>
      <bbk:Obs TIME_PERIOD="2017-12-12" OBS_VALUE="0.37155" BBK_DIFF_A="-0.04114"/>
      <bbk:Obs TIME_PERIOD="2017-12-11" OBS_VALUE="0.41269" BBK_DIFF_A="-0.11997"/>
      <bbk:Obs TIME_PERIOD="2017-12-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-12-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-12-08" OBS_VALUE="0.53266" BBK_DIFF_A="-0.00845"/>
      <bbk:Obs TIME_PERIOD="2017-12-07" OBS_VALUE="0.54111" BBK_DIFF_A="0.09016"/>
      <bbk:Obs TIME_PERIOD="2017-12-06" OBS_VALUE="0.45095" BBK_DIFF_A="-1.01992"/>
      <bbk:Obs TIME_PERIOD="2017-12-05" OBS_VALUE="1.47087" BBK_DIFF_A="-3.04256"/>
      <bbk:Obs TIME_PERIOD="2017-12-04" OBS_VALUE="4.51343" BBK_DIFF_A="0.07392"/>
      <bbk:Obs TIME_PERIOD="2017-12-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-12-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-12-01" OBS_VALUE="4.43951" BBK_DIFF_A="-0.50019"/>
      <bbk:Obs TIME_PERIOD="2017-11-30" OBS_VALUE="4.9397" BBK_DIFF_A="-0.31607"/>
      <bbk:Obs TIME_PERIOD="2017-11-29" OBS_VALUE="5.25577" BBK_DIFF_A="0.6376"/>
      <bbk:Obs TIME_PERIOD="2017-11-28" OBS_VALUE="4.61817" BBK_DIFF_A="0.48671"/>
      <bbk:Obs TIME_PERIOD="2017-11-27" OBS_VALUE="4.13146" BBK_DIFF_A="-0.04143"/>
      <bbk:Obs TIME_PERIOD="2017-11-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-11-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-11-24" OBS_VALUE="4.17289" BBK_DIFF_A="0.03323"/>
      <bbk:Obs TIME_PERIOD="2017-11-23" OBS_VALUE="4.13966" BBK_DIFF_A="0.05142"/>
      <bbk:Obs TIME_PERIOD="2017-11-22" OBS_VALUE="4.08824" BBK_DIFF_A="-0.1876"/>
      <bbk:Obs TIME_PERIOD="2017-11-21" OBS_VALUE="4.27584" BBK_DIFF_A="0.02403"/>
      <bbk:Obs TIME_PERIOD="2017-11-20" OBS_VALUE="4.25181" BBK_DIFF_A="-0.0908"/>
      <bbk:Obs TIME_PERIOD="2017-11-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-11-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-11-17" OBS_VALUE="4.34261" BBK_DIFF_A="-0.02776"/>
      <bbk:Obs TIME_PERIOD="2017-11-16" OBS_VALUE="4.37037" BBK_DIFF_A="0.05939"/>
      <bbk:Obs TIME_PERIOD="2017-11-15" OBS_VALUE="4.31098" BBK_DIFF_A="0.10028"/>
      <bbk:Obs TIME_PERIOD="2017-11-14" OBS_VALUE="4.2107" BBK_DIFF_A="0.14096"/>
      <bbk:Obs TIME_PERIOD="2017-11-13" OBS_VALUE="4.06974" BBK_DIFF_A="-0.16387"/>
      <bbk:Obs TIME_PERIOD="2017-11-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-11-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-11-10" OBS_VALUE="4.23361" BBK_DIFF_A="0.33764"/>
      <bbk:Obs TIME_PERIOD="2017-11-09" OBS_VALUE="3.89597" BBK_DIFF_A="0.04544"/>
      <bbk:Obs TIME_PERIOD="2017-11-08" OBS_VALUE="3.85053" BBK_DIFF_A="-0.00857"/>
      <bbk:Obs TIME_PERIOD="2017-11-07" OBS_VALUE="3.8591" BBK_DIFF_A="-0.05026"/>
      <bbk:Obs TIME_PERIOD="2017-11-06" OBS_VALUE="3.90936" BBK_DIFF_A="0.0552"/>
      <bbk:Obs TIME_PERIOD="2017-11-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-11-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-11-03" OBS_VALUE="3.85416" BBK_DIFF_A="0.00721"/>
      <bbk:Obs TIME_PERIOD="2017-11-02" OBS_VALUE="3.84695" BBK_DIFF_A="0.06678"/>
      <bbk:Obs TIME_PERIOD="2017-11-01" OBS_VALUE="3.78017" BBK_DIFF_A="-0.05443"/>
      <bbk:Obs TIME_PERIOD="2017-10-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-10-30" OBS_VALUE="3.8346" BBK_DIFF_A="0.24816"/>
      <bbk:Obs TIME_PERIOD="2017-10-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-10-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-10-27" OBS_VALUE="3.58644" BBK_DIFF_A="0.10724"/>
      <bbk:Obs TIME_PERIOD="2017-10-26" OBS_VALUE="3.4792" BBK_DIFF_A="-0.27775"/>
      <bbk:Obs TIME_PERIOD="2017-10-25" OBS_VALUE="3.75695" BBK_DIFF_A="0.28211"/>
      <bbk:Obs TIME_PERIOD="2017-10-24" OBS_VALUE="3.47484" BBK_DIFF_A="-0.18587"/>
      <bbk:Obs TIME_PERIOD="2017-10-23" OBS_VALUE="3.66071" BBK_DIFF_A="-0.00329"/>
      <bbk:Obs TIME_PERIOD="2017-10-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-10-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-10-20" OBS_VALUE="3.664" BBK_DIFF_A="-0.18984"/>
      <bbk:Obs TIME_PERIOD="2017-10-19" OBS_VALUE="3.85384" BBK_DIFF_A="-0.08931"/>
      <bbk:Obs TIME_PERIOD="2017-10-18" OBS_VALUE="3.94315" BBK_DIFF_A="0.03434"/>
      <bbk:Obs TIME_PERIOD="2017-10-17" OBS_VALUE="3.90881" BBK_DIFF_A="-0.02434"/>
      <bbk:Obs TIME_PERIOD="2017-10-16" OBS_VALUE="3.93315" BBK_DIFF_A="0.51065"/>
      <bbk:Obs TIME_PERIOD="2017-10-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-10-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-10-13" OBS_VALUE="3.4225" BBK_DIFF_A="-0.28016"/>
      <bbk:Obs TIME_PERIOD="2017-10-12" OBS_VALUE="3.70266" BBK_DIFF_A="0.25385"/>
      <bbk:Obs TIME_PERIOD="2017-10-11" OBS_VALUE="3.44881" BBK_DIFF_A="1.66696"/>
      <bbk:Obs TIME_PERIOD="2017-10-10" OBS_VALUE="1.78185" BBK_DIFF_A="0.02331"/>
      <bbk:Obs TIME_PERIOD="2017-10-09" OBS_VALUE="1.75854" BBK_DIFF_A="0.25834"/>
      <bbk:Obs TIME_PERIOD="2017-10-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-10-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-10-06" OBS_VALUE="1.5002" BBK_DIFF_A="-0.08455"/>
      <bbk:Obs TIME_PERIOD="2017-10-05" OBS_VALUE="1.58475" BBK_DIFF_A="1.53161"/>
      <bbk:Obs TIME_PERIOD="2017-10-04" OBS_VALUE="0.05314" BBK_DIFF_A="-0.01769"/>
      <bbk:Obs TIME_PERIOD="2017-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-10-02" OBS_VALUE="0.07083" BBK_DIFF_A="0.01189"/>
      <bbk:Obs TIME_PERIOD="2017-10-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-09-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-09-29" OBS_VALUE="0.05894" BBK_DIFF_A="0.04659"/>
      <bbk:Obs TIME_PERIOD="2017-09-28" OBS_VALUE="0.01235" BBK_DIFF_A="-0.01367"/>
      <bbk:Obs TIME_PERIOD="2017-09-27" OBS_VALUE="0.02602" BBK_DIFF_A="-0.44807"/>
      <bbk:Obs TIME_PERIOD="2017-09-26" OBS_VALUE="0.47409" BBK_DIFF_A="-0.10492"/>
      <bbk:Obs TIME_PERIOD="2017-09-25" OBS_VALUE="0.57901" BBK_DIFF_A="0.11712"/>
      <bbk:Obs TIME_PERIOD="2017-09-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-09-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-09-22" OBS_VALUE="0.46189" BBK_DIFF_A="-0.06693"/>
      <bbk:Obs TIME_PERIOD="2017-09-21" OBS_VALUE="0.52882" BBK_DIFF_A="-0.21401"/>
      <bbk:Obs TIME_PERIOD="2017-09-20" OBS_VALUE="0.74283" BBK_DIFF_A="0.21594"/>
      <bbk:Obs TIME_PERIOD="2017-09-19" OBS_VALUE="0.52689" BBK_DIFF_A="0.05158"/>
      <bbk:Obs TIME_PERIOD="2017-09-18" OBS_VALUE="0.47531" BBK_DIFF_A="-1.25186"/>
      <bbk:Obs TIME_PERIOD="2017-09-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-09-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-09-15" OBS_VALUE="1.72717" BBK_DIFF_A="0.06236"/>
      <bbk:Obs TIME_PERIOD="2017-09-14" OBS_VALUE="1.66481" BBK_DIFF_A="-0.02854"/>
      <bbk:Obs TIME_PERIOD="2017-09-13" OBS_VALUE="1.69335" BBK_DIFF_A="-0.02107"/>
      <bbk:Obs TIME_PERIOD="2017-09-12" OBS_VALUE="1.71442" BBK_DIFF_A="-0.01694"/>
      <bbk:Obs TIME_PERIOD="2017-09-11" OBS_VALUE="1.73136" BBK_DIFF_A="0.10948"/>
      <bbk:Obs TIME_PERIOD="2017-09-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-09-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-09-08" OBS_VALUE="1.62188" BBK_DIFF_A="0.4416"/>
      <bbk:Obs TIME_PERIOD="2017-09-07" OBS_VALUE="1.18028" BBK_DIFF_A="-0.94746"/>
      <bbk:Obs TIME_PERIOD="2017-09-06" OBS_VALUE="2.12774" BBK_DIFF_A="0.01455"/>
      <bbk:Obs TIME_PERIOD="2017-09-05" OBS_VALUE="2.11319" BBK_DIFF_A="-0.05819"/>
      <bbk:Obs TIME_PERIOD="2017-09-04" OBS_VALUE="2.17138" BBK_DIFF_A="0.03003"/>
      <bbk:Obs TIME_PERIOD="2017-09-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-09-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-09-01" OBS_VALUE="2.14135" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2017-08-31" OBS_VALUE="2.14135" BBK_DIFF_A="0.00648"/>
      <bbk:Obs TIME_PERIOD="2017-08-30" OBS_VALUE="2.13487" BBK_DIFF_A="-0.02003"/>
      <bbk:Obs TIME_PERIOD="2017-08-29" OBS_VALUE="2.1549" BBK_DIFF_A="-0.01928"/>
      <bbk:Obs TIME_PERIOD="2017-08-28" OBS_VALUE="2.17418" BBK_DIFF_A="0.01786"/>
      <bbk:Obs TIME_PERIOD="2017-08-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-08-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-08-25" OBS_VALUE="2.15632" BBK_DIFF_A="0.0408"/>
      <bbk:Obs TIME_PERIOD="2017-08-24" OBS_VALUE="2.11552" BBK_DIFF_A="-0.0602"/>
      <bbk:Obs TIME_PERIOD="2017-08-23" OBS_VALUE="2.17572" BBK_DIFF_A="0.02179"/>
      <bbk:Obs TIME_PERIOD="2017-08-22" OBS_VALUE="2.15393" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2017-08-21" OBS_VALUE="2.15393" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2017-08-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-08-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-08-18" OBS_VALUE="2.15393" BBK_DIFF_A="-0.00516"/>
      <bbk:Obs TIME_PERIOD="2017-08-17" OBS_VALUE="2.15909" BBK_DIFF_A="6.5E-4"/>
      <bbk:Obs TIME_PERIOD="2017-08-16" OBS_VALUE="2.15844" BBK_DIFF_A="2.06224"/>
      <bbk:Obs TIME_PERIOD="2017-08-15" OBS_VALUE="0.0962" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2017-08-14" OBS_VALUE="0.0962" BBK_DIFF_A="0.06971"/>
      <bbk:Obs TIME_PERIOD="2017-08-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-08-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-08-11" OBS_VALUE="0.02649" BBK_DIFF_A="0.01424"/>
      <bbk:Obs TIME_PERIOD="2017-08-10" OBS_VALUE="0.01225" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2017-08-09" OBS_VALUE="0.01225" BBK_DIFF_A="0.00151"/>
      <bbk:Obs TIME_PERIOD="2017-08-08" OBS_VALUE="0.01074" BBK_DIFF_A="-3.75432"/>
      <bbk:Obs TIME_PERIOD="2017-08-07" OBS_VALUE="3.76506" BBK_DIFF_A="0.08556"/>
      <bbk:Obs TIME_PERIOD="2017-08-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-08-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-08-04" OBS_VALUE="3.6795" BBK_DIFF_A="0.15651"/>
      <bbk:Obs TIME_PERIOD="2017-08-03" OBS_VALUE="3.52299" BBK_DIFF_A="0.05587"/>
      <bbk:Obs TIME_PERIOD="2017-08-02" OBS_VALUE="3.46712" BBK_DIFF_A="0.36401"/>
      <bbk:Obs TIME_PERIOD="2017-08-01" OBS_VALUE="3.10311" BBK_DIFF_A="-0.13275"/>
      <bbk:Obs TIME_PERIOD="2017-07-31" OBS_VALUE="3.23586" BBK_DIFF_A="-0.22187"/>
      <bbk:Obs TIME_PERIOD="2017-07-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-07-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-07-28" OBS_VALUE="3.45773" BBK_DIFF_A="0.04284"/>
      <bbk:Obs TIME_PERIOD="2017-07-27" OBS_VALUE="3.41489" BBK_DIFF_A="-0.02589"/>
      <bbk:Obs TIME_PERIOD="2017-07-26" OBS_VALUE="3.44078" BBK_DIFF_A="0.15252"/>
      <bbk:Obs TIME_PERIOD="2017-07-25" OBS_VALUE="3.28826" BBK_DIFF_A="0.01439"/>
      <bbk:Obs TIME_PERIOD="2017-07-24" OBS_VALUE="3.27387" BBK_DIFF_A="-0.52618"/>
      <bbk:Obs TIME_PERIOD="2017-07-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-07-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-07-21" OBS_VALUE="3.80005" BBK_DIFF_A="0.2239"/>
      <bbk:Obs TIME_PERIOD="2017-07-20" OBS_VALUE="3.57615" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2017-07-19" OBS_VALUE="3.57615" BBK_DIFF_A="-0.16498"/>
      <bbk:Obs TIME_PERIOD="2017-07-18" OBS_VALUE="3.74113" BBK_DIFF_A="0.12981"/>
      <bbk:Obs TIME_PERIOD="2017-07-17" OBS_VALUE="3.61132" BBK_DIFF_A="-0.12142"/>
      <bbk:Obs TIME_PERIOD="2017-07-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-07-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-07-14" OBS_VALUE="3.73274" BBK_DIFF_A="0.20802"/>
      <bbk:Obs TIME_PERIOD="2017-07-13" OBS_VALUE="3.52472" BBK_DIFF_A="-0.17391"/>
      <bbk:Obs TIME_PERIOD="2017-07-12" OBS_VALUE="3.69863" BBK_DIFF_A="-0.27459"/>
      <bbk:Obs TIME_PERIOD="2017-07-11" OBS_VALUE="3.97322" BBK_DIFF_A="-0.33876"/>
      <bbk:Obs TIME_PERIOD="2017-07-10" OBS_VALUE="4.31198" BBK_DIFF_A="-0.0177"/>
      <bbk:Obs TIME_PERIOD="2017-07-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-07-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-07-07" OBS_VALUE="4.32968" BBK_DIFF_A="-0.18175"/>
      <bbk:Obs TIME_PERIOD="2017-07-06" OBS_VALUE="4.51143" BBK_DIFF_A="2.79822"/>
      <bbk:Obs TIME_PERIOD="2017-07-05" OBS_VALUE="1.71321" BBK_DIFF_A="0.08149"/>
      <bbk:Obs TIME_PERIOD="2017-07-04" OBS_VALUE="1.63172" BBK_DIFF_A="0.02185"/>
      <bbk:Obs TIME_PERIOD="2017-07-03" OBS_VALUE="1.60987" BBK_DIFF_A="0.0219"/>
      <bbk:Obs TIME_PERIOD="2017-07-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-07-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-06-30" OBS_VALUE="1.58797" BBK_DIFF_A="-0.06046"/>
      <bbk:Obs TIME_PERIOD="2017-06-29" OBS_VALUE="1.64843" BBK_DIFF_A="-0.03869"/>
      <bbk:Obs TIME_PERIOD="2017-06-28" OBS_VALUE="1.68712" BBK_DIFF_A="0.03601"/>
      <bbk:Obs TIME_PERIOD="2017-06-27" OBS_VALUE="1.65111" BBK_DIFF_A="-0.0373"/>
      <bbk:Obs TIME_PERIOD="2017-06-26" OBS_VALUE="1.68841" BBK_DIFF_A="0.04205"/>
      <bbk:Obs TIME_PERIOD="2017-06-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-06-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-06-23" OBS_VALUE="1.64636" BBK_DIFF_A="-0.06832"/>
      <bbk:Obs TIME_PERIOD="2017-06-22" OBS_VALUE="1.71468" BBK_DIFF_A="0.09436"/>
      <bbk:Obs TIME_PERIOD="2017-06-21" OBS_VALUE="1.62032" BBK_DIFF_A="0.00535"/>
      <bbk:Obs TIME_PERIOD="2017-06-20" OBS_VALUE="1.61497" BBK_DIFF_A="-0.03374"/>
      <bbk:Obs TIME_PERIOD="2017-06-19" OBS_VALUE="1.64871" BBK_DIFF_A="0.13547"/>
      <bbk:Obs TIME_PERIOD="2017-06-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-06-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-06-16" OBS_VALUE="1.51324" BBK_DIFF_A="-0.16208"/>
      <bbk:Obs TIME_PERIOD="2017-06-15" OBS_VALUE="1.67532" BBK_DIFF_A="0.06793"/>
      <bbk:Obs TIME_PERIOD="2017-06-14" OBS_VALUE="1.60739" BBK_DIFF_A="-0.59117"/>
      <bbk:Obs TIME_PERIOD="2017-06-13" OBS_VALUE="2.19856" BBK_DIFF_A="0.00972"/>
      <bbk:Obs TIME_PERIOD="2017-06-12" OBS_VALUE="2.18884" BBK_DIFF_A="0.02489"/>
      <bbk:Obs TIME_PERIOD="2017-06-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-06-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-06-09" OBS_VALUE="2.16395" BBK_DIFF_A="-0.01172"/>
      <bbk:Obs TIME_PERIOD="2017-06-08" OBS_VALUE="2.17567" BBK_DIFF_A="-0.0299"/>
      <bbk:Obs TIME_PERIOD="2017-06-07" OBS_VALUE="2.20557" BBK_DIFF_A="0.04631"/>
      <bbk:Obs TIME_PERIOD="2017-06-06" OBS_VALUE="2.15926" BBK_DIFF_A="0.04944"/>
      <bbk:Obs TIME_PERIOD="2017-06-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-06-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-06-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-06-02" OBS_VALUE="2.10982" BBK_DIFF_A="-0.00752"/>
      <bbk:Obs TIME_PERIOD="2017-06-01" OBS_VALUE="2.11734" BBK_DIFF_A="-3.2E-4"/>
      <bbk:Obs TIME_PERIOD="2017-05-31" OBS_VALUE="2.11766" BBK_DIFF_A="0.00929"/>
      <bbk:Obs TIME_PERIOD="2017-05-30" OBS_VALUE="2.10837" BBK_DIFF_A="-0.00274"/>
      <bbk:Obs TIME_PERIOD="2017-05-29" OBS_VALUE="2.11111" BBK_DIFF_A="0.00572"/>
      <bbk:Obs TIME_PERIOD="2017-05-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-05-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-05-26" OBS_VALUE="2.10539" BBK_DIFF_A="0.00686"/>
      <bbk:Obs TIME_PERIOD="2017-05-25" OBS_VALUE="2.09853" BBK_DIFF_A="0.01872"/>
      <bbk:Obs TIME_PERIOD="2017-05-24" OBS_VALUE="2.07981" BBK_DIFF_A="-0.00793"/>
      <bbk:Obs TIME_PERIOD="2017-05-23" OBS_VALUE="2.08774" BBK_DIFF_A="-0.06804"/>
      <bbk:Obs TIME_PERIOD="2017-05-22" OBS_VALUE="2.15578" BBK_DIFF_A="0.03607"/>
      <bbk:Obs TIME_PERIOD="2017-05-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-05-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-05-19" OBS_VALUE="2.11971" BBK_DIFF_A="0.03156"/>
      <bbk:Obs TIME_PERIOD="2017-05-18" OBS_VALUE="2.08815" BBK_DIFF_A="-0.01218"/>
      <bbk:Obs TIME_PERIOD="2017-05-17" OBS_VALUE="2.10033" BBK_DIFF_A="0.03475"/>
      <bbk:Obs TIME_PERIOD="2017-05-16" OBS_VALUE="2.06558" BBK_DIFF_A="0.02958"/>
      <bbk:Obs TIME_PERIOD="2017-05-15" OBS_VALUE="2.036" BBK_DIFF_A="0.01626"/>
      <bbk:Obs TIME_PERIOD="2017-05-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-05-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-05-12" OBS_VALUE="2.01974" BBK_DIFF_A="0.02118"/>
      <bbk:Obs TIME_PERIOD="2017-05-11" OBS_VALUE="1.99856" BBK_DIFF_A="-0.05363"/>
      <bbk:Obs TIME_PERIOD="2017-05-10" OBS_VALUE="2.05219" BBK_DIFF_A="0.01393"/>
      <bbk:Obs TIME_PERIOD="2017-05-09" OBS_VALUE="2.03826" BBK_DIFF_A="-0.0152"/>
      <bbk:Obs TIME_PERIOD="2017-05-08" OBS_VALUE="2.05346" BBK_DIFF_A="-0.04596"/>
      <bbk:Obs TIME_PERIOD="2017-05-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-05-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-05-05" OBS_VALUE="2.09942" BBK_DIFF_A="-0.01023"/>
      <bbk:Obs TIME_PERIOD="2017-05-04" OBS_VALUE="2.10965" BBK_DIFF_A="-0.05587"/>
      <bbk:Obs TIME_PERIOD="2017-05-03" OBS_VALUE="2.16552" BBK_DIFF_A="0.01513"/>
      <bbk:Obs TIME_PERIOD="2017-05-02" OBS_VALUE="2.15039" BBK_DIFF_A="-0.07415"/>
      <bbk:Obs TIME_PERIOD="2017-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-04-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-04-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-04-28" OBS_VALUE="2.22454" BBK_DIFF_A="0.08025"/>
      <bbk:Obs TIME_PERIOD="2017-04-27" OBS_VALUE="2.14429" BBK_DIFF_A="0.0235"/>
      <bbk:Obs TIME_PERIOD="2017-04-26" OBS_VALUE="2.12079" BBK_DIFF_A="0.00593"/>
      <bbk:Obs TIME_PERIOD="2017-04-25" OBS_VALUE="2.11486" BBK_DIFF_A="0.01619"/>
      <bbk:Obs TIME_PERIOD="2017-04-24" OBS_VALUE="2.09867" BBK_DIFF_A="0.04256"/>
      <bbk:Obs TIME_PERIOD="2017-04-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-04-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-04-21" OBS_VALUE="2.05611" BBK_DIFF_A="0.02964"/>
      <bbk:Obs TIME_PERIOD="2017-04-20" OBS_VALUE="2.02647" BBK_DIFF_A="-0.04849"/>
      <bbk:Obs TIME_PERIOD="2017-04-19" OBS_VALUE="2.07496" BBK_DIFF_A="0.0623"/>
      <bbk:Obs TIME_PERIOD="2017-04-18" OBS_VALUE="2.01266" BBK_DIFF_A="0.01628"/>
      <bbk:Obs TIME_PERIOD="2017-04-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-04-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-04-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-04-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-04-13" OBS_VALUE="1.99638" BBK_DIFF_A="-0.0152"/>
      <bbk:Obs TIME_PERIOD="2017-04-12" OBS_VALUE="2.01158" BBK_DIFF_A="-0.03713"/>
      <bbk:Obs TIME_PERIOD="2017-04-11" OBS_VALUE="2.04871" BBK_DIFF_A="0.00761"/>
      <bbk:Obs TIME_PERIOD="2017-04-10" OBS_VALUE="2.0411" BBK_DIFF_A="0.00984"/>
      <bbk:Obs TIME_PERIOD="2017-04-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-04-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-04-07" OBS_VALUE="2.03126" BBK_DIFF_A="-0.01168"/>
      <bbk:Obs TIME_PERIOD="2017-04-06" OBS_VALUE="2.04294" BBK_DIFF_A="-0.06353"/>
      <bbk:Obs TIME_PERIOD="2017-04-05" OBS_VALUE="2.10647" BBK_DIFF_A="-1.49607"/>
      <bbk:Obs TIME_PERIOD="2017-04-04" OBS_VALUE="3.60254" BBK_DIFF_A="1.82377"/>
      <bbk:Obs TIME_PERIOD="2017-04-03" OBS_VALUE="1.77877" BBK_DIFF_A="-0.06562"/>
      <bbk:Obs TIME_PERIOD="2017-04-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-04-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-03-31" OBS_VALUE="1.84439" BBK_DIFF_A="0.00688"/>
      <bbk:Obs TIME_PERIOD="2017-03-30" OBS_VALUE="1.83751" BBK_DIFF_A="0.00974"/>
      <bbk:Obs TIME_PERIOD="2017-03-29" OBS_VALUE="1.82777" BBK_DIFF_A="-0.04702"/>
      <bbk:Obs TIME_PERIOD="2017-03-28" OBS_VALUE="1.87479" BBK_DIFF_A="0.04762"/>
      <bbk:Obs TIME_PERIOD="2017-03-27" OBS_VALUE="1.82717" BBK_DIFF_A="0.03783"/>
      <bbk:Obs TIME_PERIOD="2017-03-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-03-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-03-24" OBS_VALUE="1.78934" BBK_DIFF_A="-0.02713"/>
      <bbk:Obs TIME_PERIOD="2017-03-23" OBS_VALUE="1.81647" BBK_DIFF_A="0.01812"/>
      <bbk:Obs TIME_PERIOD="2017-03-22" OBS_VALUE="1.79835" BBK_DIFF_A="-0.10523"/>
      <bbk:Obs TIME_PERIOD="2017-03-21" OBS_VALUE="1.90358" BBK_DIFF_A="0.16711"/>
      <bbk:Obs TIME_PERIOD="2017-03-20" OBS_VALUE="1.73647" BBK_DIFF_A="0.03231"/>
      <bbk:Obs TIME_PERIOD="2017-03-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-03-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-03-17" OBS_VALUE="1.70416" BBK_DIFF_A="-0.07367"/>
      <bbk:Obs TIME_PERIOD="2017-03-16" OBS_VALUE="1.77783" BBK_DIFF_A="0.10418"/>
      <bbk:Obs TIME_PERIOD="2017-03-15" OBS_VALUE="1.67365" BBK_DIFF_A="-0.0442"/>
      <bbk:Obs TIME_PERIOD="2017-03-14" OBS_VALUE="1.71785" BBK_DIFF_A="0.01517"/>
      <bbk:Obs TIME_PERIOD="2017-03-13" OBS_VALUE="1.70268" BBK_DIFF_A="-0.10837"/>
      <bbk:Obs TIME_PERIOD="2017-03-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-03-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-03-10" OBS_VALUE="1.81105" BBK_DIFF_A="0.06911"/>
      <bbk:Obs TIME_PERIOD="2017-03-09" OBS_VALUE="1.74194" BBK_DIFF_A="-0.00496"/>
      <bbk:Obs TIME_PERIOD="2017-03-08" OBS_VALUE="1.7469" BBK_DIFF_A="0.00457"/>
      <bbk:Obs TIME_PERIOD="2017-03-07" OBS_VALUE="1.74233" BBK_DIFF_A="-0.02416"/>
      <bbk:Obs TIME_PERIOD="2017-03-06" OBS_VALUE="1.76649" BBK_DIFF_A="0.02296"/>
      <bbk:Obs TIME_PERIOD="2017-03-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-03-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-03-03" OBS_VALUE="1.74353" BBK_DIFF_A="0.00256"/>
      <bbk:Obs TIME_PERIOD="2017-03-02" OBS_VALUE="1.74097" BBK_DIFF_A="0.00233"/>
      <bbk:Obs TIME_PERIOD="2017-03-01" OBS_VALUE="1.73864" BBK_DIFF_A="-0.01915"/>
      <bbk:Obs TIME_PERIOD="2017-02-28" OBS_VALUE="1.75779" BBK_DIFF_A="0.08344"/>
      <bbk:Obs TIME_PERIOD="2017-02-27" OBS_VALUE="1.67435" BBK_DIFF_A="-0.02275"/>
      <bbk:Obs TIME_PERIOD="2017-02-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-02-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-02-24" OBS_VALUE="1.6971" BBK_DIFF_A="-0.02378"/>
      <bbk:Obs TIME_PERIOD="2017-02-23" OBS_VALUE="1.72088" BBK_DIFF_A="-0.02094"/>
      <bbk:Obs TIME_PERIOD="2017-02-22" OBS_VALUE="1.74182" BBK_DIFF_A="-0.3158"/>
      <bbk:Obs TIME_PERIOD="2017-02-21" OBS_VALUE="2.05762" BBK_DIFF_A="-0.07746"/>
      <bbk:Obs TIME_PERIOD="2017-02-20" OBS_VALUE="2.13508" BBK_DIFF_A="-2.21708"/>
      <bbk:Obs TIME_PERIOD="2017-02-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-02-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-02-17" OBS_VALUE="4.35216" BBK_DIFF_A="0.03835"/>
      <bbk:Obs TIME_PERIOD="2017-02-16" OBS_VALUE="4.31381" BBK_DIFF_A="0.19013"/>
      <bbk:Obs TIME_PERIOD="2017-02-15" OBS_VALUE="4.12368" BBK_DIFF_A="-0.16828"/>
      <bbk:Obs TIME_PERIOD="2017-02-14" OBS_VALUE="4.29196" BBK_DIFF_A="-0.03257"/>
      <bbk:Obs TIME_PERIOD="2017-02-13" OBS_VALUE="4.32453" BBK_DIFF_A="-0.05665"/>
      <bbk:Obs TIME_PERIOD="2017-02-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-02-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-02-10" OBS_VALUE="4.38118" BBK_DIFF_A="0.09608"/>
      <bbk:Obs TIME_PERIOD="2017-02-09" OBS_VALUE="4.2851" BBK_DIFF_A="0.32535"/>
      <bbk:Obs TIME_PERIOD="2017-02-08" OBS_VALUE="3.95975" BBK_DIFF_A="2.27441"/>
      <bbk:Obs TIME_PERIOD="2017-02-07" OBS_VALUE="1.68534" BBK_DIFF_A="-0.04437"/>
      <bbk:Obs TIME_PERIOD="2017-02-06" OBS_VALUE="1.72971" BBK_DIFF_A="0.06975"/>
      <bbk:Obs TIME_PERIOD="2017-02-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-02-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-02-03" OBS_VALUE="1.65996" BBK_DIFF_A="0.03241"/>
      <bbk:Obs TIME_PERIOD="2017-02-02" OBS_VALUE="1.62755" BBK_DIFF_A="-0.06438"/>
      <bbk:Obs TIME_PERIOD="2017-02-01" OBS_VALUE="1.69193" BBK_DIFF_A="0.07268"/>
      <bbk:Obs TIME_PERIOD="2017-01-31" OBS_VALUE="1.61925" BBK_DIFF_A="-0.01434"/>
      <bbk:Obs TIME_PERIOD="2017-01-30" OBS_VALUE="1.63359" BBK_DIFF_A="0.0069"/>
      <bbk:Obs TIME_PERIOD="2017-01-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-01-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-01-27" OBS_VALUE="1.62669" BBK_DIFF_A="-0.02533"/>
      <bbk:Obs TIME_PERIOD="2017-01-26" OBS_VALUE="1.65202" BBK_DIFF_A="0.116"/>
      <bbk:Obs TIME_PERIOD="2017-01-25" OBS_VALUE="1.53602" BBK_DIFF_A="-0.02342"/>
      <bbk:Obs TIME_PERIOD="2017-01-24" OBS_VALUE="1.55944" BBK_DIFF_A="-0.03779"/>
      <bbk:Obs TIME_PERIOD="2017-01-23" OBS_VALUE="1.59723" BBK_DIFF_A="0.08748"/>
      <bbk:Obs TIME_PERIOD="2017-01-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-01-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-01-20" OBS_VALUE="1.50975" BBK_DIFF_A="-0.02816"/>
      <bbk:Obs TIME_PERIOD="2017-01-19" OBS_VALUE="1.53791" BBK_DIFF_A="-0.00269"/>
      <bbk:Obs TIME_PERIOD="2017-01-18" OBS_VALUE="1.5406" BBK_DIFF_A="0.02895"/>
      <bbk:Obs TIME_PERIOD="2017-01-17" OBS_VALUE="1.51165" BBK_DIFF_A="0.02074"/>
      <bbk:Obs TIME_PERIOD="2017-01-16" OBS_VALUE="1.49091" BBK_DIFF_A="-0.00992"/>
      <bbk:Obs TIME_PERIOD="2017-01-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-01-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-01-13" OBS_VALUE="1.50083" BBK_DIFF_A="0.15363"/>
      <bbk:Obs TIME_PERIOD="2017-01-12" OBS_VALUE="1.3472" BBK_DIFF_A="0.02959"/>
      <bbk:Obs TIME_PERIOD="2017-01-11" OBS_VALUE="1.31761" BBK_DIFF_A="0.18914"/>
      <bbk:Obs TIME_PERIOD="2017-01-10" OBS_VALUE="1.12847" BBK_DIFF_A="-0.22002"/>
      <bbk:Obs TIME_PERIOD="2017-01-09" OBS_VALUE="1.34849" BBK_DIFF_A="0.24917"/>
      <bbk:Obs TIME_PERIOD="2017-01-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-01-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2017-01-06" OBS_VALUE="1.09932" BBK_DIFF_A="-0.1468"/>
      <bbk:Obs TIME_PERIOD="2017-01-05" OBS_VALUE="1.24612" BBK_DIFF_A="-0.00168"/>
      <bbk:Obs TIME_PERIOD="2017-01-04" OBS_VALUE="1.2478" BBK_DIFF_A="-0.0868"/>
      <bbk:Obs TIME_PERIOD="2017-01-03" OBS_VALUE="1.3346" BBK_DIFF_A="0.02747"/>
      <bbk:Obs TIME_PERIOD="2017-01-02" OBS_VALUE="1.30713" BBK_DIFF_A="-0.02847"/>
      <bbk:Obs TIME_PERIOD="2017-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-12-30" OBS_VALUE="1.3356" BBK_DIFF_A="-0.07088"/>
      <bbk:Obs TIME_PERIOD="2016-12-29" OBS_VALUE="1.40648" BBK_DIFF_A="0.08712"/>
      <bbk:Obs TIME_PERIOD="2016-12-28" OBS_VALUE="1.31936" BBK_DIFF_A="-0.00959"/>
      <bbk:Obs TIME_PERIOD="2016-12-27" OBS_VALUE="1.32895" BBK_DIFF_A="0.02507"/>
      <bbk:Obs TIME_PERIOD="2016-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-12-23" OBS_VALUE="1.30388" BBK_DIFF_A="-0.01251"/>
      <bbk:Obs TIME_PERIOD="2016-12-22" OBS_VALUE="1.31639" BBK_DIFF_A="-0.01434"/>
      <bbk:Obs TIME_PERIOD="2016-12-21" OBS_VALUE="1.33073" BBK_DIFF_A="0.0129"/>
      <bbk:Obs TIME_PERIOD="2016-12-20" OBS_VALUE="1.31783" BBK_DIFF_A="-0.00614"/>
      <bbk:Obs TIME_PERIOD="2016-12-19" OBS_VALUE="1.32397" BBK_DIFF_A="-0.00269"/>
      <bbk:Obs TIME_PERIOD="2016-12-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-12-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-12-16" OBS_VALUE="1.32666" BBK_DIFF_A="-0.02618"/>
      <bbk:Obs TIME_PERIOD="2016-12-15" OBS_VALUE="1.35284" BBK_DIFF_A="0.00416"/>
      <bbk:Obs TIME_PERIOD="2016-12-14" OBS_VALUE="1.34868" BBK_DIFF_A="0.03111"/>
      <bbk:Obs TIME_PERIOD="2016-12-13" OBS_VALUE="1.31757" BBK_DIFF_A="-0.02604"/>
      <bbk:Obs TIME_PERIOD="2016-12-12" OBS_VALUE="1.34361" BBK_DIFF_A="0.01161"/>
      <bbk:Obs TIME_PERIOD="2016-12-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-12-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-12-09" OBS_VALUE="1.332" BBK_DIFF_A="0.00942"/>
      <bbk:Obs TIME_PERIOD="2016-12-08" OBS_VALUE="1.32258" BBK_DIFF_A="-0.00684"/>
      <bbk:Obs TIME_PERIOD="2016-12-07" OBS_VALUE="1.32942" BBK_DIFF_A="-0.027"/>
      <bbk:Obs TIME_PERIOD="2016-12-06" OBS_VALUE="1.35642" BBK_DIFF_A="-0.01178"/>
      <bbk:Obs TIME_PERIOD="2016-12-05" OBS_VALUE="1.3682" BBK_DIFF_A="0.03346"/>
      <bbk:Obs TIME_PERIOD="2016-12-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-12-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-12-02" OBS_VALUE="1.33474" BBK_DIFF_A="-3.35056"/>
      <bbk:Obs TIME_PERIOD="2016-12-01" OBS_VALUE="4.6853" BBK_DIFF_A="-0.34614"/>
      <bbk:Obs TIME_PERIOD="2016-11-30" OBS_VALUE="5.03144" BBK_DIFF_A="0.17052"/>
      <bbk:Obs TIME_PERIOD="2016-11-29" OBS_VALUE="4.86092" BBK_DIFF_A="0.34937"/>
      <bbk:Obs TIME_PERIOD="2016-11-28" OBS_VALUE="4.51155" BBK_DIFF_A="0.08035"/>
      <bbk:Obs TIME_PERIOD="2016-11-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-11-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-11-25" OBS_VALUE="4.4312" BBK_DIFF_A="-0.12431"/>
      <bbk:Obs TIME_PERIOD="2016-11-24" OBS_VALUE="4.55551" BBK_DIFF_A="0.23963"/>
      <bbk:Obs TIME_PERIOD="2016-11-23" OBS_VALUE="4.31588" BBK_DIFF_A="2.67334"/>
      <bbk:Obs TIME_PERIOD="2016-11-22" OBS_VALUE="1.64254" BBK_DIFF_A="-0.05114"/>
      <bbk:Obs TIME_PERIOD="2016-11-21" OBS_VALUE="1.69368" BBK_DIFF_A="0.03789"/>
      <bbk:Obs TIME_PERIOD="2016-11-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-11-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-11-18" OBS_VALUE="1.65579" BBK_DIFF_A="-0.00703"/>
      <bbk:Obs TIME_PERIOD="2016-11-17" OBS_VALUE="1.66282" BBK_DIFF_A="-0.00352"/>
      <bbk:Obs TIME_PERIOD="2016-11-16" OBS_VALUE="1.66634" BBK_DIFF_A="-0.01293"/>
      <bbk:Obs TIME_PERIOD="2016-11-15" OBS_VALUE="1.67927" BBK_DIFF_A="-0.09191"/>
      <bbk:Obs TIME_PERIOD="2016-11-14" OBS_VALUE="1.77118" BBK_DIFF_A="0.10732"/>
      <bbk:Obs TIME_PERIOD="2016-11-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-11-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-11-11" OBS_VALUE="1.66386" BBK_DIFF_A="-0.06251"/>
      <bbk:Obs TIME_PERIOD="2016-11-10" OBS_VALUE="1.72637" BBK_DIFF_A="-0.46332"/>
      <bbk:Obs TIME_PERIOD="2016-11-09" OBS_VALUE="2.18969" BBK_DIFF_A="0.01109"/>
      <bbk:Obs TIME_PERIOD="2016-11-08" OBS_VALUE="2.1786" BBK_DIFF_A="0.00974"/>
      <bbk:Obs TIME_PERIOD="2016-11-07" OBS_VALUE="2.16886" BBK_DIFF_A="-0.05265"/>
      <bbk:Obs TIME_PERIOD="2016-11-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-11-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-11-04" OBS_VALUE="2.22151" BBK_DIFF_A="-0.02708"/>
      <bbk:Obs TIME_PERIOD="2016-11-03" OBS_VALUE="2.24859" BBK_DIFF_A="-0.05879"/>
      <bbk:Obs TIME_PERIOD="2016-11-02" OBS_VALUE="2.30738" BBK_DIFF_A="4.6E-4"/>
      <bbk:Obs TIME_PERIOD="2016-11-01" OBS_VALUE="2.30692" BBK_DIFF_A="-0.00603"/>
      <bbk:Obs TIME_PERIOD="2016-10-31" OBS_VALUE="2.31295" BBK_DIFF_A="-0.03322"/>
      <bbk:Obs TIME_PERIOD="2016-10-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-10-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-10-28" OBS_VALUE="2.34617" BBK_DIFF_A="-0.08689"/>
      <bbk:Obs TIME_PERIOD="2016-10-27" OBS_VALUE="2.43306" BBK_DIFF_A="0.01652"/>
      <bbk:Obs TIME_PERIOD="2016-10-26" OBS_VALUE="2.41654" BBK_DIFF_A="-0.02885"/>
      <bbk:Obs TIME_PERIOD="2016-10-25" OBS_VALUE="2.44539" BBK_DIFF_A="-0.01133"/>
      <bbk:Obs TIME_PERIOD="2016-10-24" OBS_VALUE="2.45672" BBK_DIFF_A="0.72123"/>
      <bbk:Obs TIME_PERIOD="2016-10-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-10-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-10-21" OBS_VALUE="1.73549" BBK_DIFF_A="0.04625"/>
      <bbk:Obs TIME_PERIOD="2016-10-20" OBS_VALUE="1.68924" BBK_DIFF_A="0.08833"/>
      <bbk:Obs TIME_PERIOD="2016-10-19" OBS_VALUE="1.60091" BBK_DIFF_A="-0.05667"/>
      <bbk:Obs TIME_PERIOD="2016-10-18" OBS_VALUE="1.65758" BBK_DIFF_A="0.19531"/>
      <bbk:Obs TIME_PERIOD="2016-10-17" OBS_VALUE="1.46227" BBK_DIFF_A="0.13355"/>
      <bbk:Obs TIME_PERIOD="2016-10-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-10-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-10-14" OBS_VALUE="1.32872" BBK_DIFF_A="0.23399"/>
      <bbk:Obs TIME_PERIOD="2016-10-13" OBS_VALUE="1.09473" BBK_DIFF_A="0.07776"/>
      <bbk:Obs TIME_PERIOD="2016-10-12" OBS_VALUE="1.01697" BBK_DIFF_A="-0.04482"/>
      <bbk:Obs TIME_PERIOD="2016-10-11" OBS_VALUE="1.06179" BBK_DIFF_A="-0.00323"/>
      <bbk:Obs TIME_PERIOD="2016-10-10" OBS_VALUE="1.06502" BBK_DIFF_A="-0.04289"/>
      <bbk:Obs TIME_PERIOD="2016-10-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-10-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-10-07" OBS_VALUE="1.10791" BBK_DIFF_A="-0.19776"/>
      <bbk:Obs TIME_PERIOD="2016-10-06" OBS_VALUE="1.30567" BBK_DIFF_A="-0.21707"/>
      <bbk:Obs TIME_PERIOD="2016-10-05" OBS_VALUE="1.52274" BBK_DIFF_A="-0.30776"/>
      <bbk:Obs TIME_PERIOD="2016-10-04" OBS_VALUE="1.8305" BBK_DIFF_A="0.02863"/>
      <bbk:Obs TIME_PERIOD="2016-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-10-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-10-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-09-30" OBS_VALUE="1.80187" BBK_DIFF_A="0.05615"/>
      <bbk:Obs TIME_PERIOD="2016-09-29" OBS_VALUE="1.74572" BBK_DIFF_A="-0.00684"/>
      <bbk:Obs TIME_PERIOD="2016-09-28" OBS_VALUE="1.75256" BBK_DIFF_A="-0.05604"/>
      <bbk:Obs TIME_PERIOD="2016-09-27" OBS_VALUE="1.8086" BBK_DIFF_A="0.21816"/>
      <bbk:Obs TIME_PERIOD="2016-09-26" OBS_VALUE="1.59044" BBK_DIFF_A="0.01647"/>
      <bbk:Obs TIME_PERIOD="2016-09-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-09-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-09-23" OBS_VALUE="1.57397" BBK_DIFF_A="-0.20499"/>
      <bbk:Obs TIME_PERIOD="2016-09-22" OBS_VALUE="1.77896" BBK_DIFF_A="0.0071"/>
      <bbk:Obs TIME_PERIOD="2016-09-21" OBS_VALUE="1.77186" BBK_DIFF_A="0.04177"/>
      <bbk:Obs TIME_PERIOD="2016-09-20" OBS_VALUE="1.73009" BBK_DIFF_A="-0.05035"/>
      <bbk:Obs TIME_PERIOD="2016-09-19" OBS_VALUE="1.78044" BBK_DIFF_A="0.16078"/>
      <bbk:Obs TIME_PERIOD="2016-09-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-09-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-09-16" OBS_VALUE="1.61966" BBK_DIFF_A="-0.15215"/>
      <bbk:Obs TIME_PERIOD="2016-09-15" OBS_VALUE="1.77181" BBK_DIFF_A="-0.00531"/>
      <bbk:Obs TIME_PERIOD="2016-09-14" OBS_VALUE="1.77712" BBK_DIFF_A="0.09385"/>
      <bbk:Obs TIME_PERIOD="2016-09-13" OBS_VALUE="1.68327" BBK_DIFF_A="-0.08617"/>
      <bbk:Obs TIME_PERIOD="2016-09-12" OBS_VALUE="1.76944" BBK_DIFF_A="-0.01364"/>
      <bbk:Obs TIME_PERIOD="2016-09-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-09-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-09-09" OBS_VALUE="1.78308" BBK_DIFF_A="0.01606"/>
      <bbk:Obs TIME_PERIOD="2016-09-08" OBS_VALUE="1.76702" BBK_DIFF_A="0.01949"/>
      <bbk:Obs TIME_PERIOD="2016-09-07" OBS_VALUE="1.74753" BBK_DIFF_A="0.1052"/>
      <bbk:Obs TIME_PERIOD="2016-09-06" OBS_VALUE="1.64233" BBK_DIFF_A="-0.27496"/>
      <bbk:Obs TIME_PERIOD="2016-09-05" OBS_VALUE="1.91729" BBK_DIFF_A="0.05903"/>
      <bbk:Obs TIME_PERIOD="2016-09-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-09-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-09-02" OBS_VALUE="1.85826" BBK_DIFF_A="0.03052"/>
      <bbk:Obs TIME_PERIOD="2016-09-01" OBS_VALUE="1.82774" BBK_DIFF_A="0.01951"/>
      <bbk:Obs TIME_PERIOD="2016-08-31" OBS_VALUE="1.80823" BBK_DIFF_A="-0.05458"/>
      <bbk:Obs TIME_PERIOD="2016-08-30" OBS_VALUE="1.86281" BBK_DIFF_A="-0.02384"/>
      <bbk:Obs TIME_PERIOD="2016-08-29" OBS_VALUE="1.88665" BBK_DIFF_A="-0.00121"/>
      <bbk:Obs TIME_PERIOD="2016-08-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-08-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-08-26" OBS_VALUE="1.88786" BBK_DIFF_A="0.08425"/>
      <bbk:Obs TIME_PERIOD="2016-08-25" OBS_VALUE="1.80361" BBK_DIFF_A="0.03266"/>
      <bbk:Obs TIME_PERIOD="2016-08-24" OBS_VALUE="1.77095" BBK_DIFF_A="0.07669"/>
      <bbk:Obs TIME_PERIOD="2016-08-23" OBS_VALUE="1.69426" BBK_DIFF_A="0.10583"/>
      <bbk:Obs TIME_PERIOD="2016-08-22" OBS_VALUE="1.58843" BBK_DIFF_A="-0.17101"/>
      <bbk:Obs TIME_PERIOD="2016-08-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-08-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-08-19" OBS_VALUE="1.75944" BBK_DIFF_A="0.06537"/>
      <bbk:Obs TIME_PERIOD="2016-08-18" OBS_VALUE="1.69407" BBK_DIFF_A="-0.0508"/>
      <bbk:Obs TIME_PERIOD="2016-08-17" OBS_VALUE="1.74487" BBK_DIFF_A="0.03275"/>
      <bbk:Obs TIME_PERIOD="2016-08-16" OBS_VALUE="1.71212" BBK_DIFF_A="-0.02872"/>
      <bbk:Obs TIME_PERIOD="2016-08-15" OBS_VALUE="1.74084" BBK_DIFF_A="0.036"/>
      <bbk:Obs TIME_PERIOD="2016-08-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-08-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-08-12" OBS_VALUE="1.70484" BBK_DIFF_A="0.08169"/>
      <bbk:Obs TIME_PERIOD="2016-08-11" OBS_VALUE="1.62315" BBK_DIFF_A="-0.11572"/>
      <bbk:Obs TIME_PERIOD="2016-08-10" OBS_VALUE="1.73887" BBK_DIFF_A="0.09665"/>
      <bbk:Obs TIME_PERIOD="2016-08-09" OBS_VALUE="1.64222" BBK_DIFF_A="0.0505"/>
      <bbk:Obs TIME_PERIOD="2016-08-08" OBS_VALUE="1.59172" BBK_DIFF_A="0.22555"/>
      <bbk:Obs TIME_PERIOD="2016-08-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-08-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-08-05" OBS_VALUE="1.36617" BBK_DIFF_A="0.12549"/>
      <bbk:Obs TIME_PERIOD="2016-08-04" OBS_VALUE="1.24068" BBK_DIFF_A="-1.12603"/>
      <bbk:Obs TIME_PERIOD="2016-08-03" OBS_VALUE="2.36671" BBK_DIFF_A="-0.02603"/>
      <bbk:Obs TIME_PERIOD="2016-08-02" OBS_VALUE="2.39274" BBK_DIFF_A="-0.03177"/>
      <bbk:Obs TIME_PERIOD="2016-08-01" OBS_VALUE="2.42451" BBK_DIFF_A="0.03966"/>
      <bbk:Obs TIME_PERIOD="2016-07-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-07-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-07-29" OBS_VALUE="2.38485" BBK_DIFF_A="0.42688"/>
      <bbk:Obs TIME_PERIOD="2016-07-28" OBS_VALUE="1.95797" BBK_DIFF_A="0.11832"/>
      <bbk:Obs TIME_PERIOD="2016-07-27" OBS_VALUE="1.83965" BBK_DIFF_A="-0.0156"/>
      <bbk:Obs TIME_PERIOD="2016-07-26" OBS_VALUE="1.85525" BBK_DIFF_A="0.00227"/>
      <bbk:Obs TIME_PERIOD="2016-07-25" OBS_VALUE="1.85298" BBK_DIFF_A="-0.04223"/>
      <bbk:Obs TIME_PERIOD="2016-07-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-07-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-07-22" OBS_VALUE="1.89521" BBK_DIFF_A="0.03696"/>
      <bbk:Obs TIME_PERIOD="2016-07-21" OBS_VALUE="1.85825" BBK_DIFF_A="-0.02073"/>
      <bbk:Obs TIME_PERIOD="2016-07-20" OBS_VALUE="1.87898" BBK_DIFF_A="0.00172"/>
      <bbk:Obs TIME_PERIOD="2016-07-19" OBS_VALUE="1.87726" BBK_DIFF_A="0.03173"/>
      <bbk:Obs TIME_PERIOD="2016-07-18" OBS_VALUE="1.84553" BBK_DIFF_A="0.00455"/>
      <bbk:Obs TIME_PERIOD="2016-07-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-07-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-07-15" OBS_VALUE="1.84098" BBK_DIFF_A="-0.00459"/>
      <bbk:Obs TIME_PERIOD="2016-07-14" OBS_VALUE="1.84557" BBK_DIFF_A="0.006"/>
      <bbk:Obs TIME_PERIOD="2016-07-13" OBS_VALUE="1.83957" BBK_DIFF_A="-0.12631"/>
      <bbk:Obs TIME_PERIOD="2016-07-12" OBS_VALUE="1.96588" BBK_DIFF_A="-0.19453"/>
      <bbk:Obs TIME_PERIOD="2016-07-11" OBS_VALUE="2.16041" BBK_DIFF_A="0.12345"/>
      <bbk:Obs TIME_PERIOD="2016-07-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-07-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-07-08" OBS_VALUE="2.03696" BBK_DIFF_A="8.4E-4"/>
      <bbk:Obs TIME_PERIOD="2016-07-07" OBS_VALUE="2.03612" BBK_DIFF_A="-0.03396"/>
      <bbk:Obs TIME_PERIOD="2016-07-06" OBS_VALUE="2.07008" BBK_DIFF_A="0.10039"/>
      <bbk:Obs TIME_PERIOD="2016-07-05" OBS_VALUE="1.96969" BBK_DIFF_A="-0.09053"/>
      <bbk:Obs TIME_PERIOD="2016-07-04" OBS_VALUE="2.06022" BBK_DIFF_A="0.13884"/>
      <bbk:Obs TIME_PERIOD="2016-07-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-07-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-07-01" OBS_VALUE="1.92138" BBK_DIFF_A="0.023"/>
      <bbk:Obs TIME_PERIOD="2016-06-30" OBS_VALUE="1.89838" BBK_DIFF_A="-0.03831"/>
      <bbk:Obs TIME_PERIOD="2016-06-29" OBS_VALUE="1.93669" BBK_DIFF_A="-0.0679"/>
      <bbk:Obs TIME_PERIOD="2016-06-28" OBS_VALUE="2.00459" BBK_DIFF_A="0.13386"/>
      <bbk:Obs TIME_PERIOD="2016-06-27" OBS_VALUE="1.87073" BBK_DIFF_A="0.03506"/>
      <bbk:Obs TIME_PERIOD="2016-06-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-06-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-06-24" OBS_VALUE="1.83567" BBK_DIFF_A="-0.04618"/>
      <bbk:Obs TIME_PERIOD="2016-06-23" OBS_VALUE="1.88185" BBK_DIFF_A="-0.05486"/>
      <bbk:Obs TIME_PERIOD="2016-06-22" OBS_VALUE="1.93671" BBK_DIFF_A="-0.08131"/>
      <bbk:Obs TIME_PERIOD="2016-06-21" OBS_VALUE="2.01802" BBK_DIFF_A="-0.15449"/>
      <bbk:Obs TIME_PERIOD="2016-06-20" OBS_VALUE="2.17251" BBK_DIFF_A="0.27589"/>
      <bbk:Obs TIME_PERIOD="2016-06-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-06-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-06-17" OBS_VALUE="1.89662" BBK_DIFF_A="-0.12696"/>
      <bbk:Obs TIME_PERIOD="2016-06-16" OBS_VALUE="2.02358" BBK_DIFF_A="-0.23787"/>
      <bbk:Obs TIME_PERIOD="2016-06-15" OBS_VALUE="2.26145" BBK_DIFF_A="-0.06907"/>
      <bbk:Obs TIME_PERIOD="2016-06-14" OBS_VALUE="2.33052" BBK_DIFF_A="0.01427"/>
      <bbk:Obs TIME_PERIOD="2016-06-13" OBS_VALUE="2.31625" BBK_DIFF_A="0.04761"/>
      <bbk:Obs TIME_PERIOD="2016-06-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-06-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-06-10" OBS_VALUE="2.26864" BBK_DIFF_A="-0.16653"/>
      <bbk:Obs TIME_PERIOD="2016-06-09" OBS_VALUE="2.43517" BBK_DIFF_A="0.1795"/>
      <bbk:Obs TIME_PERIOD="2016-06-08" OBS_VALUE="2.25567" BBK_DIFF_A="0.13639"/>
      <bbk:Obs TIME_PERIOD="2016-06-07" OBS_VALUE="2.11928" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2016-06-06" OBS_VALUE="2.11928" BBK_DIFF_A="-0.03086"/>
      <bbk:Obs TIME_PERIOD="2016-06-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-06-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-06-03" OBS_VALUE="2.15014" BBK_DIFF_A="0.2058"/>
      <bbk:Obs TIME_PERIOD="2016-06-02" OBS_VALUE="1.94434" BBK_DIFF_A="-0.04371"/>
      <bbk:Obs TIME_PERIOD="2016-06-01" OBS_VALUE="1.98805" BBK_DIFF_A="0.04202"/>
      <bbk:Obs TIME_PERIOD="2016-05-31" OBS_VALUE="1.94603" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2016-05-30" OBS_VALUE="1.94603" BBK_DIFF_A="-0.04827"/>
      <bbk:Obs TIME_PERIOD="2016-05-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-05-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-05-27" OBS_VALUE="1.9943" BBK_DIFF_A="0.00187"/>
      <bbk:Obs TIME_PERIOD="2016-05-26" OBS_VALUE="1.99243" BBK_DIFF_A="-0.15729"/>
      <bbk:Obs TIME_PERIOD="2016-05-25" OBS_VALUE="2.14972" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2016-05-24" OBS_VALUE="2.14972" BBK_DIFF_A="-0.05835"/>
      <bbk:Obs TIME_PERIOD="2016-05-23" OBS_VALUE="2.20807" BBK_DIFF_A="0.17721"/>
      <bbk:Obs TIME_PERIOD="2016-05-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-05-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-05-20" OBS_VALUE="2.03086" BBK_DIFF_A="0.03834"/>
      <bbk:Obs TIME_PERIOD="2016-05-19" OBS_VALUE="1.99252" BBK_DIFF_A="0.0373"/>
      <bbk:Obs TIME_PERIOD="2016-05-18" OBS_VALUE="1.95522" BBK_DIFF_A="-0.06297"/>
      <bbk:Obs TIME_PERIOD="2016-05-17" OBS_VALUE="2.01819" BBK_DIFF_A="-0.14002"/>
      <bbk:Obs TIME_PERIOD="2016-05-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-05-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-05-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-05-13" OBS_VALUE="2.15821" BBK_DIFF_A="0.17736"/>
      <bbk:Obs TIME_PERIOD="2016-05-12" OBS_VALUE="1.98085" BBK_DIFF_A="-0.05545"/>
      <bbk:Obs TIME_PERIOD="2016-05-11" OBS_VALUE="2.0363" BBK_DIFF_A="0.04838"/>
      <bbk:Obs TIME_PERIOD="2016-05-10" OBS_VALUE="1.98792" BBK_DIFF_A="-0.17668"/>
      <bbk:Obs TIME_PERIOD="2016-05-09" OBS_VALUE="2.1646" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2016-05-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-05-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-05-06" OBS_VALUE="2.1646" BBK_DIFF_A="0.20713"/>
      <bbk:Obs TIME_PERIOD="2016-05-05" OBS_VALUE="1.95747" BBK_DIFF_A="0.05037"/>
      <bbk:Obs TIME_PERIOD="2016-05-04" OBS_VALUE="1.9071" BBK_DIFF_A="0.02179"/>
      <bbk:Obs TIME_PERIOD="2016-05-03" OBS_VALUE="1.88531" BBK_DIFF_A="0.0287"/>
      <bbk:Obs TIME_PERIOD="2016-05-02" OBS_VALUE="1.85661" BBK_DIFF_A="-0.05347"/>
      <bbk:Obs TIME_PERIOD="2016-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-04-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-04-29" OBS_VALUE="1.91008" BBK_DIFF_A="-0.0509"/>
      <bbk:Obs TIME_PERIOD="2016-04-28" OBS_VALUE="1.96098" BBK_DIFF_A="0.11282"/>
      <bbk:Obs TIME_PERIOD="2016-04-27" OBS_VALUE="1.84816" BBK_DIFF_A="-0.01776"/>
      <bbk:Obs TIME_PERIOD="2016-04-26" OBS_VALUE="1.86592" BBK_DIFF_A="-0.02766"/>
      <bbk:Obs TIME_PERIOD="2016-04-25" OBS_VALUE="1.89358" BBK_DIFF_A="0.03196"/>
      <bbk:Obs TIME_PERIOD="2016-04-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-04-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-04-22" OBS_VALUE="1.86162" BBK_DIFF_A="-0.03247"/>
      <bbk:Obs TIME_PERIOD="2016-04-21" OBS_VALUE="1.89409" BBK_DIFF_A="0.01063"/>
      <bbk:Obs TIME_PERIOD="2016-04-20" OBS_VALUE="1.88346" BBK_DIFF_A="0.00763"/>
      <bbk:Obs TIME_PERIOD="2016-04-19" OBS_VALUE="1.87583" BBK_DIFF_A="-0.00957"/>
      <bbk:Obs TIME_PERIOD="2016-04-18" OBS_VALUE="1.8854" BBK_DIFF_A="-0.0168"/>
      <bbk:Obs TIME_PERIOD="2016-04-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-04-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-04-15" OBS_VALUE="1.9022" BBK_DIFF_A="-0.01208"/>
      <bbk:Obs TIME_PERIOD="2016-04-14" OBS_VALUE="1.91428" BBK_DIFF_A="-0.13533"/>
      <bbk:Obs TIME_PERIOD="2016-04-13" OBS_VALUE="2.04961" BBK_DIFF_A="0.04816"/>
      <bbk:Obs TIME_PERIOD="2016-04-12" OBS_VALUE="2.00145" BBK_DIFF_A="0.08751"/>
      <bbk:Obs TIME_PERIOD="2016-04-11" OBS_VALUE="1.91394" BBK_DIFF_A="0.02344"/>
      <bbk:Obs TIME_PERIOD="2016-04-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-04-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-04-08" OBS_VALUE="1.8905" BBK_DIFF_A="0.01153"/>
      <bbk:Obs TIME_PERIOD="2016-04-07" OBS_VALUE="1.87897" BBK_DIFF_A="-0.10666"/>
      <bbk:Obs TIME_PERIOD="2016-04-06" OBS_VALUE="1.98563" BBK_DIFF_A="1.75313"/>
      <bbk:Obs TIME_PERIOD="2016-04-05" OBS_VALUE="0.2325" BBK_DIFF_A="0.0025"/>
      <bbk:Obs TIME_PERIOD="2016-04-04" OBS_VALUE="0.23" BBK_DIFF_A="-7.19522"/>
      <bbk:Obs TIME_PERIOD="2016-04-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-04-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-04-01" OBS_VALUE="7.42522" BBK_DIFF_A="-0.14061"/>
      <bbk:Obs TIME_PERIOD="2016-03-31" OBS_VALUE="7.56583" BBK_DIFF_A="-0.00626"/>
      <bbk:Obs TIME_PERIOD="2016-03-30" OBS_VALUE="7.57209" BBK_DIFF_A="0.0749"/>
      <bbk:Obs TIME_PERIOD="2016-03-29" OBS_VALUE="7.49719" BBK_DIFF_A="0.04683"/>
      <bbk:Obs TIME_PERIOD="2016-03-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-03-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-03-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-03-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-03-24" OBS_VALUE="7.45036" BBK_DIFF_A="-0.12571"/>
      <bbk:Obs TIME_PERIOD="2016-03-23" OBS_VALUE="7.57607" BBK_DIFF_A="-0.02087"/>
      <bbk:Obs TIME_PERIOD="2016-03-22" OBS_VALUE="7.59694" BBK_DIFF_A="-0.00444"/>
      <bbk:Obs TIME_PERIOD="2016-03-21" OBS_VALUE="7.60138" BBK_DIFF_A="-0.00139"/>
      <bbk:Obs TIME_PERIOD="2016-03-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-03-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-03-18" OBS_VALUE="7.60277" BBK_DIFF_A="-0.19302"/>
      <bbk:Obs TIME_PERIOD="2016-03-17" OBS_VALUE="7.79579" BBK_DIFF_A="0.13533"/>
      <bbk:Obs TIME_PERIOD="2016-03-16" OBS_VALUE="7.66046" BBK_DIFF_A="0.03019"/>
      <bbk:Obs TIME_PERIOD="2016-03-15" OBS_VALUE="7.63027" BBK_DIFF_A="0.00978"/>
      <bbk:Obs TIME_PERIOD="2016-03-14" OBS_VALUE="7.62049" BBK_DIFF_A="-0.18292"/>
      <bbk:Obs TIME_PERIOD="2016-03-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-03-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-03-11" OBS_VALUE="7.80341" BBK_DIFF_A="0.53662"/>
      <bbk:Obs TIME_PERIOD="2016-03-10" OBS_VALUE="7.26679" BBK_DIFF_A="-0.13001"/>
      <bbk:Obs TIME_PERIOD="2016-03-09" OBS_VALUE="7.3968" BBK_DIFF_A="0.10898"/>
      <bbk:Obs TIME_PERIOD="2016-03-08" OBS_VALUE="7.28782" BBK_DIFF_A="1.05602"/>
      <bbk:Obs TIME_PERIOD="2016-03-07" OBS_VALUE="6.2318" BBK_DIFF_A="-0.03642"/>
      <bbk:Obs TIME_PERIOD="2016-03-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-03-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-03-04" OBS_VALUE="6.26822" BBK_DIFF_A="0.0715"/>
      <bbk:Obs TIME_PERIOD="2016-03-03" OBS_VALUE="6.19672" BBK_DIFF_A="-0.03726"/>
      <bbk:Obs TIME_PERIOD="2016-03-02" OBS_VALUE="6.23398" BBK_DIFF_A="-0.05415"/>
      <bbk:Obs TIME_PERIOD="2016-03-01" OBS_VALUE="6.28813" BBK_DIFF_A="0.3158"/>
      <bbk:Obs TIME_PERIOD="2016-02-29" OBS_VALUE="5.97233" BBK_DIFF_A="-0.24465"/>
      <bbk:Obs TIME_PERIOD="2016-02-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-02-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-02-26" OBS_VALUE="6.21698" BBK_DIFF_A="-0.10723"/>
      <bbk:Obs TIME_PERIOD="2016-02-25" OBS_VALUE="6.32421" BBK_DIFF_A="0.11811"/>
      <bbk:Obs TIME_PERIOD="2016-02-24" OBS_VALUE="6.2061" BBK_DIFF_A="-0.02923"/>
      <bbk:Obs TIME_PERIOD="2016-02-23" OBS_VALUE="6.23533" BBK_DIFF_A="0.10371"/>
      <bbk:Obs TIME_PERIOD="2016-02-22" OBS_VALUE="6.13162" BBK_DIFF_A="-0.11102"/>
      <bbk:Obs TIME_PERIOD="2016-02-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-02-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-02-19" OBS_VALUE="6.24264" BBK_DIFF_A="0.05303"/>
      <bbk:Obs TIME_PERIOD="2016-02-18" OBS_VALUE="6.18961" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2016-02-17" OBS_VALUE="6.18961" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2016-02-16" OBS_VALUE="6.18961" BBK_DIFF_A="0.10739"/>
      <bbk:Obs TIME_PERIOD="2016-02-15" OBS_VALUE="6.08222" BBK_DIFF_A="0.02933"/>
      <bbk:Obs TIME_PERIOD="2016-02-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-02-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-02-12" OBS_VALUE="6.05289" BBK_DIFF_A="0.49674"/>
      <bbk:Obs TIME_PERIOD="2016-02-11" OBS_VALUE="5.55615" BBK_DIFF_A="-0.05918"/>
      <bbk:Obs TIME_PERIOD="2016-02-10" OBS_VALUE="5.61533" BBK_DIFF_A="-2.55914"/>
      <bbk:Obs TIME_PERIOD="2016-02-09" OBS_VALUE="8.17447" BBK_DIFF_A="1.04244"/>
      <bbk:Obs TIME_PERIOD="2016-02-08" OBS_VALUE="7.13203" BBK_DIFF_A="-0.19761"/>
      <bbk:Obs TIME_PERIOD="2016-02-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-02-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-02-05" OBS_VALUE="7.32964" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2016-02-04" OBS_VALUE="7.32964" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2016-02-03" OBS_VALUE="7.32964" BBK_DIFF_A="0.09218"/>
      <bbk:Obs TIME_PERIOD="2016-02-02" OBS_VALUE="7.23746" BBK_DIFF_A="0.05211"/>
      <bbk:Obs TIME_PERIOD="2016-02-01" OBS_VALUE="7.18535" BBK_DIFF_A="0.07033"/>
      <bbk:Obs TIME_PERIOD="2016-01-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-01-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-01-29" OBS_VALUE="7.11502" BBK_DIFF_A="-0.11048"/>
      <bbk:Obs TIME_PERIOD="2016-01-28" OBS_VALUE="7.2255" BBK_DIFF_A="1.1048"/>
      <bbk:Obs TIME_PERIOD="2016-01-27" OBS_VALUE="6.1207" BBK_DIFF_A="0.13314"/>
      <bbk:Obs TIME_PERIOD="2016-01-26" OBS_VALUE="5.98756" BBK_DIFF_A="-0.09363"/>
      <bbk:Obs TIME_PERIOD="2016-01-25" OBS_VALUE="6.08119" BBK_DIFF_A="-0.0343"/>
      <bbk:Obs TIME_PERIOD="2016-01-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-01-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-01-22" OBS_VALUE="6.11549" BBK_DIFF_A="-0.12004"/>
      <bbk:Obs TIME_PERIOD="2016-01-21" OBS_VALUE="6.23553" BBK_DIFF_A="-0.02138"/>
      <bbk:Obs TIME_PERIOD="2016-01-20" OBS_VALUE="6.25691" BBK_DIFF_A="0.08712"/>
      <bbk:Obs TIME_PERIOD="2016-01-19" OBS_VALUE="6.16979" BBK_DIFF_A="0.31605"/>
      <bbk:Obs TIME_PERIOD="2016-01-18" OBS_VALUE="5.85374" BBK_DIFF_A="0.00595"/>
      <bbk:Obs TIME_PERIOD="2016-01-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-01-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-01-15" OBS_VALUE="5.84779" BBK_DIFF_A="0.20647"/>
      <bbk:Obs TIME_PERIOD="2016-01-14" OBS_VALUE="5.64132" BBK_DIFF_A="-0.61319"/>
      <bbk:Obs TIME_PERIOD="2016-01-13" OBS_VALUE="6.25451" BBK_DIFF_A="0.30633"/>
      <bbk:Obs TIME_PERIOD="2016-01-12" OBS_VALUE="5.94818" BBK_DIFF_A="-0.37777"/>
      <bbk:Obs TIME_PERIOD="2016-01-11" OBS_VALUE="6.32595" BBK_DIFF_A="-0.03475"/>
      <bbk:Obs TIME_PERIOD="2016-01-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-01-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-01-08" OBS_VALUE="6.3607" BBK_DIFF_A="0.00966"/>
      <bbk:Obs TIME_PERIOD="2016-01-07" OBS_VALUE="6.35104" BBK_DIFF_A="-0.03576"/>
      <bbk:Obs TIME_PERIOD="2016-01-06" OBS_VALUE="6.3868" BBK_DIFF_A="-0.14688"/>
      <bbk:Obs TIME_PERIOD="2016-01-05" OBS_VALUE="6.53368" BBK_DIFF_A="0.13871"/>
      <bbk:Obs TIME_PERIOD="2016-01-04" OBS_VALUE="6.39497" BBK_DIFF_A="-0.08103"/>
      <bbk:Obs TIME_PERIOD="2016-01-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-01-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2016-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-12-30" OBS_VALUE="6.476" BBK_DIFF_A="-0.28307"/>
      <bbk:Obs TIME_PERIOD="2015-12-29" OBS_VALUE="6.75907" BBK_DIFF_A="0.40329"/>
      <bbk:Obs TIME_PERIOD="2015-12-28" OBS_VALUE="6.35578" BBK_DIFF_A="0.06018"/>
      <bbk:Obs TIME_PERIOD="2015-12-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-12-23" OBS_VALUE="6.2956" BBK_DIFF_A="-0.07062"/>
      <bbk:Obs TIME_PERIOD="2015-12-22" OBS_VALUE="6.36622" BBK_DIFF_A="0.34151"/>
      <bbk:Obs TIME_PERIOD="2015-12-21" OBS_VALUE="6.02471" BBK_DIFF_A="-0.04702"/>
      <bbk:Obs TIME_PERIOD="2015-12-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-12-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-12-18" OBS_VALUE="6.07173" BBK_DIFF_A="-0.00214"/>
      <bbk:Obs TIME_PERIOD="2015-12-17" OBS_VALUE="6.07387" BBK_DIFF_A="0.08068"/>
      <bbk:Obs TIME_PERIOD="2015-12-16" OBS_VALUE="5.99319" BBK_DIFF_A="-0.13037"/>
      <bbk:Obs TIME_PERIOD="2015-12-15" OBS_VALUE="6.12356" BBK_DIFF_A="-0.00738"/>
      <bbk:Obs TIME_PERIOD="2015-12-14" OBS_VALUE="6.13094" BBK_DIFF_A="-0.13239"/>
      <bbk:Obs TIME_PERIOD="2015-12-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-12-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-12-11" OBS_VALUE="6.26333" BBK_DIFF_A="0.01421"/>
      <bbk:Obs TIME_PERIOD="2015-12-10" OBS_VALUE="6.24912" BBK_DIFF_A="-0.01709"/>
      <bbk:Obs TIME_PERIOD="2015-12-09" OBS_VALUE="6.26621" BBK_DIFF_A="-0.12135"/>
      <bbk:Obs TIME_PERIOD="2015-12-08" OBS_VALUE="6.38756" BBK_DIFF_A="0.06417"/>
      <bbk:Obs TIME_PERIOD="2015-12-07" OBS_VALUE="6.32339" BBK_DIFF_A="-0.04993"/>
      <bbk:Obs TIME_PERIOD="2015-12-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-12-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-12-04" OBS_VALUE="6.37332" BBK_DIFF_A="0.23354"/>
      <bbk:Obs TIME_PERIOD="2015-12-03" OBS_VALUE="6.13978" BBK_DIFF_A="-0.08418"/>
      <bbk:Obs TIME_PERIOD="2015-12-02" OBS_VALUE="6.22396" BBK_DIFF_A="0.07165"/>
      <bbk:Obs TIME_PERIOD="2015-12-01" OBS_VALUE="6.15231" BBK_DIFF_A="-0.02558"/>
      <bbk:Obs TIME_PERIOD="2015-11-30" OBS_VALUE="6.17789" BBK_DIFF_A="0.30258"/>
      <bbk:Obs TIME_PERIOD="2015-11-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-11-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-11-27" OBS_VALUE="5.87531" BBK_DIFF_A="0.18641"/>
      <bbk:Obs TIME_PERIOD="2015-11-26" OBS_VALUE="5.6889" BBK_DIFF_A="0.22194"/>
      <bbk:Obs TIME_PERIOD="2015-11-25" OBS_VALUE="5.46696" BBK_DIFF_A="0.10447"/>
      <bbk:Obs TIME_PERIOD="2015-11-24" OBS_VALUE="5.36249" BBK_DIFF_A="0.4171"/>
      <bbk:Obs TIME_PERIOD="2015-11-23" OBS_VALUE="4.94539" BBK_DIFF_A="-0.87961"/>
      <bbk:Obs TIME_PERIOD="2015-11-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-11-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-11-20" OBS_VALUE="5.825" BBK_DIFF_A="-0.13676"/>
      <bbk:Obs TIME_PERIOD="2015-11-19" OBS_VALUE="5.96176" BBK_DIFF_A="-0.07202"/>
      <bbk:Obs TIME_PERIOD="2015-11-18" OBS_VALUE="6.03378" BBK_DIFF_A="0.14473"/>
      <bbk:Obs TIME_PERIOD="2015-11-17" OBS_VALUE="5.88905" BBK_DIFF_A="0.36312"/>
      <bbk:Obs TIME_PERIOD="2015-11-16" OBS_VALUE="5.52593" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-11-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-11-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-11-13" OBS_VALUE="5.52593" BBK_DIFF_A="0.61986"/>
      <bbk:Obs TIME_PERIOD="2015-11-12" OBS_VALUE="4.90607" BBK_DIFF_A="-1.26735"/>
      <bbk:Obs TIME_PERIOD="2015-11-11" OBS_VALUE="6.17342" BBK_DIFF_A="1.31797"/>
      <bbk:Obs TIME_PERIOD="2015-11-10" OBS_VALUE="4.85545" BBK_DIFF_A="-1.23179"/>
      <bbk:Obs TIME_PERIOD="2015-11-09" OBS_VALUE="6.08724" BBK_DIFF_A="-0.10691"/>
      <bbk:Obs TIME_PERIOD="2015-11-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-11-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-11-06" OBS_VALUE="6.19415" BBK_DIFF_A="0.03313"/>
      <bbk:Obs TIME_PERIOD="2015-11-05" OBS_VALUE="6.16102" BBK_DIFF_A="-0.23561"/>
      <bbk:Obs TIME_PERIOD="2015-11-04" OBS_VALUE="6.39663" BBK_DIFF_A="0.10981"/>
      <bbk:Obs TIME_PERIOD="2015-11-03" OBS_VALUE="6.28682" BBK_DIFF_A="0.01062"/>
      <bbk:Obs TIME_PERIOD="2015-11-02" OBS_VALUE="6.2762" BBK_DIFF_A="1.17329"/>
      <bbk:Obs TIME_PERIOD="2015-11-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-10-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-10-30" OBS_VALUE="5.10291" BBK_DIFF_A="-1.23699"/>
      <bbk:Obs TIME_PERIOD="2015-10-29" OBS_VALUE="6.3399" BBK_DIFF_A="0.02705"/>
      <bbk:Obs TIME_PERIOD="2015-10-28" OBS_VALUE="6.31285" BBK_DIFF_A="-0.1974"/>
      <bbk:Obs TIME_PERIOD="2015-10-27" OBS_VALUE="6.51025" BBK_DIFF_A="0.17746"/>
      <bbk:Obs TIME_PERIOD="2015-10-26" OBS_VALUE="6.33279" BBK_DIFF_A="-0.0858"/>
      <bbk:Obs TIME_PERIOD="2015-10-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-10-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-10-23" OBS_VALUE="6.41859" BBK_DIFF_A="-0.09964"/>
      <bbk:Obs TIME_PERIOD="2015-10-22" OBS_VALUE="6.51823" BBK_DIFF_A="-0.04239"/>
      <bbk:Obs TIME_PERIOD="2015-10-21" OBS_VALUE="6.56062" BBK_DIFF_A="0.01491"/>
      <bbk:Obs TIME_PERIOD="2015-10-20" OBS_VALUE="6.54571" BBK_DIFF_A="0.03071"/>
      <bbk:Obs TIME_PERIOD="2015-10-19" OBS_VALUE="6.515" BBK_DIFF_A="-0.12891"/>
      <bbk:Obs TIME_PERIOD="2015-10-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-10-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-10-16" OBS_VALUE="6.64391" BBK_DIFF_A="0.05389"/>
      <bbk:Obs TIME_PERIOD="2015-10-15" OBS_VALUE="6.59002" BBK_DIFF_A="0.02121"/>
      <bbk:Obs TIME_PERIOD="2015-10-14" OBS_VALUE="6.56881" BBK_DIFF_A="0.0382"/>
      <bbk:Obs TIME_PERIOD="2015-10-13" OBS_VALUE="6.53061" BBK_DIFF_A="0.03565"/>
      <bbk:Obs TIME_PERIOD="2015-10-12" OBS_VALUE="6.49496" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-10-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-10-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-10-09" OBS_VALUE="6.49496" BBK_DIFF_A="-0.00293"/>
      <bbk:Obs TIME_PERIOD="2015-10-08" OBS_VALUE="6.49789" BBK_DIFF_A="0.0294"/>
      <bbk:Obs TIME_PERIOD="2015-10-07" OBS_VALUE="6.46849" BBK_DIFF_A="-0.01567"/>
      <bbk:Obs TIME_PERIOD="2015-10-06" OBS_VALUE="6.48416" BBK_DIFF_A="-0.02667"/>
      <bbk:Obs TIME_PERIOD="2015-10-05" OBS_VALUE="6.51083" BBK_DIFF_A="0.06255"/>
      <bbk:Obs TIME_PERIOD="2015-10-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-10-02" OBS_VALUE="6.44828" BBK_DIFF_A="-0.19673"/>
      <bbk:Obs TIME_PERIOD="2015-10-01" OBS_VALUE="6.64501" BBK_DIFF_A="0.18829"/>
      <bbk:Obs TIME_PERIOD="2015-09-30" OBS_VALUE="6.45672" BBK_DIFF_A="0.02062"/>
      <bbk:Obs TIME_PERIOD="2015-09-29" OBS_VALUE="6.4361" BBK_DIFF_A="0.04738"/>
      <bbk:Obs TIME_PERIOD="2015-09-28" OBS_VALUE="6.38872" BBK_DIFF_A="-0.02238"/>
      <bbk:Obs TIME_PERIOD="2015-09-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-09-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-09-25" OBS_VALUE="6.4111" BBK_DIFF_A="0.01937"/>
      <bbk:Obs TIME_PERIOD="2015-09-24" OBS_VALUE="6.39173" BBK_DIFF_A="0.01237"/>
      <bbk:Obs TIME_PERIOD="2015-09-23" OBS_VALUE="6.37936" BBK_DIFF_A="-0.00459"/>
      <bbk:Obs TIME_PERIOD="2015-09-22" OBS_VALUE="6.38395" BBK_DIFF_A="0.05168"/>
      <bbk:Obs TIME_PERIOD="2015-09-21" OBS_VALUE="6.33227" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-09-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-09-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-09-18" OBS_VALUE="6.33227" BBK_DIFF_A="0.04475"/>
      <bbk:Obs TIME_PERIOD="2015-09-17" OBS_VALUE="6.28752" BBK_DIFF_A="0.07154"/>
      <bbk:Obs TIME_PERIOD="2015-09-16" OBS_VALUE="6.21598" BBK_DIFF_A="-0.14537"/>
      <bbk:Obs TIME_PERIOD="2015-09-15" OBS_VALUE="6.36135" BBK_DIFF_A="-0.07995"/>
      <bbk:Obs TIME_PERIOD="2015-09-14" OBS_VALUE="6.4413" BBK_DIFF_A="0.06571"/>
      <bbk:Obs TIME_PERIOD="2015-09-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-09-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-09-11" OBS_VALUE="6.37559" BBK_DIFF_A="0.01879"/>
      <bbk:Obs TIME_PERIOD="2015-09-10" OBS_VALUE="6.3568" BBK_DIFF_A="-0.01102"/>
      <bbk:Obs TIME_PERIOD="2015-09-09" OBS_VALUE="6.36782" BBK_DIFF_A="-0.07722"/>
      <bbk:Obs TIME_PERIOD="2015-09-08" OBS_VALUE="6.44504" BBK_DIFF_A="0.45861"/>
      <bbk:Obs TIME_PERIOD="2015-09-07" OBS_VALUE="5.98643" BBK_DIFF_A="0.05184"/>
      <bbk:Obs TIME_PERIOD="2015-09-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-09-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-09-04" OBS_VALUE="5.93459" BBK_DIFF_A="0.27361"/>
      <bbk:Obs TIME_PERIOD="2015-09-03" OBS_VALUE="5.66098" BBK_DIFF_A="-0.13972"/>
      <bbk:Obs TIME_PERIOD="2015-09-02" OBS_VALUE="5.8007" BBK_DIFF_A="-0.01173"/>
      <bbk:Obs TIME_PERIOD="2015-09-01" OBS_VALUE="5.81243" BBK_DIFF_A="0.34526"/>
      <bbk:Obs TIME_PERIOD="2015-08-31" OBS_VALUE="5.46717" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-08-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-08-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-08-28" OBS_VALUE="5.46717" BBK_DIFF_A="0.14699"/>
      <bbk:Obs TIME_PERIOD="2015-08-27" OBS_VALUE="5.32018" BBK_DIFF_A="-0.06373"/>
      <bbk:Obs TIME_PERIOD="2015-08-26" OBS_VALUE="5.38391" BBK_DIFF_A="1.02281"/>
      <bbk:Obs TIME_PERIOD="2015-08-25" OBS_VALUE="4.3611" BBK_DIFF_A="-1.8393"/>
      <bbk:Obs TIME_PERIOD="2015-08-24" OBS_VALUE="6.2004" BBK_DIFF_A="0.01829"/>
      <bbk:Obs TIME_PERIOD="2015-08-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-08-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-08-21" OBS_VALUE="6.18211" BBK_DIFF_A="0.07422"/>
      <bbk:Obs TIME_PERIOD="2015-08-20" OBS_VALUE="6.10789" BBK_DIFF_A="0.2454"/>
      <bbk:Obs TIME_PERIOD="2015-08-19" OBS_VALUE="5.86249" BBK_DIFF_A="0.61468"/>
      <bbk:Obs TIME_PERIOD="2015-08-18" OBS_VALUE="5.24781" BBK_DIFF_A="-1.79314"/>
      <bbk:Obs TIME_PERIOD="2015-08-17" OBS_VALUE="7.04095" BBK_DIFF_A="-0.21673"/>
      <bbk:Obs TIME_PERIOD="2015-08-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-08-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-08-14" OBS_VALUE="7.25768" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-08-13" OBS_VALUE="7.25768" BBK_DIFF_A="-0.30483"/>
      <bbk:Obs TIME_PERIOD="2015-08-12" OBS_VALUE="7.56251" BBK_DIFF_A="1.2689"/>
      <bbk:Obs TIME_PERIOD="2015-08-11" OBS_VALUE="6.29361" BBK_DIFF_A="-0.12698"/>
      <bbk:Obs TIME_PERIOD="2015-08-10" OBS_VALUE="6.42059" BBK_DIFF_A="-0.29805"/>
      <bbk:Obs TIME_PERIOD="2015-08-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-08-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-08-07" OBS_VALUE="6.71864" BBK_DIFF_A="0.39209"/>
      <bbk:Obs TIME_PERIOD="2015-08-06" OBS_VALUE="6.32655" BBK_DIFF_A="-0.17267"/>
      <bbk:Obs TIME_PERIOD="2015-08-05" OBS_VALUE="6.49922" BBK_DIFF_A="-0.2321"/>
      <bbk:Obs TIME_PERIOD="2015-08-04" OBS_VALUE="6.73132" BBK_DIFF_A="0.08745"/>
      <bbk:Obs TIME_PERIOD="2015-08-03" OBS_VALUE="6.64387" BBK_DIFF_A="-1.06003"/>
      <bbk:Obs TIME_PERIOD="2015-08-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-08-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-07-31" OBS_VALUE="7.7039" BBK_DIFF_A="1.62866"/>
      <bbk:Obs TIME_PERIOD="2015-07-30" OBS_VALUE="6.07524" BBK_DIFF_A="-0.74065"/>
      <bbk:Obs TIME_PERIOD="2015-07-29" OBS_VALUE="6.81589" BBK_DIFF_A="-0.06535"/>
      <bbk:Obs TIME_PERIOD="2015-07-28" OBS_VALUE="6.88124" BBK_DIFF_A="0.56362"/>
      <bbk:Obs TIME_PERIOD="2015-07-27" OBS_VALUE="6.31762" BBK_DIFF_A="-0.01353"/>
      <bbk:Obs TIME_PERIOD="2015-07-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-07-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-07-24" OBS_VALUE="6.33115" BBK_DIFF_A="0.1618"/>
      <bbk:Obs TIME_PERIOD="2015-07-23" OBS_VALUE="6.16935" BBK_DIFF_A="-1.26345"/>
      <bbk:Obs TIME_PERIOD="2015-07-22" OBS_VALUE="7.4328" BBK_DIFF_A="1.28665"/>
      <bbk:Obs TIME_PERIOD="2015-07-21" OBS_VALUE="6.14615" BBK_DIFF_A="-0.06358"/>
      <bbk:Obs TIME_PERIOD="2015-07-20" OBS_VALUE="6.20973" BBK_DIFF_A="-0.10285"/>
      <bbk:Obs TIME_PERIOD="2015-07-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-07-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-07-17" OBS_VALUE="6.31258" BBK_DIFF_A="-0.14638"/>
      <bbk:Obs TIME_PERIOD="2015-07-16" OBS_VALUE="6.45896" BBK_DIFF_A="0.32957"/>
      <bbk:Obs TIME_PERIOD="2015-07-15" OBS_VALUE="6.12939" BBK_DIFF_A="0.00662"/>
      <bbk:Obs TIME_PERIOD="2015-07-14" OBS_VALUE="6.12277" BBK_DIFF_A="0.07983"/>
      <bbk:Obs TIME_PERIOD="2015-07-13" OBS_VALUE="6.04294" BBK_DIFF_A="0.27755"/>
      <bbk:Obs TIME_PERIOD="2015-07-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-07-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-07-10" OBS_VALUE="5.76539" BBK_DIFF_A="-0.15214"/>
      <bbk:Obs TIME_PERIOD="2015-07-09" OBS_VALUE="5.91753" BBK_DIFF_A="-0.35806"/>
      <bbk:Obs TIME_PERIOD="2015-07-08" OBS_VALUE="6.27559" BBK_DIFF_A="-0.36622"/>
      <bbk:Obs TIME_PERIOD="2015-07-07" OBS_VALUE="6.64181" BBK_DIFF_A="0.0201"/>
      <bbk:Obs TIME_PERIOD="2015-07-06" OBS_VALUE="6.62171" BBK_DIFF_A="-0.18642"/>
      <bbk:Obs TIME_PERIOD="2015-07-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-07-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-07-03" OBS_VALUE="6.80813" BBK_DIFF_A="-0.12966"/>
      <bbk:Obs TIME_PERIOD="2015-07-02" OBS_VALUE="6.93779" BBK_DIFF_A="-1.00769"/>
      <bbk:Obs TIME_PERIOD="2015-07-01" OBS_VALUE="7.94548" BBK_DIFF_A="1.28948"/>
      <bbk:Obs TIME_PERIOD="2015-06-30" OBS_VALUE="6.656" BBK_DIFF_A="0.24635"/>
      <bbk:Obs TIME_PERIOD="2015-06-29" OBS_VALUE="6.40965" BBK_DIFF_A="-0.02555"/>
      <bbk:Obs TIME_PERIOD="2015-06-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-06-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-06-26" OBS_VALUE="6.4352" BBK_DIFF_A="0.17738"/>
      <bbk:Obs TIME_PERIOD="2015-06-25" OBS_VALUE="6.25782" BBK_DIFF_A="-0.00831"/>
      <bbk:Obs TIME_PERIOD="2015-06-24" OBS_VALUE="6.26613" BBK_DIFF_A="0.21735"/>
      <bbk:Obs TIME_PERIOD="2015-06-23" OBS_VALUE="6.04878" BBK_DIFF_A="-0.57733"/>
      <bbk:Obs TIME_PERIOD="2015-06-22" OBS_VALUE="6.62611" BBK_DIFF_A="1.46892"/>
      <bbk:Obs TIME_PERIOD="2015-06-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-06-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-06-19" OBS_VALUE="5.15719" BBK_DIFF_A="-0.22862"/>
      <bbk:Obs TIME_PERIOD="2015-06-18" OBS_VALUE="5.38581" BBK_DIFF_A="0.25003"/>
      <bbk:Obs TIME_PERIOD="2015-06-17" OBS_VALUE="5.13578" BBK_DIFF_A="-0.03868"/>
      <bbk:Obs TIME_PERIOD="2015-06-16" OBS_VALUE="5.17446" BBK_DIFF_A="0.06552"/>
      <bbk:Obs TIME_PERIOD="2015-06-15" OBS_VALUE="5.10894" BBK_DIFF_A="0.3327"/>
      <bbk:Obs TIME_PERIOD="2015-06-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-06-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-06-12" OBS_VALUE="4.77624" BBK_DIFF_A="0.13689"/>
      <bbk:Obs TIME_PERIOD="2015-06-11" OBS_VALUE="4.63935" BBK_DIFF_A="0.30065"/>
      <bbk:Obs TIME_PERIOD="2015-06-10" OBS_VALUE="4.3387" BBK_DIFF_A="0.11795"/>
      <bbk:Obs TIME_PERIOD="2015-06-09" OBS_VALUE="4.22075" BBK_DIFF_A="-0.87964"/>
      <bbk:Obs TIME_PERIOD="2015-06-08" OBS_VALUE="5.10039" BBK_DIFF_A="0.32254"/>
      <bbk:Obs TIME_PERIOD="2015-06-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-06-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-06-05" OBS_VALUE="4.77785" BBK_DIFF_A="0.91474"/>
      <bbk:Obs TIME_PERIOD="2015-06-04" OBS_VALUE="3.86311" BBK_DIFF_A="-1.11642"/>
      <bbk:Obs TIME_PERIOD="2015-06-03" OBS_VALUE="4.97953" BBK_DIFF_A="-0.32141"/>
      <bbk:Obs TIME_PERIOD="2015-06-02" OBS_VALUE="5.30094" BBK_DIFF_A="-0.75665"/>
      <bbk:Obs TIME_PERIOD="2015-06-01" OBS_VALUE="6.05759" BBK_DIFF_A="0.27089"/>
      <bbk:Obs TIME_PERIOD="2015-05-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-05-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-05-29" OBS_VALUE="5.7867" BBK_DIFF_A="0.32394"/>
      <bbk:Obs TIME_PERIOD="2015-05-28" OBS_VALUE="5.46276" BBK_DIFF_A="0.76782"/>
      <bbk:Obs TIME_PERIOD="2015-05-27" OBS_VALUE="4.69494" BBK_DIFF_A="0.11139"/>
      <bbk:Obs TIME_PERIOD="2015-05-26" OBS_VALUE="4.58355" BBK_DIFF_A="-0.04319"/>
      <bbk:Obs TIME_PERIOD="2015-05-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-05-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-05-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-05-22" OBS_VALUE="4.62674" BBK_DIFF_A="-0.60901"/>
      <bbk:Obs TIME_PERIOD="2015-05-21" OBS_VALUE="5.23575" BBK_DIFF_A="0.61818"/>
      <bbk:Obs TIME_PERIOD="2015-05-20" OBS_VALUE="4.61757" BBK_DIFF_A="-0.31108"/>
      <bbk:Obs TIME_PERIOD="2015-05-19" OBS_VALUE="4.92865" BBK_DIFF_A="0.32985"/>
      <bbk:Obs TIME_PERIOD="2015-05-18" OBS_VALUE="4.5988" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-05-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-05-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-05-15" OBS_VALUE="4.5988" BBK_DIFF_A="0.05608"/>
      <bbk:Obs TIME_PERIOD="2015-05-14" OBS_VALUE="4.54272" BBK_DIFF_A="-0.52681"/>
      <bbk:Obs TIME_PERIOD="2015-05-13" OBS_VALUE="5.06953" BBK_DIFF_A="0.54405"/>
      <bbk:Obs TIME_PERIOD="2015-05-12" OBS_VALUE="4.52548" BBK_DIFF_A="-0.00585"/>
      <bbk:Obs TIME_PERIOD="2015-05-11" OBS_VALUE="4.53133" BBK_DIFF_A="0.17275"/>
      <bbk:Obs TIME_PERIOD="2015-05-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-05-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-05-08" OBS_VALUE="4.35858" BBK_DIFF_A="-0.43887"/>
      <bbk:Obs TIME_PERIOD="2015-05-07" OBS_VALUE="4.79745" BBK_DIFF_A="-5.57367"/>
      <bbk:Obs TIME_PERIOD="2015-05-06" OBS_VALUE="10.37112" BBK_DIFF_A="5.18556"/>
      <bbk:Obs TIME_PERIOD="2015-05-05" OBS_VALUE="5.18556" BBK_DIFF_A="4.52142"/>
      <bbk:Obs TIME_PERIOD="2015-05-04" OBS_VALUE="0.66414" BBK_DIFF_A="-9.96214"/>
      <bbk:Obs TIME_PERIOD="2015-05-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-05-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-04-30" OBS_VALUE="10.62628" BBK_DIFF_A="7.06449"/>
      <bbk:Obs TIME_PERIOD="2015-04-29" OBS_VALUE="3.56179" BBK_DIFF_A="-0.00958"/>
      <bbk:Obs TIME_PERIOD="2015-04-28" OBS_VALUE="3.57137" BBK_DIFF_A="-2.12368"/>
      <bbk:Obs TIME_PERIOD="2015-04-27" OBS_VALUE="5.69505" BBK_DIFF_A="0.16199"/>
      <bbk:Obs TIME_PERIOD="2015-04-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-04-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-04-24" OBS_VALUE="5.53306" BBK_DIFF_A="-0.57371"/>
      <bbk:Obs TIME_PERIOD="2015-04-23" OBS_VALUE="6.10677" BBK_DIFF_A="0.78229"/>
      <bbk:Obs TIME_PERIOD="2015-04-22" OBS_VALUE="5.32448" BBK_DIFF_A="1.35377"/>
      <bbk:Obs TIME_PERIOD="2015-04-21" OBS_VALUE="3.97071" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-04-20" OBS_VALUE="3.97071" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-04-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-04-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-04-17" OBS_VALUE="3.97071" BBK_DIFF_A="0.78139"/>
      <bbk:Obs TIME_PERIOD="2015-04-16" OBS_VALUE="3.18932" BBK_DIFF_A="2.96322"/>
      <bbk:Obs TIME_PERIOD="2015-04-15" OBS_VALUE="0.2261" BBK_DIFF_A="0.01701"/>
      <bbk:Obs TIME_PERIOD="2015-04-14" OBS_VALUE="0.20909" BBK_DIFF_A="-0.01059"/>
      <bbk:Obs TIME_PERIOD="2015-04-13" OBS_VALUE="0.21968" BBK_DIFF_A="0.01094"/>
      <bbk:Obs TIME_PERIOD="2015-04-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-04-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-04-10" OBS_VALUE="0.20874" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-04-09" OBS_VALUE="0.20874" BBK_DIFF_A="-1.88137"/>
      <bbk:Obs TIME_PERIOD="2015-04-08" OBS_VALUE="2.09011" BBK_DIFF_A="0.04727"/>
      <bbk:Obs TIME_PERIOD="2015-04-07" OBS_VALUE="2.04284" BBK_DIFF_A="0.02651"/>
      <bbk:Obs TIME_PERIOD="2015-04-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-04-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-04-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-04-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-04-02" OBS_VALUE="2.01633" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-04-01" OBS_VALUE="2.01633" BBK_DIFF_A="0.11934"/>
      <bbk:Obs TIME_PERIOD="2015-03-31" OBS_VALUE="1.89699" BBK_DIFF_A="-0.04766"/>
      <bbk:Obs TIME_PERIOD="2015-03-30" OBS_VALUE="1.94465" BBK_DIFF_A="0.09002"/>
      <bbk:Obs TIME_PERIOD="2015-03-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-03-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-03-27" OBS_VALUE="1.85463" BBK_DIFF_A="0.11587"/>
      <bbk:Obs TIME_PERIOD="2015-03-26" OBS_VALUE="1.73876" BBK_DIFF_A="-0.06582"/>
      <bbk:Obs TIME_PERIOD="2015-03-25" OBS_VALUE="1.80458" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-03-24" OBS_VALUE="1.80458" BBK_DIFF_A="-0.02012"/>
      <bbk:Obs TIME_PERIOD="2015-03-23" OBS_VALUE="1.8247" BBK_DIFF_A="0.11047"/>
      <bbk:Obs TIME_PERIOD="2015-03-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-03-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-03-20" OBS_VALUE="1.71423" BBK_DIFF_A="-0.09469"/>
      <bbk:Obs TIME_PERIOD="2015-03-19" OBS_VALUE="1.80892" BBK_DIFF_A="0.22028"/>
      <bbk:Obs TIME_PERIOD="2015-03-18" OBS_VALUE="1.58864" BBK_DIFF_A="0.14103"/>
      <bbk:Obs TIME_PERIOD="2015-03-17" OBS_VALUE="1.44761" BBK_DIFF_A="1.26493"/>
      <bbk:Obs TIME_PERIOD="2015-03-16" OBS_VALUE="0.18268" BBK_DIFF_A="-0.03105"/>
      <bbk:Obs TIME_PERIOD="2015-03-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-03-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-03-13" OBS_VALUE="0.21373" BBK_DIFF_A="-5.42952"/>
      <bbk:Obs TIME_PERIOD="2015-03-12" OBS_VALUE="5.64325" BBK_DIFF_A="0.69134"/>
      <bbk:Obs TIME_PERIOD="2015-03-11" OBS_VALUE="4.95191" BBK_DIFF_A="-1.59188"/>
      <bbk:Obs TIME_PERIOD="2015-03-10" OBS_VALUE="6.54379" BBK_DIFF_A="-0.37975"/>
      <bbk:Obs TIME_PERIOD="2015-03-09" OBS_VALUE="6.92354" BBK_DIFF_A="0.07441"/>
      <bbk:Obs TIME_PERIOD="2015-03-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-03-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-03-06" OBS_VALUE="6.84913" BBK_DIFF_A="0.02887"/>
      <bbk:Obs TIME_PERIOD="2015-03-05" OBS_VALUE="6.82026" BBK_DIFF_A="-0.06436"/>
      <bbk:Obs TIME_PERIOD="2015-03-04" OBS_VALUE="6.88462" BBK_DIFF_A="-0.17238"/>
      <bbk:Obs TIME_PERIOD="2015-03-03" OBS_VALUE="7.057" BBK_DIFF_A="0.03741"/>
      <bbk:Obs TIME_PERIOD="2015-03-02" OBS_VALUE="7.01959" BBK_DIFF_A="0.15817"/>
      <bbk:Obs TIME_PERIOD="2015-03-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-02-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-02-27" OBS_VALUE="6.86142" BBK_DIFF_A="-0.09795"/>
      <bbk:Obs TIME_PERIOD="2015-02-26" OBS_VALUE="6.95937" BBK_DIFF_A="-1.87424"/>
      <bbk:Obs TIME_PERIOD="2015-02-25" OBS_VALUE="8.83361" BBK_DIFF_A="6.35552"/>
      <bbk:Obs TIME_PERIOD="2015-02-24" OBS_VALUE="2.47809" BBK_DIFF_A="7.0E-5"/>
      <bbk:Obs TIME_PERIOD="2015-02-23" OBS_VALUE="2.47802" BBK_DIFF_A="0.05658"/>
      <bbk:Obs TIME_PERIOD="2015-02-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-02-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-02-20" OBS_VALUE="2.42144" BBK_DIFF_A="-3.3E-4"/>
      <bbk:Obs TIME_PERIOD="2015-02-19" OBS_VALUE="2.42177" BBK_DIFF_A="0.03374"/>
      <bbk:Obs TIME_PERIOD="2015-02-18" OBS_VALUE="2.38803" BBK_DIFF_A="0.0605"/>
      <bbk:Obs TIME_PERIOD="2015-02-17" OBS_VALUE="2.32753" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-02-16" OBS_VALUE="2.32753" BBK_DIFF_A="-0.0132"/>
      <bbk:Obs TIME_PERIOD="2015-02-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-02-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-02-13" OBS_VALUE="2.34073" BBK_DIFF_A="0.00421"/>
      <bbk:Obs TIME_PERIOD="2015-02-12" OBS_VALUE="2.33652" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-02-11" OBS_VALUE="2.33652" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-02-10" OBS_VALUE="2.33652" BBK_DIFF_A="-0.0358"/>
      <bbk:Obs TIME_PERIOD="2015-02-09" OBS_VALUE="2.37232" BBK_DIFF_A="-0.00122"/>
      <bbk:Obs TIME_PERIOD="2015-02-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-02-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-02-06" OBS_VALUE="2.37354" BBK_DIFF_A="-0.04972"/>
      <bbk:Obs TIME_PERIOD="2015-02-05" OBS_VALUE="2.42326" BBK_DIFF_A="-0.08222"/>
      <bbk:Obs TIME_PERIOD="2015-02-04" OBS_VALUE="2.50548" BBK_DIFF_A="0.61536"/>
      <bbk:Obs TIME_PERIOD="2015-02-03" OBS_VALUE="1.89012" BBK_DIFF_A="-0.11233"/>
      <bbk:Obs TIME_PERIOD="2015-02-02" OBS_VALUE="2.00245" BBK_DIFF_A="-0.0549"/>
      <bbk:Obs TIME_PERIOD="2015-02-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-01-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-01-30" OBS_VALUE="2.05735" BBK_DIFF_A="0.00265"/>
      <bbk:Obs TIME_PERIOD="2015-01-29" OBS_VALUE="2.0547" BBK_DIFF_A="-0.0736"/>
      <bbk:Obs TIME_PERIOD="2015-01-28" OBS_VALUE="2.1283" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2015-01-27" OBS_VALUE="2.1283" BBK_DIFF_A="0.08937"/>
      <bbk:Obs TIME_PERIOD="2015-01-26" OBS_VALUE="2.03893" BBK_DIFF_A="0.01605"/>
      <bbk:Obs TIME_PERIOD="2015-01-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-01-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-01-23" OBS_VALUE="2.02288" BBK_DIFF_A="0.14017"/>
      <bbk:Obs TIME_PERIOD="2015-01-22" OBS_VALUE="1.88271" BBK_DIFF_A="-0.00386"/>
      <bbk:Obs TIME_PERIOD="2015-01-21" OBS_VALUE="1.88657" BBK_DIFF_A="0.01504"/>
      <bbk:Obs TIME_PERIOD="2015-01-20" OBS_VALUE="1.87153" BBK_DIFF_A="0.00769"/>
      <bbk:Obs TIME_PERIOD="2015-01-19" OBS_VALUE="1.86384" BBK_DIFF_A="0.03314"/>
      <bbk:Obs TIME_PERIOD="2015-01-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-01-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-01-16" OBS_VALUE="1.8307" BBK_DIFF_A="0.13691"/>
      <bbk:Obs TIME_PERIOD="2015-01-15" OBS_VALUE="1.69379" BBK_DIFF_A="-0.13121"/>
      <bbk:Obs TIME_PERIOD="2015-01-14" OBS_VALUE="1.825" BBK_DIFF_A="0.1554"/>
      <bbk:Obs TIME_PERIOD="2015-01-13" OBS_VALUE="1.6696" BBK_DIFF_A="-0.00243"/>
      <bbk:Obs TIME_PERIOD="2015-01-12" OBS_VALUE="1.67203" BBK_DIFF_A="-0.14376"/>
      <bbk:Obs TIME_PERIOD="2015-01-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-01-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-01-09" OBS_VALUE="1.81579" BBK_DIFF_A="0.14503"/>
      <bbk:Obs TIME_PERIOD="2015-01-08" OBS_VALUE="1.67076" BBK_DIFF_A="-0.2808"/>
      <bbk:Obs TIME_PERIOD="2015-01-07" OBS_VALUE="1.95156" BBK_DIFF_A="0.0201"/>
      <bbk:Obs TIME_PERIOD="2015-01-06" OBS_VALUE="1.93146" BBK_DIFF_A="-0.02909"/>
      <bbk:Obs TIME_PERIOD="2015-01-05" OBS_VALUE="1.96055" BBK_DIFF_A="0.08522"/>
      <bbk:Obs TIME_PERIOD="2015-01-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-01-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2015-01-02" OBS_VALUE="1.87533" BBK_DIFF_A="-0.12436"/>
      <bbk:Obs TIME_PERIOD="2015-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-12-30" OBS_VALUE="1.99969" BBK_DIFF_A="-0.00404"/>
      <bbk:Obs TIME_PERIOD="2014-12-29" OBS_VALUE="2.00373" BBK_DIFF_A="-0.03043"/>
      <bbk:Obs TIME_PERIOD="2014-12-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-12-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-12-23" OBS_VALUE="2.03416" BBK_DIFF_A="-0.00551"/>
      <bbk:Obs TIME_PERIOD="2014-12-22" OBS_VALUE="2.03967" BBK_DIFF_A="0.01919"/>
      <bbk:Obs TIME_PERIOD="2014-12-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-12-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-12-19" OBS_VALUE="2.02048" BBK_DIFF_A="-0.01028"/>
      <bbk:Obs TIME_PERIOD="2014-12-18" OBS_VALUE="2.03076" BBK_DIFF_A="0.02058"/>
      <bbk:Obs TIME_PERIOD="2014-12-17" OBS_VALUE="2.01018" BBK_DIFF_A="0.04335"/>
      <bbk:Obs TIME_PERIOD="2014-12-16" OBS_VALUE="1.96683" BBK_DIFF_A="0.00642"/>
      <bbk:Obs TIME_PERIOD="2014-12-15" OBS_VALUE="1.96041" BBK_DIFF_A="0.01213"/>
      <bbk:Obs TIME_PERIOD="2014-12-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-12-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-12-12" OBS_VALUE="1.94828" BBK_DIFF_A="0.01067"/>
      <bbk:Obs TIME_PERIOD="2014-12-11" OBS_VALUE="1.93761" BBK_DIFF_A="0.01685"/>
      <bbk:Obs TIME_PERIOD="2014-12-10" OBS_VALUE="1.92076" BBK_DIFF_A="-0.04318"/>
      <bbk:Obs TIME_PERIOD="2014-12-09" OBS_VALUE="1.96394" BBK_DIFF_A="0.03959"/>
      <bbk:Obs TIME_PERIOD="2014-12-08" OBS_VALUE="1.92435" BBK_DIFF_A="0.02128"/>
      <bbk:Obs TIME_PERIOD="2014-12-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-12-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-12-05" OBS_VALUE="1.90307" BBK_DIFF_A="-0.02788"/>
      <bbk:Obs TIME_PERIOD="2014-12-04" OBS_VALUE="1.93095" BBK_DIFF_A="0.13394"/>
      <bbk:Obs TIME_PERIOD="2014-12-03" OBS_VALUE="1.79701" BBK_DIFF_A="-0.00669"/>
      <bbk:Obs TIME_PERIOD="2014-12-02" OBS_VALUE="1.8037" BBK_DIFF_A="0.00403"/>
      <bbk:Obs TIME_PERIOD="2014-12-01" OBS_VALUE="1.79967" BBK_DIFF_A="0.00861"/>
      <bbk:Obs TIME_PERIOD="2014-11-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-11-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-11-28" OBS_VALUE="1.79106" BBK_DIFF_A="0.01535"/>
      <bbk:Obs TIME_PERIOD="2014-11-27" OBS_VALUE="1.77571" BBK_DIFF_A="0.00779"/>
      <bbk:Obs TIME_PERIOD="2014-11-26" OBS_VALUE="1.76792" BBK_DIFF_A="-0.00168"/>
      <bbk:Obs TIME_PERIOD="2014-11-25" OBS_VALUE="1.7696" BBK_DIFF_A="0.04472"/>
      <bbk:Obs TIME_PERIOD="2014-11-24" OBS_VALUE="1.72488" BBK_DIFF_A="0.00584"/>
      <bbk:Obs TIME_PERIOD="2014-11-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-11-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-11-21" OBS_VALUE="1.71904" BBK_DIFF_A="-0.0077"/>
      <bbk:Obs TIME_PERIOD="2014-11-20" OBS_VALUE="1.72674" BBK_DIFF_A="0.02933"/>
      <bbk:Obs TIME_PERIOD="2014-11-19" OBS_VALUE="1.69741" BBK_DIFF_A="0.00239"/>
      <bbk:Obs TIME_PERIOD="2014-11-18" OBS_VALUE="1.69502" BBK_DIFF_A="0.00195"/>
      <bbk:Obs TIME_PERIOD="2014-11-17" OBS_VALUE="1.69307" BBK_DIFF_A="0.01756"/>
      <bbk:Obs TIME_PERIOD="2014-11-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-11-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-11-14" OBS_VALUE="1.67551" BBK_DIFF_A="-0.18049"/>
      <bbk:Obs TIME_PERIOD="2014-11-13" OBS_VALUE="1.856" BBK_DIFF_A="3.3E-4"/>
      <bbk:Obs TIME_PERIOD="2014-11-12" OBS_VALUE="1.85567" BBK_DIFF_A="0.00903"/>
      <bbk:Obs TIME_PERIOD="2014-11-11" OBS_VALUE="1.84664" BBK_DIFF_A="8.0E-5"/>
      <bbk:Obs TIME_PERIOD="2014-11-10" OBS_VALUE="1.84656" BBK_DIFF_A="-0.00752"/>
      <bbk:Obs TIME_PERIOD="2014-11-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-11-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-11-07" OBS_VALUE="1.85408" BBK_DIFF_A="-4.8E-4"/>
      <bbk:Obs TIME_PERIOD="2014-11-06" OBS_VALUE="1.85456" BBK_DIFF_A="0.00488"/>
      <bbk:Obs TIME_PERIOD="2014-11-05" OBS_VALUE="1.84968" BBK_DIFF_A="0.01708"/>
      <bbk:Obs TIME_PERIOD="2014-11-04" OBS_VALUE="1.8326" BBK_DIFF_A="0.0291"/>
      <bbk:Obs TIME_PERIOD="2014-11-03" OBS_VALUE="1.8035" BBK_DIFF_A="-0.02478"/>
      <bbk:Obs TIME_PERIOD="2014-11-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-11-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-10-31" OBS_VALUE="1.82828" BBK_DIFF_A="0.01872"/>
      <bbk:Obs TIME_PERIOD="2014-10-30" OBS_VALUE="1.80956" BBK_DIFF_A="-0.03268"/>
      <bbk:Obs TIME_PERIOD="2014-10-29" OBS_VALUE="1.84224" BBK_DIFF_A="0.01904"/>
      <bbk:Obs TIME_PERIOD="2014-10-28" OBS_VALUE="1.8232" BBK_DIFF_A="-0.0073"/>
      <bbk:Obs TIME_PERIOD="2014-10-27" OBS_VALUE="1.8305" BBK_DIFF_A="-0.00577"/>
      <bbk:Obs TIME_PERIOD="2014-10-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-10-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-10-24" OBS_VALUE="1.83627" BBK_DIFF_A="0.00447"/>
      <bbk:Obs TIME_PERIOD="2014-10-23" OBS_VALUE="1.8318" BBK_DIFF_A="-0.02277"/>
      <bbk:Obs TIME_PERIOD="2014-10-22" OBS_VALUE="1.85457" BBK_DIFF_A="0.00629"/>
      <bbk:Obs TIME_PERIOD="2014-10-21" OBS_VALUE="1.84828" BBK_DIFF_A="0.13132"/>
      <bbk:Obs TIME_PERIOD="2014-10-20" OBS_VALUE="1.71696" BBK_DIFF_A="0.05058"/>
      <bbk:Obs TIME_PERIOD="2014-10-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-10-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-10-17" OBS_VALUE="1.66638" BBK_DIFF_A="-0.02031"/>
      <bbk:Obs TIME_PERIOD="2014-10-16" OBS_VALUE="1.68669" BBK_DIFF_A="0.01869"/>
      <bbk:Obs TIME_PERIOD="2014-10-15" OBS_VALUE="1.668" BBK_DIFF_A="-4.76527"/>
      <bbk:Obs TIME_PERIOD="2014-10-14" OBS_VALUE="6.43327" BBK_DIFF_A="0.0713"/>
      <bbk:Obs TIME_PERIOD="2014-10-13" OBS_VALUE="6.36197" BBK_DIFF_A="0.0839"/>
      <bbk:Obs TIME_PERIOD="2014-10-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-10-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-10-10" OBS_VALUE="6.27807" BBK_DIFF_A="-0.01132"/>
      <bbk:Obs TIME_PERIOD="2014-10-09" OBS_VALUE="6.28939" BBK_DIFF_A="0.04915"/>
      <bbk:Obs TIME_PERIOD="2014-10-08" OBS_VALUE="6.24024" BBK_DIFF_A="0.04561"/>
      <bbk:Obs TIME_PERIOD="2014-10-07" OBS_VALUE="6.19463" BBK_DIFF_A="0.01149"/>
      <bbk:Obs TIME_PERIOD="2014-10-06" OBS_VALUE="6.18314" BBK_DIFF_A="0.02868"/>
      <bbk:Obs TIME_PERIOD="2014-10-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-10-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-10-02" OBS_VALUE="6.15446" BBK_DIFF_A="0.06047"/>
      <bbk:Obs TIME_PERIOD="2014-10-01" OBS_VALUE="6.09399" BBK_DIFF_A="-0.00667"/>
      <bbk:Obs TIME_PERIOD="2014-09-30" OBS_VALUE="6.10066" BBK_DIFF_A="0.02375"/>
      <bbk:Obs TIME_PERIOD="2014-09-29" OBS_VALUE="6.07691" BBK_DIFF_A="-0.10741"/>
      <bbk:Obs TIME_PERIOD="2014-09-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-09-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-09-26" OBS_VALUE="6.18432" BBK_DIFF_A="0.05061"/>
      <bbk:Obs TIME_PERIOD="2014-09-25" OBS_VALUE="6.13371" BBK_DIFF_A="0.03497"/>
      <bbk:Obs TIME_PERIOD="2014-09-24" OBS_VALUE="6.09874" BBK_DIFF_A="-0.01673"/>
      <bbk:Obs TIME_PERIOD="2014-09-23" OBS_VALUE="6.11547" BBK_DIFF_A="-0.03458"/>
      <bbk:Obs TIME_PERIOD="2014-09-22" OBS_VALUE="6.15005" BBK_DIFF_A="0.13477"/>
      <bbk:Obs TIME_PERIOD="2014-09-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-09-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-09-19" OBS_VALUE="6.01528" BBK_DIFF_A="0.03388"/>
      <bbk:Obs TIME_PERIOD="2014-09-18" OBS_VALUE="5.9814" BBK_DIFF_A="-0.05991"/>
      <bbk:Obs TIME_PERIOD="2014-09-17" OBS_VALUE="6.04131" BBK_DIFF_A="0.00211"/>
      <bbk:Obs TIME_PERIOD="2014-09-16" OBS_VALUE="6.0392" BBK_DIFF_A="0.05766"/>
      <bbk:Obs TIME_PERIOD="2014-09-15" OBS_VALUE="5.98154" BBK_DIFF_A="-0.03145"/>
      <bbk:Obs TIME_PERIOD="2014-09-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-09-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-09-12" OBS_VALUE="6.01299" BBK_DIFF_A="-0.06464"/>
      <bbk:Obs TIME_PERIOD="2014-09-11" OBS_VALUE="6.07763" BBK_DIFF_A="0.0241"/>
      <bbk:Obs TIME_PERIOD="2014-09-10" OBS_VALUE="6.05353" BBK_DIFF_A="-0.08619"/>
      <bbk:Obs TIME_PERIOD="2014-09-09" OBS_VALUE="6.13972" BBK_DIFF_A="-0.03564"/>
      <bbk:Obs TIME_PERIOD="2014-09-08" OBS_VALUE="6.17536" BBK_DIFF_A="0.04365"/>
      <bbk:Obs TIME_PERIOD="2014-09-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-09-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-09-05" OBS_VALUE="6.13171" BBK_DIFF_A="-0.04143"/>
      <bbk:Obs TIME_PERIOD="2014-09-04" OBS_VALUE="6.17314" BBK_DIFF_A="0.03215"/>
      <bbk:Obs TIME_PERIOD="2014-09-03" OBS_VALUE="6.14099" BBK_DIFF_A="-0.04192"/>
      <bbk:Obs TIME_PERIOD="2014-09-02" OBS_VALUE="6.18291" BBK_DIFF_A="-0.01232"/>
      <bbk:Obs TIME_PERIOD="2014-09-01" OBS_VALUE="6.19523" BBK_DIFF_A="-0.07331"/>
      <bbk:Obs TIME_PERIOD="2014-08-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-08-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-08-29" OBS_VALUE="6.26854" BBK_DIFF_A="0.06911"/>
      <bbk:Obs TIME_PERIOD="2014-08-28" OBS_VALUE="6.19943" BBK_DIFF_A="0.05827"/>
      <bbk:Obs TIME_PERIOD="2014-08-27" OBS_VALUE="6.14116" BBK_DIFF_A="0.04569"/>
      <bbk:Obs TIME_PERIOD="2014-08-26" OBS_VALUE="6.09547" BBK_DIFF_A="0.04787"/>
      <bbk:Obs TIME_PERIOD="2014-08-25" OBS_VALUE="6.0476" BBK_DIFF_A="0.02795"/>
      <bbk:Obs TIME_PERIOD="2014-08-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-08-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-08-22" OBS_VALUE="6.01965" BBK_DIFF_A="0.0532"/>
      <bbk:Obs TIME_PERIOD="2014-08-21" OBS_VALUE="5.96645" BBK_DIFF_A="-0.02515"/>
      <bbk:Obs TIME_PERIOD="2014-08-20" OBS_VALUE="5.9916" BBK_DIFF_A="0.0194"/>
      <bbk:Obs TIME_PERIOD="2014-08-19" OBS_VALUE="5.9722" BBK_DIFF_A="-0.03883"/>
      <bbk:Obs TIME_PERIOD="2014-08-18" OBS_VALUE="6.01103" BBK_DIFF_A="0.01914"/>
      <bbk:Obs TIME_PERIOD="2014-08-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-08-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-08-15" OBS_VALUE="5.99189" BBK_DIFF_A="0.01464"/>
      <bbk:Obs TIME_PERIOD="2014-08-14" OBS_VALUE="5.97725" BBK_DIFF_A="0.05364"/>
      <bbk:Obs TIME_PERIOD="2014-08-13" OBS_VALUE="5.92361" BBK_DIFF_A="-0.02049"/>
      <bbk:Obs TIME_PERIOD="2014-08-12" OBS_VALUE="5.9441" BBK_DIFF_A="0.00193"/>
      <bbk:Obs TIME_PERIOD="2014-08-11" OBS_VALUE="5.94217" BBK_DIFF_A="-0.02122"/>
      <bbk:Obs TIME_PERIOD="2014-08-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-08-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-08-08" OBS_VALUE="5.96339" BBK_DIFF_A="-1.53062"/>
      <bbk:Obs TIME_PERIOD="2014-08-07" OBS_VALUE="7.49401" BBK_DIFF_A="-0.01014"/>
      <bbk:Obs TIME_PERIOD="2014-08-06" OBS_VALUE="7.50415" BBK_DIFF_A="-0.01012"/>
      <bbk:Obs TIME_PERIOD="2014-08-05" OBS_VALUE="7.51427" BBK_DIFF_A="-0.08452"/>
      <bbk:Obs TIME_PERIOD="2014-08-04" OBS_VALUE="7.59879" BBK_DIFF_A="0.05022"/>
      <bbk:Obs TIME_PERIOD="2014-08-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-08-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-08-01" OBS_VALUE="7.54857" BBK_DIFF_A="0.00496"/>
      <bbk:Obs TIME_PERIOD="2014-07-31" OBS_VALUE="7.54361" BBK_DIFF_A="0.0075"/>
      <bbk:Obs TIME_PERIOD="2014-07-30" OBS_VALUE="7.53611" BBK_DIFF_A="0.00337"/>
      <bbk:Obs TIME_PERIOD="2014-07-29" OBS_VALUE="7.53274" BBK_DIFF_A="-0.03519"/>
      <bbk:Obs TIME_PERIOD="2014-07-28" OBS_VALUE="7.56793" BBK_DIFF_A="0.03213"/>
      <bbk:Obs TIME_PERIOD="2014-07-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-07-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-07-25" OBS_VALUE="7.5358" BBK_DIFF_A="-0.00152"/>
      <bbk:Obs TIME_PERIOD="2014-07-24" OBS_VALUE="7.53732" BBK_DIFF_A="-0.00394"/>
      <bbk:Obs TIME_PERIOD="2014-07-23" OBS_VALUE="7.54126" BBK_DIFF_A="-0.04563"/>
      <bbk:Obs TIME_PERIOD="2014-07-22" OBS_VALUE="7.58689" BBK_DIFF_A="0.07983"/>
      <bbk:Obs TIME_PERIOD="2014-07-21" OBS_VALUE="7.50706" BBK_DIFF_A="-0.04707"/>
      <bbk:Obs TIME_PERIOD="2014-07-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-07-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-07-18" OBS_VALUE="7.55413" BBK_DIFF_A="0.06113"/>
      <bbk:Obs TIME_PERIOD="2014-07-17" OBS_VALUE="7.493" BBK_DIFF_A="0.06101"/>
      <bbk:Obs TIME_PERIOD="2014-07-16" OBS_VALUE="7.43199" BBK_DIFF_A="-0.04835"/>
      <bbk:Obs TIME_PERIOD="2014-07-15" OBS_VALUE="7.48034" BBK_DIFF_A="0.01326"/>
      <bbk:Obs TIME_PERIOD="2014-07-14" OBS_VALUE="7.46708" BBK_DIFF_A="0.02016"/>
      <bbk:Obs TIME_PERIOD="2014-07-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-07-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-07-11" OBS_VALUE="7.44692" BBK_DIFF_A="-0.06135"/>
      <bbk:Obs TIME_PERIOD="2014-07-10" OBS_VALUE="7.50827" BBK_DIFF_A="0.04626"/>
      <bbk:Obs TIME_PERIOD="2014-07-09" OBS_VALUE="7.46201" BBK_DIFF_A="-0.02945"/>
      <bbk:Obs TIME_PERIOD="2014-07-08" OBS_VALUE="7.49146" BBK_DIFF_A="0.02254"/>
      <bbk:Obs TIME_PERIOD="2014-07-07" OBS_VALUE="7.46892" BBK_DIFF_A="0.04176"/>
      <bbk:Obs TIME_PERIOD="2014-07-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-07-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-07-04" OBS_VALUE="7.42716" BBK_DIFF_A="0.04853"/>
      <bbk:Obs TIME_PERIOD="2014-07-03" OBS_VALUE="7.37863" BBK_DIFF_A="-0.08017"/>
      <bbk:Obs TIME_PERIOD="2014-07-02" OBS_VALUE="7.4588" BBK_DIFF_A="0.0282"/>
      <bbk:Obs TIME_PERIOD="2014-07-01" OBS_VALUE="7.4306" BBK_DIFF_A="-0.06898"/>
      <bbk:Obs TIME_PERIOD="2014-06-30" OBS_VALUE="7.49958" BBK_DIFF_A="0.0086"/>
      <bbk:Obs TIME_PERIOD="2014-06-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-06-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-06-27" OBS_VALUE="7.49098" BBK_DIFF_A="0.01953"/>
      <bbk:Obs TIME_PERIOD="2014-06-26" OBS_VALUE="7.47145" BBK_DIFF_A="0.06156"/>
      <bbk:Obs TIME_PERIOD="2014-06-25" OBS_VALUE="7.40989" BBK_DIFF_A="-0.0175"/>
      <bbk:Obs TIME_PERIOD="2014-06-24" OBS_VALUE="7.42739" BBK_DIFF_A="0.03536"/>
      <bbk:Obs TIME_PERIOD="2014-06-23" OBS_VALUE="7.39203" BBK_DIFF_A="0.03115"/>
      <bbk:Obs TIME_PERIOD="2014-06-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-06-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-06-20" OBS_VALUE="7.36088" BBK_DIFF_A="0.01734"/>
      <bbk:Obs TIME_PERIOD="2014-06-19" OBS_VALUE="7.34354" BBK_DIFF_A="0.04685"/>
      <bbk:Obs TIME_PERIOD="2014-06-18" OBS_VALUE="7.29669" BBK_DIFF_A="-0.05336"/>
      <bbk:Obs TIME_PERIOD="2014-06-17" OBS_VALUE="7.35005" BBK_DIFF_A="0.02177"/>
      <bbk:Obs TIME_PERIOD="2014-06-16" OBS_VALUE="7.32828" BBK_DIFF_A="-0.03669"/>
      <bbk:Obs TIME_PERIOD="2014-06-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-06-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-06-13" OBS_VALUE="7.36497" BBK_DIFF_A="0.08925"/>
      <bbk:Obs TIME_PERIOD="2014-06-12" OBS_VALUE="7.27572" BBK_DIFF_A="0.03082"/>
      <bbk:Obs TIME_PERIOD="2014-06-11" OBS_VALUE="7.2449" BBK_DIFF_A="-0.08349"/>
      <bbk:Obs TIME_PERIOD="2014-06-10" OBS_VALUE="7.32839" BBK_DIFF_A="-0.02647"/>
      <bbk:Obs TIME_PERIOD="2014-06-09" OBS_VALUE="7.35486" BBK_DIFF_A="0.04721"/>
      <bbk:Obs TIME_PERIOD="2014-06-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-06-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-06-06" OBS_VALUE="7.30765" BBK_DIFF_A="0.17271"/>
      <bbk:Obs TIME_PERIOD="2014-06-05" OBS_VALUE="7.13494" BBK_DIFF_A="0.06037"/>
      <bbk:Obs TIME_PERIOD="2014-06-04" OBS_VALUE="7.07457" BBK_DIFF_A="-0.15856"/>
      <bbk:Obs TIME_PERIOD="2014-06-03" OBS_VALUE="7.23313" BBK_DIFF_A="-0.01974"/>
      <bbk:Obs TIME_PERIOD="2014-06-02" OBS_VALUE="7.25287" BBK_DIFF_A="0.03404"/>
      <bbk:Obs TIME_PERIOD="2014-06-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-05-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-05-30" OBS_VALUE="7.21883" BBK_DIFF_A="0.01411"/>
      <bbk:Obs TIME_PERIOD="2014-05-29" OBS_VALUE="7.20472" BBK_DIFF_A="0.25716"/>
      <bbk:Obs TIME_PERIOD="2014-05-28" OBS_VALUE="6.94756" BBK_DIFF_A="0.13132"/>
      <bbk:Obs TIME_PERIOD="2014-05-27" OBS_VALUE="6.81624" BBK_DIFF_A="0.03424"/>
      <bbk:Obs TIME_PERIOD="2014-05-26" OBS_VALUE="6.782" BBK_DIFF_A="0.02315"/>
      <bbk:Obs TIME_PERIOD="2014-05-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-05-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-05-23" OBS_VALUE="6.75885" BBK_DIFF_A="-0.05873"/>
      <bbk:Obs TIME_PERIOD="2014-05-22" OBS_VALUE="6.81758" BBK_DIFF_A="-0.03885"/>
      <bbk:Obs TIME_PERIOD="2014-05-21" OBS_VALUE="6.85643" BBK_DIFF_A="-0.19454"/>
      <bbk:Obs TIME_PERIOD="2014-05-20" OBS_VALUE="7.05097" BBK_DIFF_A="0.01531"/>
      <bbk:Obs TIME_PERIOD="2014-05-19" OBS_VALUE="7.03566" BBK_DIFF_A="-0.05676"/>
      <bbk:Obs TIME_PERIOD="2014-05-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-05-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-05-16" OBS_VALUE="7.09242" BBK_DIFF_A="-0.01245"/>
      <bbk:Obs TIME_PERIOD="2014-05-15" OBS_VALUE="7.10487" BBK_DIFF_A="0.31029"/>
      <bbk:Obs TIME_PERIOD="2014-05-14" OBS_VALUE="6.79458" BBK_DIFF_A="-0.06722"/>
      <bbk:Obs TIME_PERIOD="2014-05-13" OBS_VALUE="6.8618" BBK_DIFF_A="0.10776"/>
      <bbk:Obs TIME_PERIOD="2014-05-12" OBS_VALUE="6.75404" BBK_DIFF_A="0.15075"/>
      <bbk:Obs TIME_PERIOD="2014-05-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-05-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-05-09" OBS_VALUE="6.60329" BBK_DIFF_A="0.02321"/>
      <bbk:Obs TIME_PERIOD="2014-05-08" OBS_VALUE="6.58008" BBK_DIFF_A="-0.01797"/>
      <bbk:Obs TIME_PERIOD="2014-05-07" OBS_VALUE="6.59805" BBK_DIFF_A="-0.01569"/>
      <bbk:Obs TIME_PERIOD="2014-05-06" OBS_VALUE="6.61374" BBK_DIFF_A="0.11511"/>
      <bbk:Obs TIME_PERIOD="2014-05-05" OBS_VALUE="6.49863" BBK_DIFF_A="-0.09014"/>
      <bbk:Obs TIME_PERIOD="2014-05-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-05-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-05-02" OBS_VALUE="6.58877" BBK_DIFF_A="-0.05014"/>
      <bbk:Obs TIME_PERIOD="2014-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-04-30" OBS_VALUE="6.63891" BBK_DIFF_A="0.08923"/>
      <bbk:Obs TIME_PERIOD="2014-04-29" OBS_VALUE="6.54968" BBK_DIFF_A="-0.13681"/>
      <bbk:Obs TIME_PERIOD="2014-04-28" OBS_VALUE="6.68649" BBK_DIFF_A="0.03461"/>
      <bbk:Obs TIME_PERIOD="2014-04-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-04-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-04-25" OBS_VALUE="6.65188" BBK_DIFF_A="-0.19094"/>
      <bbk:Obs TIME_PERIOD="2014-04-24" OBS_VALUE="6.84282" BBK_DIFF_A="0.1205"/>
      <bbk:Obs TIME_PERIOD="2014-04-23" OBS_VALUE="6.72232" BBK_DIFF_A="-0.08303"/>
      <bbk:Obs TIME_PERIOD="2014-04-22" OBS_VALUE="6.80535" BBK_DIFF_A="0.08496"/>
      <bbk:Obs TIME_PERIOD="2014-04-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-04-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-04-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-04-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-04-17" OBS_VALUE="6.72039" BBK_DIFF_A="0.09982"/>
      <bbk:Obs TIME_PERIOD="2014-04-16" OBS_VALUE="6.62057" BBK_DIFF_A="-0.01567"/>
      <bbk:Obs TIME_PERIOD="2014-04-15" OBS_VALUE="6.63624" BBK_DIFF_A="-0.06338"/>
      <bbk:Obs TIME_PERIOD="2014-04-14" OBS_VALUE="6.69962" BBK_DIFF_A="0.01377"/>
      <bbk:Obs TIME_PERIOD="2014-04-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-04-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-04-11" OBS_VALUE="6.68585" BBK_DIFF_A="1.42753"/>
      <bbk:Obs TIME_PERIOD="2014-04-10" OBS_VALUE="5.25832" BBK_DIFF_A="0.08931"/>
      <bbk:Obs TIME_PERIOD="2014-04-09" OBS_VALUE="5.16901" BBK_DIFF_A="-0.11069"/>
      <bbk:Obs TIME_PERIOD="2014-04-08" OBS_VALUE="5.2797" BBK_DIFF_A="0.04235"/>
      <bbk:Obs TIME_PERIOD="2014-04-07" OBS_VALUE="5.23735" BBK_DIFF_A="0.09119"/>
      <bbk:Obs TIME_PERIOD="2014-04-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-04-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-04-04" OBS_VALUE="5.14616" BBK_DIFF_A="0.07505"/>
      <bbk:Obs TIME_PERIOD="2014-04-03" OBS_VALUE="5.07111" BBK_DIFF_A="0.01117"/>
      <bbk:Obs TIME_PERIOD="2014-04-02" OBS_VALUE="5.05994" BBK_DIFF_A="-0.05263"/>
      <bbk:Obs TIME_PERIOD="2014-04-01" OBS_VALUE="5.11257" BBK_DIFF_A="-0.05049"/>
      <bbk:Obs TIME_PERIOD="2014-03-31" OBS_VALUE="5.16306" BBK_DIFF_A="0.02611"/>
      <bbk:Obs TIME_PERIOD="2014-03-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-03-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-03-28" OBS_VALUE="5.13695" BBK_DIFF_A="-0.10568"/>
      <bbk:Obs TIME_PERIOD="2014-03-27" OBS_VALUE="5.24263" BBK_DIFF_A="0.07765"/>
      <bbk:Obs TIME_PERIOD="2014-03-26" OBS_VALUE="5.16498" BBK_DIFF_A="-0.02508"/>
      <bbk:Obs TIME_PERIOD="2014-03-25" OBS_VALUE="5.19006" BBK_DIFF_A="0.06553"/>
      <bbk:Obs TIME_PERIOD="2014-03-24" OBS_VALUE="5.12453" BBK_DIFF_A="-0.05676"/>
      <bbk:Obs TIME_PERIOD="2014-03-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-03-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-03-21" OBS_VALUE="5.18129" BBK_DIFF_A="0.11064"/>
      <bbk:Obs TIME_PERIOD="2014-03-20" OBS_VALUE="5.07065" BBK_DIFF_A="-0.08866"/>
      <bbk:Obs TIME_PERIOD="2014-03-19" OBS_VALUE="5.15931" BBK_DIFF_A="-0.00712"/>
      <bbk:Obs TIME_PERIOD="2014-03-18" OBS_VALUE="5.16643" BBK_DIFF_A="-0.05919"/>
      <bbk:Obs TIME_PERIOD="2014-03-17" OBS_VALUE="5.22562" BBK_DIFF_A="0.05219"/>
      <bbk:Obs TIME_PERIOD="2014-03-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-03-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-03-14" OBS_VALUE="5.17343" BBK_DIFF_A="0.00807"/>
      <bbk:Obs TIME_PERIOD="2014-03-13" OBS_VALUE="5.16536" BBK_DIFF_A="0.03701"/>
      <bbk:Obs TIME_PERIOD="2014-03-12" OBS_VALUE="5.12835" BBK_DIFF_A="0.01273"/>
      <bbk:Obs TIME_PERIOD="2014-03-11" OBS_VALUE="5.11562" BBK_DIFF_A="-0.06903"/>
      <bbk:Obs TIME_PERIOD="2014-03-10" OBS_VALUE="5.18465" BBK_DIFF_A="0.08794"/>
      <bbk:Obs TIME_PERIOD="2014-03-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-03-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-03-07" OBS_VALUE="5.09671" BBK_DIFF_A="0.10139"/>
      <bbk:Obs TIME_PERIOD="2014-03-06" OBS_VALUE="4.99532" BBK_DIFF_A="-0.0106"/>
      <bbk:Obs TIME_PERIOD="2014-03-05" OBS_VALUE="5.00592" BBK_DIFF_A="-0.05356"/>
      <bbk:Obs TIME_PERIOD="2014-03-04" OBS_VALUE="5.05948" BBK_DIFF_A="-0.00617"/>
      <bbk:Obs TIME_PERIOD="2014-03-03" OBS_VALUE="5.06565" BBK_DIFF_A="-0.04053"/>
      <bbk:Obs TIME_PERIOD="2014-03-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-03-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-02-28" OBS_VALUE="5.10618" BBK_DIFF_A="0.11377"/>
      <bbk:Obs TIME_PERIOD="2014-02-27" OBS_VALUE="4.99241" BBK_DIFF_A="0.04082"/>
      <bbk:Obs TIME_PERIOD="2014-02-26" OBS_VALUE="4.95159" BBK_DIFF_A="-0.19277"/>
      <bbk:Obs TIME_PERIOD="2014-02-25" OBS_VALUE="5.14436" BBK_DIFF_A="0.3192"/>
      <bbk:Obs TIME_PERIOD="2014-02-24" OBS_VALUE="4.82516" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2014-02-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-02-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-02-21" OBS_VALUE="4.82516" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2014-02-20" OBS_VALUE="4.82516" BBK_DIFF_A="-1.98361"/>
      <bbk:Obs TIME_PERIOD="2014-02-19" OBS_VALUE="6.80877" BBK_DIFF_A="0.22328"/>
      <bbk:Obs TIME_PERIOD="2014-02-18" OBS_VALUE="6.58549" BBK_DIFF_A="-0.10235"/>
      <bbk:Obs TIME_PERIOD="2014-02-17" OBS_VALUE="6.68784" BBK_DIFF_A="0.17596"/>
      <bbk:Obs TIME_PERIOD="2014-02-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-02-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-02-14" OBS_VALUE="6.51188" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2014-02-13" OBS_VALUE="6.51188" BBK_DIFF_A="-0.35963"/>
      <bbk:Obs TIME_PERIOD="2014-02-12" OBS_VALUE="6.87151" BBK_DIFF_A="0.07657"/>
      <bbk:Obs TIME_PERIOD="2014-02-11" OBS_VALUE="6.79494" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2014-02-10" OBS_VALUE="6.79494" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2014-02-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-02-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-02-07" OBS_VALUE="6.79494" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2014-02-06" OBS_VALUE="6.79494" BBK_DIFF_A="-0.14473"/>
      <bbk:Obs TIME_PERIOD="2014-02-05" OBS_VALUE="6.93967" BBK_DIFF_A="0.37909"/>
      <bbk:Obs TIME_PERIOD="2014-02-04" OBS_VALUE="6.56058" BBK_DIFF_A="0.18529"/>
      <bbk:Obs TIME_PERIOD="2014-02-03" OBS_VALUE="6.37529" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2014-02-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-02-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-01-31" OBS_VALUE="6.37529" BBK_DIFF_A="0.10957"/>
      <bbk:Obs TIME_PERIOD="2014-01-30" OBS_VALUE="6.26572" BBK_DIFF_A="-0.12068"/>
      <bbk:Obs TIME_PERIOD="2014-01-29" OBS_VALUE="6.3864" BBK_DIFF_A="0.06811"/>
      <bbk:Obs TIME_PERIOD="2014-01-28" OBS_VALUE="6.31829" BBK_DIFF_A="-0.22843"/>
      <bbk:Obs TIME_PERIOD="2014-01-27" OBS_VALUE="6.54672" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2014-01-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-01-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-01-24" OBS_VALUE="6.54672" BBK_DIFF_A="0.29489"/>
      <bbk:Obs TIME_PERIOD="2014-01-23" OBS_VALUE="6.25183" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2014-01-22" OBS_VALUE="6.25183" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2014-01-21" OBS_VALUE="6.25183" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2014-01-20" OBS_VALUE="6.25183" BBK_DIFF_A="-0.10886"/>
      <bbk:Obs TIME_PERIOD="2014-01-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-01-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-01-17" OBS_VALUE="6.36069" BBK_DIFF_A="-0.63157"/>
      <bbk:Obs TIME_PERIOD="2014-01-16" OBS_VALUE="6.99226" BBK_DIFF_A="-0.52019"/>
      <bbk:Obs TIME_PERIOD="2014-01-15" OBS_VALUE="7.51245" BBK_DIFF_A="0.36281"/>
      <bbk:Obs TIME_PERIOD="2014-01-14" OBS_VALUE="7.14964" BBK_DIFF_A="-0.93309"/>
      <bbk:Obs TIME_PERIOD="2014-01-13" OBS_VALUE="8.08273" BBK_DIFF_A="-0.47005"/>
      <bbk:Obs TIME_PERIOD="2014-01-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-01-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-01-10" OBS_VALUE="8.55278" BBK_DIFF_A="0.05018"/>
      <bbk:Obs TIME_PERIOD="2014-01-09" OBS_VALUE="8.5026" BBK_DIFF_A="0.59699"/>
      <bbk:Obs TIME_PERIOD="2014-01-08" OBS_VALUE="7.90561" BBK_DIFF_A="-0.00958"/>
      <bbk:Obs TIME_PERIOD="2014-01-07" OBS_VALUE="7.91519" BBK_DIFF_A="-0.52843"/>
      <bbk:Obs TIME_PERIOD="2014-01-06" OBS_VALUE="8.44362" BBK_DIFF_A="-0.40985"/>
      <bbk:Obs TIME_PERIOD="2014-01-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-01-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2014-01-03" OBS_VALUE="8.85347" BBK_DIFF_A="-0.08487"/>
      <bbk:Obs TIME_PERIOD="2014-01-02" OBS_VALUE="8.93834" BBK_DIFF_A="0.05191"/>
      <bbk:Obs TIME_PERIOD="2014-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-12-30" OBS_VALUE="8.88643" BBK_DIFF_A="1.10512"/>
      <bbk:Obs TIME_PERIOD="2013-12-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-12-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-12-27" OBS_VALUE="7.78131" BBK_DIFF_A="-0.04036"/>
      <bbk:Obs TIME_PERIOD="2013-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-12-23" OBS_VALUE="7.82167" BBK_DIFF_A="0.07105"/>
      <bbk:Obs TIME_PERIOD="2013-12-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-12-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-12-20" OBS_VALUE="7.75062" BBK_DIFF_A="1.21417"/>
      <bbk:Obs TIME_PERIOD="2013-12-19" OBS_VALUE="6.53645" BBK_DIFF_A="0.01861"/>
      <bbk:Obs TIME_PERIOD="2013-12-18" OBS_VALUE="6.51784" BBK_DIFF_A="-0.14046"/>
      <bbk:Obs TIME_PERIOD="2013-12-17" OBS_VALUE="6.6583" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2013-12-16" OBS_VALUE="6.6583" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2013-12-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-12-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-12-13" OBS_VALUE="6.6583" BBK_DIFF_A="-0.12165"/>
      <bbk:Obs TIME_PERIOD="2013-12-12" OBS_VALUE="6.77995" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2013-12-11" OBS_VALUE="6.77995" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2013-12-10" OBS_VALUE="6.77995" BBK_DIFF_A="0.03927"/>
      <bbk:Obs TIME_PERIOD="2013-12-09" OBS_VALUE="6.74068" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2013-12-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-12-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-12-06" OBS_VALUE="6.74068" BBK_DIFF_A="0.03907"/>
      <bbk:Obs TIME_PERIOD="2013-12-05" OBS_VALUE="6.70161" BBK_DIFF_A="-0.00447"/>
      <bbk:Obs TIME_PERIOD="2013-12-04" OBS_VALUE="6.70608" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2013-12-03" OBS_VALUE="6.70608" BBK_DIFF_A="-0.03623"/>
      <bbk:Obs TIME_PERIOD="2013-12-02" OBS_VALUE="6.74231" BBK_DIFF_A="-0.07447"/>
      <bbk:Obs TIME_PERIOD="2013-12-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-11-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-11-29" OBS_VALUE="6.81678" BBK_DIFF_A="-0.04242"/>
      <bbk:Obs TIME_PERIOD="2013-11-28" OBS_VALUE="6.8592" BBK_DIFF_A="0.0059"/>
      <bbk:Obs TIME_PERIOD="2013-11-27" OBS_VALUE="6.8533" BBK_DIFF_A="0.05833"/>
      <bbk:Obs TIME_PERIOD="2013-11-26" OBS_VALUE="6.79497" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2013-11-25" OBS_VALUE="6.79497" BBK_DIFF_A="0.03843"/>
      <bbk:Obs TIME_PERIOD="2013-11-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-11-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-11-22" OBS_VALUE="6.75654" BBK_DIFF_A="-0.02595"/>
      <bbk:Obs TIME_PERIOD="2013-11-21" OBS_VALUE="6.78249" BBK_DIFF_A="-0.05326"/>
      <bbk:Obs TIME_PERIOD="2013-11-20" OBS_VALUE="6.83575" BBK_DIFF_A="-0.05063"/>
      <bbk:Obs TIME_PERIOD="2013-11-19" OBS_VALUE="6.88638" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2013-11-18" OBS_VALUE="6.88638" BBK_DIFF_A="0.00373"/>
      <bbk:Obs TIME_PERIOD="2013-11-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-11-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-11-15" OBS_VALUE="6.88265" BBK_DIFF_A="0.02002"/>
      <bbk:Obs TIME_PERIOD="2013-11-14" OBS_VALUE="6.86263" BBK_DIFF_A="0.05174"/>
      <bbk:Obs TIME_PERIOD="2013-11-13" OBS_VALUE="6.81089" BBK_DIFF_A="0.038"/>
      <bbk:Obs TIME_PERIOD="2013-11-12" OBS_VALUE="6.77289" BBK_DIFF_A="-0.03738"/>
      <bbk:Obs TIME_PERIOD="2013-11-11" OBS_VALUE="6.81027" BBK_DIFF_A="-0.10399"/>
      <bbk:Obs TIME_PERIOD="2013-11-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-11-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-11-08" OBS_VALUE="6.91426" BBK_DIFF_A="-0.03787"/>
      <bbk:Obs TIME_PERIOD="2013-11-07" OBS_VALUE="6.95213" BBK_DIFF_A="-0.01172"/>
      <bbk:Obs TIME_PERIOD="2013-11-06" OBS_VALUE="6.96385" BBK_DIFF_A="-0.00739"/>
      <bbk:Obs TIME_PERIOD="2013-11-05" OBS_VALUE="6.97124" BBK_DIFF_A="0.05051"/>
      <bbk:Obs TIME_PERIOD="2013-11-04" OBS_VALUE="6.92073" BBK_DIFF_A="-0.01557"/>
      <bbk:Obs TIME_PERIOD="2013-11-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-11-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-11-01" OBS_VALUE="6.9363" BBK_DIFF_A="-0.11962"/>
      <bbk:Obs TIME_PERIOD="2013-10-31" OBS_VALUE="7.05592" BBK_DIFF_A="0.0072"/>
      <bbk:Obs TIME_PERIOD="2013-10-30" OBS_VALUE="7.04872" BBK_DIFF_A="-0.0187"/>
      <bbk:Obs TIME_PERIOD="2013-10-29" OBS_VALUE="7.06742" BBK_DIFF_A="0.00547"/>
      <bbk:Obs TIME_PERIOD="2013-10-28" OBS_VALUE="7.06195" BBK_DIFF_A="0.03758"/>
      <bbk:Obs TIME_PERIOD="2013-10-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-10-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-10-25" OBS_VALUE="7.02437" BBK_DIFF_A="0.02299"/>
      <bbk:Obs TIME_PERIOD="2013-10-24" OBS_VALUE="7.00138" BBK_DIFF_A="0.04357"/>
      <bbk:Obs TIME_PERIOD="2013-10-23" OBS_VALUE="6.95781" BBK_DIFF_A="0.01603"/>
      <bbk:Obs TIME_PERIOD="2013-10-22" OBS_VALUE="6.94178" BBK_DIFF_A="-0.0459"/>
      <bbk:Obs TIME_PERIOD="2013-10-21" OBS_VALUE="6.98768" BBK_DIFF_A="0.04866"/>
      <bbk:Obs TIME_PERIOD="2013-10-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-10-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-10-18" OBS_VALUE="6.93902" BBK_DIFF_A="0.00292"/>
      <bbk:Obs TIME_PERIOD="2013-10-17" OBS_VALUE="6.9361" BBK_DIFF_A="0.03485"/>
      <bbk:Obs TIME_PERIOD="2013-10-16" OBS_VALUE="6.90125" BBK_DIFF_A="-0.01646"/>
      <bbk:Obs TIME_PERIOD="2013-10-15" OBS_VALUE="6.91771" BBK_DIFF_A="0.00777"/>
      <bbk:Obs TIME_PERIOD="2013-10-14" OBS_VALUE="6.90994" BBK_DIFF_A="-0.00415"/>
      <bbk:Obs TIME_PERIOD="2013-10-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-10-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-10-11" OBS_VALUE="6.91409" BBK_DIFF_A="-0.06802"/>
      <bbk:Obs TIME_PERIOD="2013-10-10" OBS_VALUE="6.98211" BBK_DIFF_A="-0.02246"/>
      <bbk:Obs TIME_PERIOD="2013-10-09" OBS_VALUE="7.00457" BBK_DIFF_A="0.03561"/>
      <bbk:Obs TIME_PERIOD="2013-10-08" OBS_VALUE="6.96896" BBK_DIFF_A="0.02975"/>
      <bbk:Obs TIME_PERIOD="2013-10-07" OBS_VALUE="6.93921" BBK_DIFF_A="-0.0194"/>
      <bbk:Obs TIME_PERIOD="2013-10-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-10-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-10-04" OBS_VALUE="6.95861" BBK_DIFF_A="0.07152"/>
      <bbk:Obs TIME_PERIOD="2013-10-03" OBS_VALUE="6.88709" BBK_DIFF_A="-0.01827"/>
      <bbk:Obs TIME_PERIOD="2013-10-02" OBS_VALUE="6.90536" BBK_DIFF_A="-0.02289"/>
      <bbk:Obs TIME_PERIOD="2013-10-01" OBS_VALUE="6.92825" BBK_DIFF_A="0.12964"/>
      <bbk:Obs TIME_PERIOD="2013-09-30" OBS_VALUE="6.79861" BBK_DIFF_A="0.04581"/>
      <bbk:Obs TIME_PERIOD="2013-09-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-09-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-09-27" OBS_VALUE="6.7528" BBK_DIFF_A="-0.06092"/>
      <bbk:Obs TIME_PERIOD="2013-09-26" OBS_VALUE="6.81372" BBK_DIFF_A="0.02183"/>
      <bbk:Obs TIME_PERIOD="2013-09-25" OBS_VALUE="6.79189" BBK_DIFF_A="0.06949"/>
      <bbk:Obs TIME_PERIOD="2013-09-24" OBS_VALUE="6.7224" BBK_DIFF_A="0.01995"/>
      <bbk:Obs TIME_PERIOD="2013-09-23" OBS_VALUE="6.70245" BBK_DIFF_A="-0.084"/>
      <bbk:Obs TIME_PERIOD="2013-09-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-09-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-09-20" OBS_VALUE="6.78645" BBK_DIFF_A="0.04491"/>
      <bbk:Obs TIME_PERIOD="2013-09-19" OBS_VALUE="6.74154" BBK_DIFF_A="0.06574"/>
      <bbk:Obs TIME_PERIOD="2013-09-18" OBS_VALUE="6.6758" BBK_DIFF_A="-0.02854"/>
      <bbk:Obs TIME_PERIOD="2013-09-17" OBS_VALUE="6.70434" BBK_DIFF_A="0.05105"/>
      <bbk:Obs TIME_PERIOD="2013-09-16" OBS_VALUE="6.65329" BBK_DIFF_A="0.04234"/>
      <bbk:Obs TIME_PERIOD="2013-09-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-09-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-09-13" OBS_VALUE="6.61095" BBK_DIFF_A="-0.0015"/>
      <bbk:Obs TIME_PERIOD="2013-09-12" OBS_VALUE="6.61245" BBK_DIFF_A="-0.00391"/>
      <bbk:Obs TIME_PERIOD="2013-09-11" OBS_VALUE="6.61636" BBK_DIFF_A="-0.04326"/>
      <bbk:Obs TIME_PERIOD="2013-09-10" OBS_VALUE="6.65962" BBK_DIFF_A="-0.04773"/>
      <bbk:Obs TIME_PERIOD="2013-09-09" OBS_VALUE="6.70735" BBK_DIFF_A="0.03836"/>
      <bbk:Obs TIME_PERIOD="2013-09-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-09-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-09-06" OBS_VALUE="6.66899" BBK_DIFF_A="-0.04126"/>
      <bbk:Obs TIME_PERIOD="2013-09-05" OBS_VALUE="6.71025" BBK_DIFF_A="-0.06896"/>
      <bbk:Obs TIME_PERIOD="2013-09-04" OBS_VALUE="6.77921" BBK_DIFF_A="-0.84811"/>
      <bbk:Obs TIME_PERIOD="2013-09-03" OBS_VALUE="7.62732" BBK_DIFF_A="0.1029"/>
      <bbk:Obs TIME_PERIOD="2013-09-02" OBS_VALUE="7.52442" BBK_DIFF_A="0.93656"/>
      <bbk:Obs TIME_PERIOD="2013-09-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-08-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-08-30" OBS_VALUE="6.58786" BBK_DIFF_A="-0.84816"/>
      <bbk:Obs TIME_PERIOD="2013-08-29" OBS_VALUE="7.43602" BBK_DIFF_A="-0.68777"/>
      <bbk:Obs TIME_PERIOD="2013-08-28" OBS_VALUE="8.12379" BBK_DIFF_A="0.34055"/>
      <bbk:Obs TIME_PERIOD="2013-08-27" OBS_VALUE="7.78324" BBK_DIFF_A="1.25649"/>
      <bbk:Obs TIME_PERIOD="2013-08-26" OBS_VALUE="6.52675" BBK_DIFF_A="-0.16359"/>
      <bbk:Obs TIME_PERIOD="2013-08-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-08-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-08-23" OBS_VALUE="6.69034" BBK_DIFF_A="0.27754"/>
      <bbk:Obs TIME_PERIOD="2013-08-22" OBS_VALUE="6.4128" BBK_DIFF_A="-0.15669"/>
      <bbk:Obs TIME_PERIOD="2013-08-21" OBS_VALUE="6.56949" BBK_DIFF_A="-0.25847"/>
      <bbk:Obs TIME_PERIOD="2013-08-20" OBS_VALUE="6.82796" BBK_DIFF_A="0.02567"/>
      <bbk:Obs TIME_PERIOD="2013-08-19" OBS_VALUE="6.80229" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2013-08-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-08-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-08-16" OBS_VALUE="6.80229" BBK_DIFF_A="-0.14206"/>
      <bbk:Obs TIME_PERIOD="2013-08-15" OBS_VALUE="6.94435" BBK_DIFF_A="0.02548"/>
      <bbk:Obs TIME_PERIOD="2013-08-14" OBS_VALUE="6.91887" BBK_DIFF_A="-0.0061"/>
      <bbk:Obs TIME_PERIOD="2013-08-13" OBS_VALUE="6.92497" BBK_DIFF_A="0.03407"/>
      <bbk:Obs TIME_PERIOD="2013-08-12" OBS_VALUE="6.8909" BBK_DIFF_A="-0.02351"/>
      <bbk:Obs TIME_PERIOD="2013-08-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-08-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-08-09" OBS_VALUE="6.91441" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2013-08-08" OBS_VALUE="6.91441" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2013-08-07" OBS_VALUE="6.91441" BBK_DIFF_A="-0.02558"/>
      <bbk:Obs TIME_PERIOD="2013-08-06" OBS_VALUE="6.93999" BBK_DIFF_A="-0.07534"/>
      <bbk:Obs TIME_PERIOD="2013-08-05" OBS_VALUE="7.01533" BBK_DIFF_A="0.06529"/>
      <bbk:Obs TIME_PERIOD="2013-08-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-08-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-08-02" OBS_VALUE="6.95004" BBK_DIFF_A="0.02973"/>
      <bbk:Obs TIME_PERIOD="2013-08-01" OBS_VALUE="6.92031" BBK_DIFF_A="-0.03179"/>
      <bbk:Obs TIME_PERIOD="2013-07-31" OBS_VALUE="6.9521" BBK_DIFF_A="-0.06757"/>
      <bbk:Obs TIME_PERIOD="2013-07-30" OBS_VALUE="7.01967" BBK_DIFF_A="0.00727"/>
      <bbk:Obs TIME_PERIOD="2013-07-29" OBS_VALUE="7.0124" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2013-07-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-07-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-07-26" OBS_VALUE="7.0124" BBK_DIFF_A="0.05933"/>
      <bbk:Obs TIME_PERIOD="2013-07-25" OBS_VALUE="6.95307" BBK_DIFF_A="-0.12408"/>
      <bbk:Obs TIME_PERIOD="2013-07-24" OBS_VALUE="7.07715" BBK_DIFF_A="0.00114"/>
      <bbk:Obs TIME_PERIOD="2013-07-23" OBS_VALUE="7.07601" BBK_DIFF_A="0.0209"/>
      <bbk:Obs TIME_PERIOD="2013-07-22" OBS_VALUE="7.05511" BBK_DIFF_A="0.02952"/>
      <bbk:Obs TIME_PERIOD="2013-07-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-07-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-07-19" OBS_VALUE="7.02559" BBK_DIFF_A="0.01573"/>
      <bbk:Obs TIME_PERIOD="2013-07-18" OBS_VALUE="7.00986" BBK_DIFF_A="0.0199"/>
      <bbk:Obs TIME_PERIOD="2013-07-17" OBS_VALUE="6.98996" BBK_DIFF_A="-0.02171"/>
      <bbk:Obs TIME_PERIOD="2013-07-16" OBS_VALUE="7.01167" BBK_DIFF_A="-0.03382"/>
      <bbk:Obs TIME_PERIOD="2013-07-15" OBS_VALUE="7.04549" BBK_DIFF_A="0.06162"/>
      <bbk:Obs TIME_PERIOD="2013-07-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-07-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-07-12" OBS_VALUE="6.98387" BBK_DIFF_A="0.04053"/>
      <bbk:Obs TIME_PERIOD="2013-07-11" OBS_VALUE="6.94334" BBK_DIFF_A="0.14201"/>
      <bbk:Obs TIME_PERIOD="2013-07-10" OBS_VALUE="6.80133" BBK_DIFF_A="-0.00458"/>
      <bbk:Obs TIME_PERIOD="2013-07-09" OBS_VALUE="6.80591" BBK_DIFF_A="0.01747"/>
      <bbk:Obs TIME_PERIOD="2013-07-08" OBS_VALUE="6.78844" BBK_DIFF_A="-0.12558"/>
      <bbk:Obs TIME_PERIOD="2013-07-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-07-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-07-05" OBS_VALUE="6.91402" BBK_DIFF_A="-0.10821"/>
      <bbk:Obs TIME_PERIOD="2013-07-04" OBS_VALUE="7.02223" BBK_DIFF_A="0.0862"/>
      <bbk:Obs TIME_PERIOD="2013-07-03" OBS_VALUE="6.93603" BBK_DIFF_A="-0.03997"/>
      <bbk:Obs TIME_PERIOD="2013-07-02" OBS_VALUE="6.976" BBK_DIFF_A="0.1977"/>
      <bbk:Obs TIME_PERIOD="2013-07-01" OBS_VALUE="6.7783" BBK_DIFF_A="0.01487"/>
      <bbk:Obs TIME_PERIOD="2013-06-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-06-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-06-28" OBS_VALUE="6.76343" BBK_DIFF_A="0.03291"/>
      <bbk:Obs TIME_PERIOD="2013-06-27" OBS_VALUE="6.73052" BBK_DIFF_A="0.05335"/>
      <bbk:Obs TIME_PERIOD="2013-06-26" OBS_VALUE="6.67717" BBK_DIFF_A="-0.06697"/>
      <bbk:Obs TIME_PERIOD="2013-06-25" OBS_VALUE="6.74414" BBK_DIFF_A="-0.35009"/>
      <bbk:Obs TIME_PERIOD="2013-06-24" OBS_VALUE="7.09423" BBK_DIFF_A="-0.4117"/>
      <bbk:Obs TIME_PERIOD="2013-06-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-06-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-06-21" OBS_VALUE="7.50593" BBK_DIFF_A="-0.04099"/>
      <bbk:Obs TIME_PERIOD="2013-06-20" OBS_VALUE="7.54692" BBK_DIFF_A="0.09989"/>
      <bbk:Obs TIME_PERIOD="2013-06-19" OBS_VALUE="7.44703" BBK_DIFF_A="0.06818"/>
      <bbk:Obs TIME_PERIOD="2013-06-18" OBS_VALUE="7.37885" BBK_DIFF_A="0.03785"/>
      <bbk:Obs TIME_PERIOD="2013-06-17" OBS_VALUE="7.341" BBK_DIFF_A="0.03047"/>
      <bbk:Obs TIME_PERIOD="2013-06-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-06-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-06-14" OBS_VALUE="7.31053" BBK_DIFF_A="-0.04115"/>
      <bbk:Obs TIME_PERIOD="2013-06-13" OBS_VALUE="7.35168" BBK_DIFF_A="-0.00624"/>
      <bbk:Obs TIME_PERIOD="2013-06-12" OBS_VALUE="7.35792" BBK_DIFF_A="-0.11102"/>
      <bbk:Obs TIME_PERIOD="2013-06-11" OBS_VALUE="7.46894" BBK_DIFF_A="1.64218"/>
      <bbk:Obs TIME_PERIOD="2013-06-10" OBS_VALUE="5.82676" BBK_DIFF_A="0.10559"/>
      <bbk:Obs TIME_PERIOD="2013-06-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-06-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-06-07" OBS_VALUE="5.72117" BBK_DIFF_A="0.151"/>
      <bbk:Obs TIME_PERIOD="2013-06-06" OBS_VALUE="5.57017" BBK_DIFF_A="-0.01583"/>
      <bbk:Obs TIME_PERIOD="2013-06-05" OBS_VALUE="5.586" BBK_DIFF_A="-0.01869"/>
      <bbk:Obs TIME_PERIOD="2013-06-04" OBS_VALUE="5.60469" BBK_DIFF_A="0.04656"/>
      <bbk:Obs TIME_PERIOD="2013-06-03" OBS_VALUE="5.55813" BBK_DIFF_A="0.07444"/>
      <bbk:Obs TIME_PERIOD="2013-06-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-06-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-05-31" OBS_VALUE="5.48369" BBK_DIFF_A="-0.04369"/>
      <bbk:Obs TIME_PERIOD="2013-05-30" OBS_VALUE="5.52738" BBK_DIFF_A="0.05031"/>
      <bbk:Obs TIME_PERIOD="2013-05-29" OBS_VALUE="5.47707" BBK_DIFF_A="0.07526"/>
      <bbk:Obs TIME_PERIOD="2013-05-28" OBS_VALUE="5.40181" BBK_DIFF_A="-0.01993"/>
      <bbk:Obs TIME_PERIOD="2013-05-27" OBS_VALUE="5.42174" BBK_DIFF_A="0.03854"/>
      <bbk:Obs TIME_PERIOD="2013-05-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-05-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-05-24" OBS_VALUE="5.3832" BBK_DIFF_A="-0.00535"/>
      <bbk:Obs TIME_PERIOD="2013-05-23" OBS_VALUE="5.38855" BBK_DIFF_A="0.03834"/>
      <bbk:Obs TIME_PERIOD="2013-05-22" OBS_VALUE="5.35021" BBK_DIFF_A="-0.03996"/>
      <bbk:Obs TIME_PERIOD="2013-05-21" OBS_VALUE="5.39017" BBK_DIFF_A="0.04654"/>
      <bbk:Obs TIME_PERIOD="2013-05-20" OBS_VALUE="5.34363" BBK_DIFF_A="-0.05676"/>
      <bbk:Obs TIME_PERIOD="2013-05-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-05-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-05-17" OBS_VALUE="5.40039" BBK_DIFF_A="-0.03185"/>
      <bbk:Obs TIME_PERIOD="2013-05-16" OBS_VALUE="5.43224" BBK_DIFF_A="-0.02262"/>
      <bbk:Obs TIME_PERIOD="2013-05-15" OBS_VALUE="5.45486" BBK_DIFF_A="-0.05686"/>
      <bbk:Obs TIME_PERIOD="2013-05-14" OBS_VALUE="5.51172" BBK_DIFF_A="0.00535"/>
      <bbk:Obs TIME_PERIOD="2013-05-13" OBS_VALUE="5.50637" BBK_DIFF_A="-0.0403"/>
      <bbk:Obs TIME_PERIOD="2013-05-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-05-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-05-10" OBS_VALUE="5.54667" BBK_DIFF_A="-0.06188"/>
      <bbk:Obs TIME_PERIOD="2013-05-09" OBS_VALUE="5.60855" BBK_DIFF_A="-0.03298"/>
      <bbk:Obs TIME_PERIOD="2013-05-08" OBS_VALUE="5.64153" BBK_DIFF_A="0.05362"/>
      <bbk:Obs TIME_PERIOD="2013-05-07" OBS_VALUE="5.58791" BBK_DIFF_A="-0.06329"/>
      <bbk:Obs TIME_PERIOD="2013-05-06" OBS_VALUE="5.6512" BBK_DIFF_A="0.02784"/>
      <bbk:Obs TIME_PERIOD="2013-05-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-05-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-05-03" OBS_VALUE="5.62336" BBK_DIFF_A="-0.06166"/>
      <bbk:Obs TIME_PERIOD="2013-05-02" OBS_VALUE="5.68502" BBK_DIFF_A="0.00592"/>
      <bbk:Obs TIME_PERIOD="2013-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-04-30" OBS_VALUE="5.6791" BBK_DIFF_A="0.0482"/>
      <bbk:Obs TIME_PERIOD="2013-04-29" OBS_VALUE="5.6309" BBK_DIFF_A="0.03178"/>
      <bbk:Obs TIME_PERIOD="2013-04-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-04-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-04-26" OBS_VALUE="5.59912" BBK_DIFF_A="0.07493"/>
      <bbk:Obs TIME_PERIOD="2013-04-25" OBS_VALUE="5.52419" BBK_DIFF_A="0.07671"/>
      <bbk:Obs TIME_PERIOD="2013-04-24" OBS_VALUE="5.44748" BBK_DIFF_A="-0.2093"/>
      <bbk:Obs TIME_PERIOD="2013-04-23" OBS_VALUE="5.65678" BBK_DIFF_A="0.03958"/>
      <bbk:Obs TIME_PERIOD="2013-04-22" OBS_VALUE="5.6172" BBK_DIFF_A="-0.0157"/>
      <bbk:Obs TIME_PERIOD="2013-04-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-04-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-04-19" OBS_VALUE="5.6329" BBK_DIFF_A="-0.03872"/>
      <bbk:Obs TIME_PERIOD="2013-04-18" OBS_VALUE="5.67162" BBK_DIFF_A="0.10445"/>
      <bbk:Obs TIME_PERIOD="2013-04-17" OBS_VALUE="5.56717" BBK_DIFF_A="-0.00228"/>
      <bbk:Obs TIME_PERIOD="2013-04-16" OBS_VALUE="5.56945" BBK_DIFF_A="-0.03097"/>
      <bbk:Obs TIME_PERIOD="2013-04-15" OBS_VALUE="5.60042" BBK_DIFF_A="0.06102"/>
      <bbk:Obs TIME_PERIOD="2013-04-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-04-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-04-12" OBS_VALUE="5.5394" BBK_DIFF_A="-0.04834"/>
      <bbk:Obs TIME_PERIOD="2013-04-11" OBS_VALUE="5.58774" BBK_DIFF_A="0.03954"/>
      <bbk:Obs TIME_PERIOD="2013-04-10" OBS_VALUE="5.5482" BBK_DIFF_A="-1.69523"/>
      <bbk:Obs TIME_PERIOD="2013-04-09" OBS_VALUE="7.24343" BBK_DIFF_A="0.13641"/>
      <bbk:Obs TIME_PERIOD="2013-04-08" OBS_VALUE="7.10702" BBK_DIFF_A="-0.12492"/>
      <bbk:Obs TIME_PERIOD="2013-04-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-04-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-04-05" OBS_VALUE="7.23194" BBK_DIFF_A="-0.02855"/>
      <bbk:Obs TIME_PERIOD="2013-04-04" OBS_VALUE="7.26049" BBK_DIFF_A="0.08306"/>
      <bbk:Obs TIME_PERIOD="2013-04-03" OBS_VALUE="7.17743" BBK_DIFF_A="1.7305"/>
      <bbk:Obs TIME_PERIOD="2013-04-02" OBS_VALUE="5.44693" BBK_DIFF_A="0.12017"/>
      <bbk:Obs TIME_PERIOD="2013-04-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-03-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-03-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-03-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-03-28" OBS_VALUE="5.32676" BBK_DIFF_A="0.02188"/>
      <bbk:Obs TIME_PERIOD="2013-03-27" OBS_VALUE="5.30488" BBK_DIFF_A="-0.04446"/>
      <bbk:Obs TIME_PERIOD="2013-03-26" OBS_VALUE="5.34934" BBK_DIFF_A="0.05556"/>
      <bbk:Obs TIME_PERIOD="2013-03-25" OBS_VALUE="5.29378" BBK_DIFF_A="3.1E-4"/>
      <bbk:Obs TIME_PERIOD="2013-03-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-03-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-03-22" OBS_VALUE="5.29347" BBK_DIFF_A="0.01686"/>
      <bbk:Obs TIME_PERIOD="2013-03-21" OBS_VALUE="5.27661" BBK_DIFF_A="0.02825"/>
      <bbk:Obs TIME_PERIOD="2013-03-20" OBS_VALUE="5.24836" BBK_DIFF_A="-0.00368"/>
      <bbk:Obs TIME_PERIOD="2013-03-19" OBS_VALUE="5.25204" BBK_DIFF_A="-0.0139"/>
      <bbk:Obs TIME_PERIOD="2013-03-18" OBS_VALUE="5.26594" BBK_DIFF_A="-0.03824"/>
      <bbk:Obs TIME_PERIOD="2013-03-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-03-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-03-15" OBS_VALUE="5.30418" BBK_DIFF_A="0.03993"/>
      <bbk:Obs TIME_PERIOD="2013-03-14" OBS_VALUE="5.26425" BBK_DIFF_A="0.01014"/>
      <bbk:Obs TIME_PERIOD="2013-03-13" OBS_VALUE="5.25411" BBK_DIFF_A="-0.08701"/>
      <bbk:Obs TIME_PERIOD="2013-03-12" OBS_VALUE="5.34112" BBK_DIFF_A="0.0553"/>
      <bbk:Obs TIME_PERIOD="2013-03-11" OBS_VALUE="5.28582" BBK_DIFF_A="-0.0307"/>
      <bbk:Obs TIME_PERIOD="2013-03-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-03-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-03-08" OBS_VALUE="5.31652" BBK_DIFF_A="0.05781"/>
      <bbk:Obs TIME_PERIOD="2013-03-07" OBS_VALUE="5.25871" BBK_DIFF_A="-0.00555"/>
      <bbk:Obs TIME_PERIOD="2013-03-06" OBS_VALUE="5.26426" BBK_DIFF_A="-0.04237"/>
      <bbk:Obs TIME_PERIOD="2013-03-05" OBS_VALUE="5.30663" BBK_DIFF_A="-0.00217"/>
      <bbk:Obs TIME_PERIOD="2013-03-04" OBS_VALUE="5.3088" BBK_DIFF_A="0.02847"/>
      <bbk:Obs TIME_PERIOD="2013-03-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-03-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-03-01" OBS_VALUE="5.28033" BBK_DIFF_A="-0.03064"/>
      <bbk:Obs TIME_PERIOD="2013-02-28" OBS_VALUE="5.31097" BBK_DIFF_A="-0.05122"/>
      <bbk:Obs TIME_PERIOD="2013-02-27" OBS_VALUE="5.36219" BBK_DIFF_A="0.0475"/>
      <bbk:Obs TIME_PERIOD="2013-02-26" OBS_VALUE="5.31469" BBK_DIFF_A="0.08749"/>
      <bbk:Obs TIME_PERIOD="2013-02-25" OBS_VALUE="5.2272" BBK_DIFF_A="-0.30717"/>
      <bbk:Obs TIME_PERIOD="2013-02-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-02-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-02-22" OBS_VALUE="5.53437" BBK_DIFF_A="0.00238"/>
      <bbk:Obs TIME_PERIOD="2013-02-21" OBS_VALUE="5.53199" BBK_DIFF_A="0.23318"/>
      <bbk:Obs TIME_PERIOD="2013-02-20" OBS_VALUE="5.29881" BBK_DIFF_A="0.03475"/>
      <bbk:Obs TIME_PERIOD="2013-02-19" OBS_VALUE="5.26406" BBK_DIFF_A="0.05784"/>
      <bbk:Obs TIME_PERIOD="2013-02-18" OBS_VALUE="5.20622" BBK_DIFF_A="-0.02882"/>
      <bbk:Obs TIME_PERIOD="2013-02-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-02-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-02-15" OBS_VALUE="5.23504" BBK_DIFF_A="-0.01387"/>
      <bbk:Obs TIME_PERIOD="2013-02-14" OBS_VALUE="5.24891" BBK_DIFF_A="-0.03031"/>
      <bbk:Obs TIME_PERIOD="2013-02-13" OBS_VALUE="5.27922" BBK_DIFF_A="-0.65979"/>
      <bbk:Obs TIME_PERIOD="2013-02-12" OBS_VALUE="5.93901" BBK_DIFF_A="0.03646"/>
      <bbk:Obs TIME_PERIOD="2013-02-11" OBS_VALUE="5.90255" BBK_DIFF_A="0.05451"/>
      <bbk:Obs TIME_PERIOD="2013-02-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-02-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-02-08" OBS_VALUE="5.84804" BBK_DIFF_A="-0.13924"/>
      <bbk:Obs TIME_PERIOD="2013-02-07" OBS_VALUE="5.98728" BBK_DIFF_A="0.0159"/>
      <bbk:Obs TIME_PERIOD="2013-02-06" OBS_VALUE="5.97138" BBK_DIFF_A="-0.02108"/>
      <bbk:Obs TIME_PERIOD="2013-02-05" OBS_VALUE="5.99246" BBK_DIFF_A="0.05621"/>
      <bbk:Obs TIME_PERIOD="2013-02-04" OBS_VALUE="5.93625" BBK_DIFF_A="-0.12276"/>
      <bbk:Obs TIME_PERIOD="2013-02-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-02-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-02-01" OBS_VALUE="6.05901" BBK_DIFF_A="-0.06372"/>
      <bbk:Obs TIME_PERIOD="2013-01-31" OBS_VALUE="6.12273" BBK_DIFF_A="-0.27661"/>
      <bbk:Obs TIME_PERIOD="2013-01-30" OBS_VALUE="6.39934" BBK_DIFF_A="0.0534"/>
      <bbk:Obs TIME_PERIOD="2013-01-29" OBS_VALUE="6.34594" BBK_DIFF_A="0.03833"/>
      <bbk:Obs TIME_PERIOD="2013-01-28" OBS_VALUE="6.30761" BBK_DIFF_A="0.24129"/>
      <bbk:Obs TIME_PERIOD="2013-01-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-01-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-01-25" OBS_VALUE="6.06632" BBK_DIFF_A="0.1178"/>
      <bbk:Obs TIME_PERIOD="2013-01-24" OBS_VALUE="5.94852" BBK_DIFF_A="-0.02344"/>
      <bbk:Obs TIME_PERIOD="2013-01-23" OBS_VALUE="5.97196" BBK_DIFF_A="-0.10686"/>
      <bbk:Obs TIME_PERIOD="2013-01-22" OBS_VALUE="6.07882" BBK_DIFF_A="0.0657"/>
      <bbk:Obs TIME_PERIOD="2013-01-21" OBS_VALUE="6.01312" BBK_DIFF_A="0.0422"/>
      <bbk:Obs TIME_PERIOD="2013-01-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-01-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-01-18" OBS_VALUE="5.97092" BBK_DIFF_A="0.02329"/>
      <bbk:Obs TIME_PERIOD="2013-01-17" OBS_VALUE="5.94763" BBK_DIFF_A="0.24149"/>
      <bbk:Obs TIME_PERIOD="2013-01-16" OBS_VALUE="5.70614" BBK_DIFF_A="0.61368"/>
      <bbk:Obs TIME_PERIOD="2013-01-15" OBS_VALUE="5.09246" BBK_DIFF_A="0.06666"/>
      <bbk:Obs TIME_PERIOD="2013-01-14" OBS_VALUE="5.0258" BBK_DIFF_A="0.11909"/>
      <bbk:Obs TIME_PERIOD="2013-01-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-01-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-01-11" OBS_VALUE="4.90671" BBK_DIFF_A="0.04613"/>
      <bbk:Obs TIME_PERIOD="2013-01-10" OBS_VALUE="4.86058" BBK_DIFF_A="0.16584"/>
      <bbk:Obs TIME_PERIOD="2013-01-09" OBS_VALUE="4.69474" BBK_DIFF_A="-0.16068"/>
      <bbk:Obs TIME_PERIOD="2013-01-08" OBS_VALUE="4.85542" BBK_DIFF_A="-0.05076"/>
      <bbk:Obs TIME_PERIOD="2013-01-07" OBS_VALUE="4.90618" BBK_DIFF_A="0.0401"/>
      <bbk:Obs TIME_PERIOD="2013-01-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-01-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2013-01-04" OBS_VALUE="4.86608" BBK_DIFF_A="0.03227"/>
      <bbk:Obs TIME_PERIOD="2013-01-03" OBS_VALUE="4.83381" BBK_DIFF_A="0.04449"/>
      <bbk:Obs TIME_PERIOD="2013-01-02" OBS_VALUE="4.78932" BBK_DIFF_A="-0.1963"/>
      <bbk:Obs TIME_PERIOD="2013-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-12-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-12-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-12-28" OBS_VALUE="4.98562" BBK_DIFF_A="-0.07315"/>
      <bbk:Obs TIME_PERIOD="2012-12-27" OBS_VALUE="5.05877" BBK_DIFF_A="0.19836"/>
      <bbk:Obs TIME_PERIOD="2012-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-12-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-12-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-12-21" OBS_VALUE="4.86041" BBK_DIFF_A="-0.0884"/>
      <bbk:Obs TIME_PERIOD="2012-12-20" OBS_VALUE="4.94881" BBK_DIFF_A="0.19303"/>
      <bbk:Obs TIME_PERIOD="2012-12-19" OBS_VALUE="4.75578" BBK_DIFF_A="-0.08707"/>
      <bbk:Obs TIME_PERIOD="2012-12-18" OBS_VALUE="4.84285" BBK_DIFF_A="0.04324"/>
      <bbk:Obs TIME_PERIOD="2012-12-17" OBS_VALUE="4.79961" BBK_DIFF_A="-0.02606"/>
      <bbk:Obs TIME_PERIOD="2012-12-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-12-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-12-14" OBS_VALUE="4.82567" BBK_DIFF_A="-0.00973"/>
      <bbk:Obs TIME_PERIOD="2012-12-13" OBS_VALUE="4.8354" BBK_DIFF_A="-0.15594"/>
      <bbk:Obs TIME_PERIOD="2012-12-12" OBS_VALUE="4.99134" BBK_DIFF_A="-0.09976"/>
      <bbk:Obs TIME_PERIOD="2012-12-11" OBS_VALUE="5.0911" BBK_DIFF_A="-0.06133"/>
      <bbk:Obs TIME_PERIOD="2012-12-10" OBS_VALUE="5.15243" BBK_DIFF_A="0.07162"/>
      <bbk:Obs TIME_PERIOD="2012-12-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-12-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-12-07" OBS_VALUE="5.08081" BBK_DIFF_A="-0.12262"/>
      <bbk:Obs TIME_PERIOD="2012-12-06" OBS_VALUE="5.20343" BBK_DIFF_A="0.08276"/>
      <bbk:Obs TIME_PERIOD="2012-12-05" OBS_VALUE="5.12067" BBK_DIFF_A="-0.05535"/>
      <bbk:Obs TIME_PERIOD="2012-12-04" OBS_VALUE="5.17602" BBK_DIFF_A="0.06887"/>
      <bbk:Obs TIME_PERIOD="2012-12-03" OBS_VALUE="5.10715" BBK_DIFF_A="-0.00271"/>
      <bbk:Obs TIME_PERIOD="2012-12-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-12-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-11-30" OBS_VALUE="5.10986" BBK_DIFF_A="0.08499"/>
      <bbk:Obs TIME_PERIOD="2012-11-29" OBS_VALUE="5.02487" BBK_DIFF_A="0.85289"/>
      <bbk:Obs TIME_PERIOD="2012-11-28" OBS_VALUE="4.17198" BBK_DIFF_A="-0.71384"/>
      <bbk:Obs TIME_PERIOD="2012-11-27" OBS_VALUE="4.88582" BBK_DIFF_A="0.00321"/>
      <bbk:Obs TIME_PERIOD="2012-11-26" OBS_VALUE="4.88261" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2012-11-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-11-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-11-23" OBS_VALUE="4.88261" BBK_DIFF_A="-0.00243"/>
      <bbk:Obs TIME_PERIOD="2012-11-22" OBS_VALUE="4.88504" BBK_DIFF_A="-0.03411"/>
      <bbk:Obs TIME_PERIOD="2012-11-21" OBS_VALUE="4.91915" BBK_DIFF_A="-0.00699"/>
      <bbk:Obs TIME_PERIOD="2012-11-20" OBS_VALUE="4.92614" BBK_DIFF_A="-0.07164"/>
      <bbk:Obs TIME_PERIOD="2012-11-19" OBS_VALUE="4.99778" BBK_DIFF_A="-0.04203"/>
      <bbk:Obs TIME_PERIOD="2012-11-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-11-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-11-16" OBS_VALUE="5.03981" BBK_DIFF_A="0.00874"/>
      <bbk:Obs TIME_PERIOD="2012-11-15" OBS_VALUE="5.03107" BBK_DIFF_A="0.10229"/>
      <bbk:Obs TIME_PERIOD="2012-11-14" OBS_VALUE="4.92878" BBK_DIFF_A="-0.02897"/>
      <bbk:Obs TIME_PERIOD="2012-11-13" OBS_VALUE="4.95775" BBK_DIFF_A="0.02477"/>
      <bbk:Obs TIME_PERIOD="2012-11-12" OBS_VALUE="4.93298" BBK_DIFF_A="0.00416"/>
      <bbk:Obs TIME_PERIOD="2012-11-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-11-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-11-09" OBS_VALUE="4.92882" BBK_DIFF_A="0.11494"/>
      <bbk:Obs TIME_PERIOD="2012-11-08" OBS_VALUE="4.81388" BBK_DIFF_A="0.09457"/>
      <bbk:Obs TIME_PERIOD="2012-11-07" OBS_VALUE="4.71931" BBK_DIFF_A="-0.00615"/>
      <bbk:Obs TIME_PERIOD="2012-11-06" OBS_VALUE="4.72546" BBK_DIFF_A="-0.01092"/>
      <bbk:Obs TIME_PERIOD="2012-11-05" OBS_VALUE="4.73638" BBK_DIFF_A="-0.04124"/>
      <bbk:Obs TIME_PERIOD="2012-11-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-11-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-11-02" OBS_VALUE="4.77762" BBK_DIFF_A="0.03255"/>
      <bbk:Obs TIME_PERIOD="2012-11-01" OBS_VALUE="4.74507" BBK_DIFF_A="-0.04572"/>
      <bbk:Obs TIME_PERIOD="2012-10-31" OBS_VALUE="4.79079" BBK_DIFF_A="-0.05932"/>
      <bbk:Obs TIME_PERIOD="2012-10-30" OBS_VALUE="4.85011" BBK_DIFF_A="-0.00928"/>
      <bbk:Obs TIME_PERIOD="2012-10-29" OBS_VALUE="4.85939" BBK_DIFF_A="-0.01332"/>
      <bbk:Obs TIME_PERIOD="2012-10-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-10-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-10-26" OBS_VALUE="4.87271" BBK_DIFF_A="-0.00465"/>
      <bbk:Obs TIME_PERIOD="2012-10-25" OBS_VALUE="4.87736" BBK_DIFF_A="-0.09124"/>
      <bbk:Obs TIME_PERIOD="2012-10-24" OBS_VALUE="4.9686" BBK_DIFF_A="0.0822"/>
      <bbk:Obs TIME_PERIOD="2012-10-23" OBS_VALUE="4.8864" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2012-10-22" OBS_VALUE="4.8864" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2012-10-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-10-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-10-19" OBS_VALUE="4.8864" BBK_DIFF_A="-0.90561"/>
      <bbk:Obs TIME_PERIOD="2012-10-18" OBS_VALUE="5.79201" BBK_DIFF_A="0.04212"/>
      <bbk:Obs TIME_PERIOD="2012-10-17" OBS_VALUE="5.74989" BBK_DIFF_A="-0.21557"/>
      <bbk:Obs TIME_PERIOD="2012-10-16" OBS_VALUE="5.96546" BBK_DIFF_A="-8.5E-4"/>
      <bbk:Obs TIME_PERIOD="2012-10-15" OBS_VALUE="5.96631" BBK_DIFF_A="0.06262"/>
      <bbk:Obs TIME_PERIOD="2012-10-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-10-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-10-12" OBS_VALUE="5.90369" BBK_DIFF_A="-0.23626"/>
      <bbk:Obs TIME_PERIOD="2012-10-11" OBS_VALUE="6.13995" BBK_DIFF_A="0.03144"/>
      <bbk:Obs TIME_PERIOD="2012-10-10" OBS_VALUE="6.10851" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2012-10-09" OBS_VALUE="6.10851" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2012-10-08" OBS_VALUE="6.10851" BBK_DIFF_A="-0.04193"/>
      <bbk:Obs TIME_PERIOD="2012-10-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-10-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-10-05" OBS_VALUE="6.15044" BBK_DIFF_A="0.13002"/>
      <bbk:Obs TIME_PERIOD="2012-10-04" OBS_VALUE="6.02042" BBK_DIFF_A="-0.16421"/>
      <bbk:Obs TIME_PERIOD="2012-10-03" OBS_VALUE="6.18463" BBK_DIFF_A="0.05002"/>
      <bbk:Obs TIME_PERIOD="2012-10-02" OBS_VALUE="6.13461" BBK_DIFF_A="-0.20183"/>
      <bbk:Obs TIME_PERIOD="2012-10-01" OBS_VALUE="6.33644" BBK_DIFF_A="-0.23735"/>
      <bbk:Obs TIME_PERIOD="2012-09-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-09-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-09-28" OBS_VALUE="6.57379" BBK_DIFF_A="0.11229"/>
      <bbk:Obs TIME_PERIOD="2012-09-27" OBS_VALUE="6.4615" BBK_DIFF_A="0.05644"/>
      <bbk:Obs TIME_PERIOD="2012-09-26" OBS_VALUE="6.40506" BBK_DIFF_A="0.17181"/>
      <bbk:Obs TIME_PERIOD="2012-09-25" OBS_VALUE="6.23325" BBK_DIFF_A="0.08676"/>
      <bbk:Obs TIME_PERIOD="2012-09-24" OBS_VALUE="6.14649" BBK_DIFF_A="0.19846"/>
      <bbk:Obs TIME_PERIOD="2012-09-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-09-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-09-21" OBS_VALUE="5.94803" BBK_DIFF_A="1.1631"/>
      <bbk:Obs TIME_PERIOD="2012-09-20" OBS_VALUE="4.78493" BBK_DIFF_A="0.54295"/>
      <bbk:Obs TIME_PERIOD="2012-09-19" OBS_VALUE="4.24198" BBK_DIFF_A="-1.28658"/>
      <bbk:Obs TIME_PERIOD="2012-09-18" OBS_VALUE="5.52856" BBK_DIFF_A="0.73374"/>
      <bbk:Obs TIME_PERIOD="2012-09-17" OBS_VALUE="4.79482" BBK_DIFF_A="-0.3663"/>
      <bbk:Obs TIME_PERIOD="2012-09-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-09-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-09-14" OBS_VALUE="5.16112" BBK_DIFF_A="0.22976"/>
      <bbk:Obs TIME_PERIOD="2012-09-13" OBS_VALUE="4.93136" BBK_DIFF_A="0.10276"/>
      <bbk:Obs TIME_PERIOD="2012-09-12" OBS_VALUE="4.8286" BBK_DIFF_A="-0.16799"/>
      <bbk:Obs TIME_PERIOD="2012-09-11" OBS_VALUE="4.99659" BBK_DIFF_A="-1.21396"/>
      <bbk:Obs TIME_PERIOD="2012-09-10" OBS_VALUE="6.21055" BBK_DIFF_A="0.14331"/>
      <bbk:Obs TIME_PERIOD="2012-09-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-09-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-09-07" OBS_VALUE="6.06724" BBK_DIFF_A="0.1576"/>
      <bbk:Obs TIME_PERIOD="2012-09-06" OBS_VALUE="5.90964" BBK_DIFF_A="0.30002"/>
      <bbk:Obs TIME_PERIOD="2012-09-05" OBS_VALUE="5.60962" BBK_DIFF_A="0.04686"/>
      <bbk:Obs TIME_PERIOD="2012-09-04" OBS_VALUE="5.56276" BBK_DIFF_A="-0.10246"/>
      <bbk:Obs TIME_PERIOD="2012-09-03" OBS_VALUE="5.66522" BBK_DIFF_A="-0.13343"/>
      <bbk:Obs TIME_PERIOD="2012-09-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-09-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-08-31" OBS_VALUE="5.79865" BBK_DIFF_A="-0.14763"/>
      <bbk:Obs TIME_PERIOD="2012-08-30" OBS_VALUE="5.94628" BBK_DIFF_A="-0.20238"/>
      <bbk:Obs TIME_PERIOD="2012-08-29" OBS_VALUE="6.14866" BBK_DIFF_A="0.32065"/>
      <bbk:Obs TIME_PERIOD="2012-08-28" OBS_VALUE="5.82801" BBK_DIFF_A="-0.12311"/>
      <bbk:Obs TIME_PERIOD="2012-08-27" OBS_VALUE="5.95112" BBK_DIFF_A="0.2357"/>
      <bbk:Obs TIME_PERIOD="2012-08-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-08-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-08-24" OBS_VALUE="5.71542" BBK_DIFF_A="0.07332"/>
      <bbk:Obs TIME_PERIOD="2012-08-23" OBS_VALUE="5.6421" BBK_DIFF_A="0.31105"/>
      <bbk:Obs TIME_PERIOD="2012-08-22" OBS_VALUE="5.33105" BBK_DIFF_A="0.06612"/>
      <bbk:Obs TIME_PERIOD="2012-08-21" OBS_VALUE="5.26493" BBK_DIFF_A="0.08423"/>
      <bbk:Obs TIME_PERIOD="2012-08-20" OBS_VALUE="5.1807" BBK_DIFF_A="-0.07133"/>
      <bbk:Obs TIME_PERIOD="2012-08-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-08-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-08-17" OBS_VALUE="5.25203" BBK_DIFF_A="-0.04241"/>
      <bbk:Obs TIME_PERIOD="2012-08-16" OBS_VALUE="5.29444" BBK_DIFF_A="-0.12689"/>
      <bbk:Obs TIME_PERIOD="2012-08-15" OBS_VALUE="5.42133" BBK_DIFF_A="-0.25624"/>
      <bbk:Obs TIME_PERIOD="2012-08-14" OBS_VALUE="5.67757" BBK_DIFF_A="-0.01922"/>
      <bbk:Obs TIME_PERIOD="2012-08-13" OBS_VALUE="5.69679" BBK_DIFF_A="0.06432"/>
      <bbk:Obs TIME_PERIOD="2012-08-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-08-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-08-10" OBS_VALUE="5.63247" BBK_DIFF_A="0.05429"/>
      <bbk:Obs TIME_PERIOD="2012-08-09" OBS_VALUE="5.57818" BBK_DIFF_A="0.14957"/>
      <bbk:Obs TIME_PERIOD="2012-08-08" OBS_VALUE="5.42861" BBK_DIFF_A="-0.0107"/>
      <bbk:Obs TIME_PERIOD="2012-08-07" OBS_VALUE="5.43931" BBK_DIFF_A="-0.1363"/>
      <bbk:Obs TIME_PERIOD="2012-08-06" OBS_VALUE="5.57561" BBK_DIFF_A="-0.27694"/>
      <bbk:Obs TIME_PERIOD="2012-08-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-08-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-08-03" OBS_VALUE="5.85255" BBK_DIFF_A="0.11601"/>
      <bbk:Obs TIME_PERIOD="2012-08-02" OBS_VALUE="5.73654" BBK_DIFF_A="-0.04672"/>
      <bbk:Obs TIME_PERIOD="2012-08-01" OBS_VALUE="5.78326" BBK_DIFF_A="-0.19462"/>
      <bbk:Obs TIME_PERIOD="2012-07-31" OBS_VALUE="5.97788" BBK_DIFF_A="0.06255"/>
      <bbk:Obs TIME_PERIOD="2012-07-30" OBS_VALUE="5.91533" BBK_DIFF_A="-0.29222"/>
      <bbk:Obs TIME_PERIOD="2012-07-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-07-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-07-27" OBS_VALUE="6.20755" BBK_DIFF_A="-0.26753"/>
      <bbk:Obs TIME_PERIOD="2012-07-26" OBS_VALUE="6.47508" BBK_DIFF_A="0.25267"/>
      <bbk:Obs TIME_PERIOD="2012-07-25" OBS_VALUE="6.22241" BBK_DIFF_A="-0.27839"/>
      <bbk:Obs TIME_PERIOD="2012-07-24" OBS_VALUE="6.5008" BBK_DIFF_A="-0.35551"/>
      <bbk:Obs TIME_PERIOD="2012-07-23" OBS_VALUE="6.85631" BBK_DIFF_A="0.46564"/>
      <bbk:Obs TIME_PERIOD="2012-07-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-07-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-07-20" OBS_VALUE="6.39067" BBK_DIFF_A="0.0468"/>
      <bbk:Obs TIME_PERIOD="2012-07-19" OBS_VALUE="6.34387" BBK_DIFF_A="-0.08958"/>
      <bbk:Obs TIME_PERIOD="2012-07-18" OBS_VALUE="6.43345" BBK_DIFF_A="-0.09764"/>
      <bbk:Obs TIME_PERIOD="2012-07-17" OBS_VALUE="6.53109" BBK_DIFF_A="0.09702"/>
      <bbk:Obs TIME_PERIOD="2012-07-16" OBS_VALUE="6.43407" BBK_DIFF_A="-0.15886"/>
      <bbk:Obs TIME_PERIOD="2012-07-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-07-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-07-13" OBS_VALUE="6.59293" BBK_DIFF_A="-0.19351"/>
      <bbk:Obs TIME_PERIOD="2012-07-12" OBS_VALUE="6.78644" BBK_DIFF_A="-0.04813"/>
      <bbk:Obs TIME_PERIOD="2012-07-11" OBS_VALUE="6.83457" BBK_DIFF_A="-0.02832"/>
      <bbk:Obs TIME_PERIOD="2012-07-10" OBS_VALUE="6.86289" BBK_DIFF_A="-0.24071"/>
      <bbk:Obs TIME_PERIOD="2012-07-09" OBS_VALUE="7.1036" BBK_DIFF_A="0.05385"/>
      <bbk:Obs TIME_PERIOD="2012-07-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-07-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-07-06" OBS_VALUE="7.04975" BBK_DIFF_A="-0.00595"/>
      <bbk:Obs TIME_PERIOD="2012-07-05" OBS_VALUE="7.0557" BBK_DIFF_A="0.1104"/>
      <bbk:Obs TIME_PERIOD="2012-07-04" OBS_VALUE="6.9453" BBK_DIFF_A="-0.00435"/>
      <bbk:Obs TIME_PERIOD="2012-07-03" OBS_VALUE="6.94965" BBK_DIFF_A="0.16418"/>
      <bbk:Obs TIME_PERIOD="2012-07-02" OBS_VALUE="6.78547" BBK_DIFF_A="0.01045"/>
      <bbk:Obs TIME_PERIOD="2012-07-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-06-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-06-29" OBS_VALUE="6.77502" BBK_DIFF_A="-0.00446"/>
      <bbk:Obs TIME_PERIOD="2012-06-28" OBS_VALUE="6.77948" BBK_DIFF_A="0.11654"/>
      <bbk:Obs TIME_PERIOD="2012-06-27" OBS_VALUE="6.66294" BBK_DIFF_A="0.09368"/>
      <bbk:Obs TIME_PERIOD="2012-06-26" OBS_VALUE="6.56926" BBK_DIFF_A="0.31367"/>
      <bbk:Obs TIME_PERIOD="2012-06-25" OBS_VALUE="6.25559" BBK_DIFF_A="0.13509"/>
      <bbk:Obs TIME_PERIOD="2012-06-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-06-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-06-22" OBS_VALUE="6.1205" BBK_DIFF_A="-0.64201"/>
      <bbk:Obs TIME_PERIOD="2012-06-21" OBS_VALUE="6.76251" BBK_DIFF_A="0.26657"/>
      <bbk:Obs TIME_PERIOD="2012-06-20" OBS_VALUE="6.49594" BBK_DIFF_A="-0.11362"/>
      <bbk:Obs TIME_PERIOD="2012-06-19" OBS_VALUE="6.60956" BBK_DIFF_A="0.24485"/>
      <bbk:Obs TIME_PERIOD="2012-06-18" OBS_VALUE="6.36471" BBK_DIFF_A="-0.39758"/>
      <bbk:Obs TIME_PERIOD="2012-06-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-06-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-06-15" OBS_VALUE="6.76229" BBK_DIFF_A="-0.11615"/>
      <bbk:Obs TIME_PERIOD="2012-06-14" OBS_VALUE="6.87844" BBK_DIFF_A="0.05064"/>
      <bbk:Obs TIME_PERIOD="2012-06-13" OBS_VALUE="6.8278" BBK_DIFF_A="0.09848"/>
      <bbk:Obs TIME_PERIOD="2012-06-12" OBS_VALUE="6.72932" BBK_DIFF_A="0.15962"/>
      <bbk:Obs TIME_PERIOD="2012-06-11" OBS_VALUE="6.5697" BBK_DIFF_A="0.0742"/>
      <bbk:Obs TIME_PERIOD="2012-06-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-06-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-06-08" OBS_VALUE="6.4955" BBK_DIFF_A="0.00702"/>
      <bbk:Obs TIME_PERIOD="2012-06-07" OBS_VALUE="6.48848" BBK_DIFF_A="0.11733"/>
      <bbk:Obs TIME_PERIOD="2012-06-06" OBS_VALUE="6.37115" BBK_DIFF_A="0.08009"/>
      <bbk:Obs TIME_PERIOD="2012-06-05" OBS_VALUE="6.29106" BBK_DIFF_A="0.02604"/>
      <bbk:Obs TIME_PERIOD="2012-06-04" OBS_VALUE="6.26502" BBK_DIFF_A="-0.0229"/>
      <bbk:Obs TIME_PERIOD="2012-06-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-06-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-06-01" OBS_VALUE="6.28792" BBK_DIFF_A="-0.0823"/>
      <bbk:Obs TIME_PERIOD="2012-05-31" OBS_VALUE="6.37022" BBK_DIFF_A="0.05052"/>
      <bbk:Obs TIME_PERIOD="2012-05-30" OBS_VALUE="6.3197" BBK_DIFF_A="-0.10964"/>
      <bbk:Obs TIME_PERIOD="2012-05-29" OBS_VALUE="6.42934" BBK_DIFF_A="-0.1102"/>
      <bbk:Obs TIME_PERIOD="2012-05-28" OBS_VALUE="6.53954" BBK_DIFF_A="-0.03965"/>
      <bbk:Obs TIME_PERIOD="2012-05-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-05-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-05-25" OBS_VALUE="6.57919" BBK_DIFF_A="0.18022"/>
      <bbk:Obs TIME_PERIOD="2012-05-24" OBS_VALUE="6.39897" BBK_DIFF_A="-0.17226"/>
      <bbk:Obs TIME_PERIOD="2012-05-23" OBS_VALUE="6.57123" BBK_DIFF_A="-0.0107"/>
      <bbk:Obs TIME_PERIOD="2012-05-22" OBS_VALUE="6.58193" BBK_DIFF_A="-0.05663"/>
      <bbk:Obs TIME_PERIOD="2012-05-21" OBS_VALUE="6.63856" BBK_DIFF_A="-0.00587"/>
      <bbk:Obs TIME_PERIOD="2012-05-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-05-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-05-18" OBS_VALUE="6.64443" BBK_DIFF_A="0.00261"/>
      <bbk:Obs TIME_PERIOD="2012-05-17" OBS_VALUE="6.64182" BBK_DIFF_A="-0.00806"/>
      <bbk:Obs TIME_PERIOD="2012-05-16" OBS_VALUE="6.64988" BBK_DIFF_A="0.02727"/>
      <bbk:Obs TIME_PERIOD="2012-05-15" OBS_VALUE="6.62261" BBK_DIFF_A="0.0393"/>
      <bbk:Obs TIME_PERIOD="2012-05-14" OBS_VALUE="6.58331" BBK_DIFF_A="-0.03172"/>
      <bbk:Obs TIME_PERIOD="2012-05-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-05-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-05-11" OBS_VALUE="6.61503" BBK_DIFF_A="-0.03672"/>
      <bbk:Obs TIME_PERIOD="2012-05-10" OBS_VALUE="6.65175" BBK_DIFF_A="-0.05897"/>
      <bbk:Obs TIME_PERIOD="2012-05-09" OBS_VALUE="6.71072" BBK_DIFF_A="0.03732"/>
      <bbk:Obs TIME_PERIOD="2012-05-08" OBS_VALUE="6.6734" BBK_DIFF_A="-0.00401"/>
      <bbk:Obs TIME_PERIOD="2012-05-07" OBS_VALUE="6.67741" BBK_DIFF_A="0.02795"/>
      <bbk:Obs TIME_PERIOD="2012-05-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-05-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-05-04" OBS_VALUE="6.64946" BBK_DIFF_A="0.01787"/>
      <bbk:Obs TIME_PERIOD="2012-05-03" OBS_VALUE="6.63159" BBK_DIFF_A="0.06768"/>
      <bbk:Obs TIME_PERIOD="2012-05-02" OBS_VALUE="6.56391" BBK_DIFF_A="0.02961"/>
      <bbk:Obs TIME_PERIOD="2012-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-04-30" OBS_VALUE="6.5343" BBK_DIFF_A="-0.06159"/>
      <bbk:Obs TIME_PERIOD="2012-04-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-04-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-04-27" OBS_VALUE="6.59589" BBK_DIFF_A="0.03536"/>
      <bbk:Obs TIME_PERIOD="2012-04-26" OBS_VALUE="6.56053" BBK_DIFF_A="-0.06162"/>
      <bbk:Obs TIME_PERIOD="2012-04-25" OBS_VALUE="6.62215" BBK_DIFF_A="-0.07512"/>
      <bbk:Obs TIME_PERIOD="2012-04-24" OBS_VALUE="6.69727" BBK_DIFF_A="0.14131"/>
      <bbk:Obs TIME_PERIOD="2012-04-23" OBS_VALUE="6.55596" BBK_DIFF_A="-0.02285"/>
      <bbk:Obs TIME_PERIOD="2012-04-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-04-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-04-20" OBS_VALUE="6.57881" BBK_DIFF_A="0.05961"/>
      <bbk:Obs TIME_PERIOD="2012-04-19" OBS_VALUE="6.5192" BBK_DIFF_A="0.06832"/>
      <bbk:Obs TIME_PERIOD="2012-04-18" OBS_VALUE="6.45088" BBK_DIFF_A="-0.03124"/>
      <bbk:Obs TIME_PERIOD="2012-04-17" OBS_VALUE="6.48212" BBK_DIFF_A="0.03927"/>
      <bbk:Obs TIME_PERIOD="2012-04-16" OBS_VALUE="6.44285" BBK_DIFF_A="0.03414"/>
      <bbk:Obs TIME_PERIOD="2012-04-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-04-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-04-13" OBS_VALUE="6.40871" BBK_DIFF_A="0.04949"/>
      <bbk:Obs TIME_PERIOD="2012-04-12" OBS_VALUE="6.35922" BBK_DIFF_A="0.03795"/>
      <bbk:Obs TIME_PERIOD="2012-04-11" OBS_VALUE="6.32127" BBK_DIFF_A="0.0215"/>
      <bbk:Obs TIME_PERIOD="2012-04-10" OBS_VALUE="6.29977" BBK_DIFF_A="0.0971"/>
      <bbk:Obs TIME_PERIOD="2012-04-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-04-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-04-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-04-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-04-05" OBS_VALUE="6.20267" BBK_DIFF_A="-0.08495"/>
      <bbk:Obs TIME_PERIOD="2012-04-04" OBS_VALUE="6.28762" BBK_DIFF_A="-0.03616"/>
      <bbk:Obs TIME_PERIOD="2012-04-03" OBS_VALUE="6.32378" BBK_DIFF_A="-0.02171"/>
      <bbk:Obs TIME_PERIOD="2012-04-02" OBS_VALUE="6.34549" BBK_DIFF_A="-0.04084"/>
      <bbk:Obs TIME_PERIOD="2012-04-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-03-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-03-30" OBS_VALUE="6.38633" BBK_DIFF_A="0.00483"/>
      <bbk:Obs TIME_PERIOD="2012-03-29" OBS_VALUE="6.3815" BBK_DIFF_A="0.07065"/>
      <bbk:Obs TIME_PERIOD="2012-03-28" OBS_VALUE="6.31085" BBK_DIFF_A="0.02268"/>
      <bbk:Obs TIME_PERIOD="2012-03-27" OBS_VALUE="6.28817" BBK_DIFF_A="-0.00473"/>
      <bbk:Obs TIME_PERIOD="2012-03-26" OBS_VALUE="6.2929" BBK_DIFF_A="-0.03148"/>
      <bbk:Obs TIME_PERIOD="2012-03-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-03-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-03-23" OBS_VALUE="6.32438" BBK_DIFF_A="-0.0493"/>
      <bbk:Obs TIME_PERIOD="2012-03-22" OBS_VALUE="6.37368" BBK_DIFF_A="0.03473"/>
      <bbk:Obs TIME_PERIOD="2012-03-21" OBS_VALUE="6.33895" BBK_DIFF_A="-0.06785"/>
      <bbk:Obs TIME_PERIOD="2012-03-20" OBS_VALUE="6.4068" BBK_DIFF_A="-0.05969"/>
      <bbk:Obs TIME_PERIOD="2012-03-19" OBS_VALUE="6.46649" BBK_DIFF_A="0.03272"/>
      <bbk:Obs TIME_PERIOD="2012-03-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-03-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-03-16" OBS_VALUE="6.43377" BBK_DIFF_A="0.01268"/>
      <bbk:Obs TIME_PERIOD="2012-03-15" OBS_VALUE="6.42109" BBK_DIFF_A="0.14588"/>
      <bbk:Obs TIME_PERIOD="2012-03-14" OBS_VALUE="6.27521" BBK_DIFF_A="-0.04724"/>
      <bbk:Obs TIME_PERIOD="2012-03-13" OBS_VALUE="6.32245" BBK_DIFF_A="0.03973"/>
      <bbk:Obs TIME_PERIOD="2012-03-12" OBS_VALUE="6.28272" BBK_DIFF_A="0.02322"/>
      <bbk:Obs TIME_PERIOD="2012-03-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-03-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-03-09" OBS_VALUE="6.2595" BBK_DIFF_A="0.02314"/>
      <bbk:Obs TIME_PERIOD="2012-03-08" OBS_VALUE="6.23636" BBK_DIFF_A="-0.10148"/>
      <bbk:Obs TIME_PERIOD="2012-03-07" OBS_VALUE="6.33784" BBK_DIFF_A="0.04353"/>
      <bbk:Obs TIME_PERIOD="2012-03-06" OBS_VALUE="6.29431" BBK_DIFF_A="-0.03582"/>
      <bbk:Obs TIME_PERIOD="2012-03-05" OBS_VALUE="6.33013" BBK_DIFF_A="0.06426"/>
      <bbk:Obs TIME_PERIOD="2012-03-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-03-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-03-02" OBS_VALUE="6.26587" BBK_DIFF_A="-0.00899"/>
      <bbk:Obs TIME_PERIOD="2012-03-01" OBS_VALUE="6.27486" BBK_DIFF_A="-0.0809"/>
      <bbk:Obs TIME_PERIOD="2012-02-29" OBS_VALUE="6.35576" BBK_DIFF_A="0.08574"/>
      <bbk:Obs TIME_PERIOD="2012-02-28" OBS_VALUE="6.27002" BBK_DIFF_A="0.03057"/>
      <bbk:Obs TIME_PERIOD="2012-02-27" OBS_VALUE="6.23945" BBK_DIFF_A="-0.04019"/>
      <bbk:Obs TIME_PERIOD="2012-02-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-02-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-02-24" OBS_VALUE="6.27964" BBK_DIFF_A="-0.02608"/>
      <bbk:Obs TIME_PERIOD="2012-02-23" OBS_VALUE="6.30572" BBK_DIFF_A="0.06433"/>
      <bbk:Obs TIME_PERIOD="2012-02-22" OBS_VALUE="6.24139" BBK_DIFF_A="0.02721"/>
      <bbk:Obs TIME_PERIOD="2012-02-21" OBS_VALUE="6.21418" BBK_DIFF_A="-0.04587"/>
      <bbk:Obs TIME_PERIOD="2012-02-20" OBS_VALUE="6.26005" BBK_DIFF_A="-0.00325"/>
      <bbk:Obs TIME_PERIOD="2012-02-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-02-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-02-17" OBS_VALUE="6.2633" BBK_DIFF_A="0.03477"/>
      <bbk:Obs TIME_PERIOD="2012-02-16" OBS_VALUE="6.22853" BBK_DIFF_A="-0.02935"/>
      <bbk:Obs TIME_PERIOD="2012-02-15" OBS_VALUE="6.25788" BBK_DIFF_A="-0.0702"/>
      <bbk:Obs TIME_PERIOD="2012-02-14" OBS_VALUE="6.32808" BBK_DIFF_A="-0.01339"/>
      <bbk:Obs TIME_PERIOD="2012-02-13" OBS_VALUE="6.34147" BBK_DIFF_A="0.03197"/>
      <bbk:Obs TIME_PERIOD="2012-02-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-02-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-02-10" OBS_VALUE="6.3095" BBK_DIFF_A="0.02442"/>
      <bbk:Obs TIME_PERIOD="2012-02-09" OBS_VALUE="6.28508" BBK_DIFF_A="0.0901"/>
      <bbk:Obs TIME_PERIOD="2012-02-08" OBS_VALUE="6.19498" BBK_DIFF_A="-0.02935"/>
      <bbk:Obs TIME_PERIOD="2012-02-07" OBS_VALUE="6.22433" BBK_DIFF_A="-0.07088"/>
      <bbk:Obs TIME_PERIOD="2012-02-06" OBS_VALUE="6.29521" BBK_DIFF_A="-0.08456"/>
      <bbk:Obs TIME_PERIOD="2012-02-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-02-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-02-03" OBS_VALUE="6.37977" BBK_DIFF_A="0.07657"/>
      <bbk:Obs TIME_PERIOD="2012-02-02" OBS_VALUE="6.3032" BBK_DIFF_A="-0.05231"/>
      <bbk:Obs TIME_PERIOD="2012-02-01" OBS_VALUE="6.35551" BBK_DIFF_A="-0.06966"/>
      <bbk:Obs TIME_PERIOD="2012-01-31" OBS_VALUE="6.42517" BBK_DIFF_A="0.01068"/>
      <bbk:Obs TIME_PERIOD="2012-01-30" OBS_VALUE="6.41449" BBK_DIFF_A="0.0894"/>
      <bbk:Obs TIME_PERIOD="2012-01-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-01-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-01-27" OBS_VALUE="6.32509" BBK_DIFF_A="0.08797"/>
      <bbk:Obs TIME_PERIOD="2012-01-26" OBS_VALUE="6.23712" BBK_DIFF_A="0.00577"/>
      <bbk:Obs TIME_PERIOD="2012-01-25" OBS_VALUE="6.23135" BBK_DIFF_A="-0.02405"/>
      <bbk:Obs TIME_PERIOD="2012-01-24" OBS_VALUE="6.2554" BBK_DIFF_A="-0.01805"/>
      <bbk:Obs TIME_PERIOD="2012-01-23" OBS_VALUE="6.27345" BBK_DIFF_A="-0.13745"/>
      <bbk:Obs TIME_PERIOD="2012-01-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-01-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-01-20" OBS_VALUE="6.4109" BBK_DIFF_A="-0.03216"/>
      <bbk:Obs TIME_PERIOD="2012-01-19" OBS_VALUE="6.44306" BBK_DIFF_A="0.0149"/>
      <bbk:Obs TIME_PERIOD="2012-01-18" OBS_VALUE="6.42816" BBK_DIFF_A="0.18255"/>
      <bbk:Obs TIME_PERIOD="2012-01-17" OBS_VALUE="6.24561" BBK_DIFF_A="-0.00569"/>
      <bbk:Obs TIME_PERIOD="2012-01-16" OBS_VALUE="6.2513" BBK_DIFF_A="0.0268"/>
      <bbk:Obs TIME_PERIOD="2012-01-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-01-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-01-13" OBS_VALUE="6.2245" BBK_DIFF_A="-0.11013"/>
      <bbk:Obs TIME_PERIOD="2012-01-12" OBS_VALUE="6.33463" BBK_DIFF_A="-0.05957"/>
      <bbk:Obs TIME_PERIOD="2012-01-11" OBS_VALUE="6.3942" BBK_DIFF_A="0.01934"/>
      <bbk:Obs TIME_PERIOD="2012-01-10" OBS_VALUE="6.37486" BBK_DIFF_A="-0.09438"/>
      <bbk:Obs TIME_PERIOD="2012-01-09" OBS_VALUE="6.46924" BBK_DIFF_A="0.04778"/>
      <bbk:Obs TIME_PERIOD="2012-01-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-01-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2012-01-06" OBS_VALUE="6.42146" BBK_DIFF_A="0.03831"/>
      <bbk:Obs TIME_PERIOD="2012-01-05" OBS_VALUE="6.38315" BBK_DIFF_A="0.002"/>
      <bbk:Obs TIME_PERIOD="2012-01-04" OBS_VALUE="6.38115" BBK_DIFF_A="0.04248"/>
      <bbk:Obs TIME_PERIOD="2012-01-03" OBS_VALUE="6.33867" BBK_DIFF_A="-0.01383"/>
      <bbk:Obs TIME_PERIOD="2012-01-02" OBS_VALUE="6.3525" BBK_DIFF_A="0.06362"/>
      <bbk:Obs TIME_PERIOD="2012-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-12-30" OBS_VALUE="6.28888" BBK_DIFF_A="0.08496"/>
      <bbk:Obs TIME_PERIOD="2011-12-29" OBS_VALUE="6.20392" BBK_DIFF_A="0.03104"/>
      <bbk:Obs TIME_PERIOD="2011-12-28" OBS_VALUE="6.17288" BBK_DIFF_A="-0.06261"/>
      <bbk:Obs TIME_PERIOD="2011-12-27" OBS_VALUE="6.23549" BBK_DIFF_A="-0.1222"/>
      <bbk:Obs TIME_PERIOD="2011-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-12-23" OBS_VALUE="6.35769" BBK_DIFF_A="0.0268"/>
      <bbk:Obs TIME_PERIOD="2011-12-22" OBS_VALUE="6.33089" BBK_DIFF_A="0.03272"/>
      <bbk:Obs TIME_PERIOD="2011-12-21" OBS_VALUE="6.29817" BBK_DIFF_A="0.05772"/>
      <bbk:Obs TIME_PERIOD="2011-12-20" OBS_VALUE="6.24045" BBK_DIFF_A="-0.06283"/>
      <bbk:Obs TIME_PERIOD="2011-12-19" OBS_VALUE="6.30328" BBK_DIFF_A="0.05049"/>
      <bbk:Obs TIME_PERIOD="2011-12-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-12-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-12-16" OBS_VALUE="6.25279" BBK_DIFF_A="0.067"/>
      <bbk:Obs TIME_PERIOD="2011-12-15" OBS_VALUE="6.18579" BBK_DIFF_A="0.03773"/>
      <bbk:Obs TIME_PERIOD="2011-12-14" OBS_VALUE="6.14806" BBK_DIFF_A="-0.03077"/>
      <bbk:Obs TIME_PERIOD="2011-12-13" OBS_VALUE="6.17883" BBK_DIFF_A="-0.02767"/>
      <bbk:Obs TIME_PERIOD="2011-12-12" OBS_VALUE="6.2065" BBK_DIFF_A="-0.24591"/>
      <bbk:Obs TIME_PERIOD="2011-12-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-12-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-12-09" OBS_VALUE="6.45241" BBK_DIFF_A="0.08007"/>
      <bbk:Obs TIME_PERIOD="2011-12-08" OBS_VALUE="6.37234" BBK_DIFF_A="0.04103"/>
      <bbk:Obs TIME_PERIOD="2011-12-07" OBS_VALUE="6.33131" BBK_DIFF_A="0.06649"/>
      <bbk:Obs TIME_PERIOD="2011-12-06" OBS_VALUE="6.26482" BBK_DIFF_A="-0.13685"/>
      <bbk:Obs TIME_PERIOD="2011-12-05" OBS_VALUE="6.40167" BBK_DIFF_A="0.00923"/>
      <bbk:Obs TIME_PERIOD="2011-12-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-12-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-12-02" OBS_VALUE="6.39244" BBK_DIFF_A="-0.04933"/>
      <bbk:Obs TIME_PERIOD="2011-12-01" OBS_VALUE="6.44177" BBK_DIFF_A="-0.37589"/>
      <bbk:Obs TIME_PERIOD="2011-11-30" OBS_VALUE="6.81766" BBK_DIFF_A="-0.05594"/>
      <bbk:Obs TIME_PERIOD="2011-11-29" OBS_VALUE="6.8736" BBK_DIFF_A="0.21253"/>
      <bbk:Obs TIME_PERIOD="2011-11-28" OBS_VALUE="6.66107" BBK_DIFF_A="-0.31018"/>
      <bbk:Obs TIME_PERIOD="2011-11-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-11-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-11-25" OBS_VALUE="6.97125" BBK_DIFF_A="-0.00235"/>
      <bbk:Obs TIME_PERIOD="2011-11-24" OBS_VALUE="6.9736" BBK_DIFF_A="0.11141"/>
      <bbk:Obs TIME_PERIOD="2011-11-23" OBS_VALUE="6.86219" BBK_DIFF_A="-0.05821"/>
      <bbk:Obs TIME_PERIOD="2011-11-22" OBS_VALUE="6.9204" BBK_DIFF_A="0.03407"/>
      <bbk:Obs TIME_PERIOD="2011-11-21" OBS_VALUE="6.88633" BBK_DIFF_A="-0.06432"/>
      <bbk:Obs TIME_PERIOD="2011-11-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-11-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-11-18" OBS_VALUE="6.95065" BBK_DIFF_A="-0.23654"/>
      <bbk:Obs TIME_PERIOD="2011-11-17" OBS_VALUE="7.18719" BBK_DIFF_A="0.05521"/>
      <bbk:Obs TIME_PERIOD="2011-11-16" OBS_VALUE="7.13198" BBK_DIFF_A="0.06373"/>
      <bbk:Obs TIME_PERIOD="2011-11-15" OBS_VALUE="7.06825" BBK_DIFF_A="-0.09874"/>
      <bbk:Obs TIME_PERIOD="2011-11-14" OBS_VALUE="7.16699" BBK_DIFF_A="-0.12323"/>
      <bbk:Obs TIME_PERIOD="2011-11-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-11-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-11-11" OBS_VALUE="7.29022" BBK_DIFF_A="-0.06028"/>
      <bbk:Obs TIME_PERIOD="2011-11-10" OBS_VALUE="7.3505" BBK_DIFF_A="0.0357"/>
      <bbk:Obs TIME_PERIOD="2011-11-09" OBS_VALUE="7.3148" BBK_DIFF_A="-0.0077"/>
      <bbk:Obs TIME_PERIOD="2011-11-08" OBS_VALUE="7.3225" BBK_DIFF_A="0.02005"/>
      <bbk:Obs TIME_PERIOD="2011-11-07" OBS_VALUE="7.30245" BBK_DIFF_A="0.18372"/>
      <bbk:Obs TIME_PERIOD="2011-11-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-11-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-11-04" OBS_VALUE="7.11873" BBK_DIFF_A="-0.16033"/>
      <bbk:Obs TIME_PERIOD="2011-11-03" OBS_VALUE="7.27906" BBK_DIFF_A="-0.10775"/>
      <bbk:Obs TIME_PERIOD="2011-11-02" OBS_VALUE="7.38681" BBK_DIFF_A="0.16727"/>
      <bbk:Obs TIME_PERIOD="2011-11-01" OBS_VALUE="7.21954" BBK_DIFF_A="0.18031"/>
      <bbk:Obs TIME_PERIOD="2011-10-31" OBS_VALUE="7.03923" BBK_DIFF_A="-0.17077"/>
      <bbk:Obs TIME_PERIOD="2011-10-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-10-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-10-28" OBS_VALUE="7.21" BBK_DIFF_A="0.18243"/>
      <bbk:Obs TIME_PERIOD="2011-10-27" OBS_VALUE="7.02757" BBK_DIFF_A="-0.04495"/>
      <bbk:Obs TIME_PERIOD="2011-10-26" OBS_VALUE="7.07252" BBK_DIFF_A="-0.33921"/>
      <bbk:Obs TIME_PERIOD="2011-10-25" OBS_VALUE="7.41173" BBK_DIFF_A="-0.13223"/>
      <bbk:Obs TIME_PERIOD="2011-10-24" OBS_VALUE="7.54396" BBK_DIFF_A="-0.02664"/>
      <bbk:Obs TIME_PERIOD="2011-10-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-10-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-10-21" OBS_VALUE="7.5706" BBK_DIFF_A="-0.35014"/>
      <bbk:Obs TIME_PERIOD="2011-10-20" OBS_VALUE="7.92074" BBK_DIFF_A="0.48953"/>
      <bbk:Obs TIME_PERIOD="2011-10-19" OBS_VALUE="7.43121" BBK_DIFF_A="-0.08733"/>
      <bbk:Obs TIME_PERIOD="2011-10-18" OBS_VALUE="7.51854" BBK_DIFF_A="0.14917"/>
      <bbk:Obs TIME_PERIOD="2011-10-17" OBS_VALUE="7.36937" BBK_DIFF_A="-0.21281"/>
      <bbk:Obs TIME_PERIOD="2011-10-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-10-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-10-14" OBS_VALUE="7.58218" BBK_DIFF_A="-0.07262"/>
      <bbk:Obs TIME_PERIOD="2011-10-13" OBS_VALUE="7.6548" BBK_DIFF_A="-0.0556"/>
      <bbk:Obs TIME_PERIOD="2011-10-12" OBS_VALUE="7.7104" BBK_DIFF_A="0.16439"/>
      <bbk:Obs TIME_PERIOD="2011-10-11" OBS_VALUE="7.54601" BBK_DIFF_A="-0.2225"/>
      <bbk:Obs TIME_PERIOD="2011-10-10" OBS_VALUE="7.76851" BBK_DIFF_A="1.2604"/>
      <bbk:Obs TIME_PERIOD="2011-10-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-10-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-10-07" OBS_VALUE="6.50811" BBK_DIFF_A="0.06974"/>
      <bbk:Obs TIME_PERIOD="2011-10-06" OBS_VALUE="6.43837" BBK_DIFF_A="0.15563"/>
      <bbk:Obs TIME_PERIOD="2011-10-05" OBS_VALUE="6.28274" BBK_DIFF_A="-0.09485"/>
      <bbk:Obs TIME_PERIOD="2011-10-04" OBS_VALUE="6.37759" BBK_DIFF_A="-0.23695"/>
      <bbk:Obs TIME_PERIOD="2011-10-03" OBS_VALUE="6.61454" BBK_DIFF_A="-0.2526"/>
      <bbk:Obs TIME_PERIOD="2011-10-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-10-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-09-30" OBS_VALUE="6.86714" BBK_DIFF_A="0.1571"/>
      <bbk:Obs TIME_PERIOD="2011-09-29" OBS_VALUE="6.71004" BBK_DIFF_A="-0.2316"/>
      <bbk:Obs TIME_PERIOD="2011-09-28" OBS_VALUE="6.94164" BBK_DIFF_A="0.13686"/>
      <bbk:Obs TIME_PERIOD="2011-09-27" OBS_VALUE="6.80478" BBK_DIFF_A="-1.27021"/>
      <bbk:Obs TIME_PERIOD="2011-09-26" OBS_VALUE="8.07499" BBK_DIFF_A="-0.08072"/>
      <bbk:Obs TIME_PERIOD="2011-09-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-09-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-09-23" OBS_VALUE="8.15571" BBK_DIFF_A="0.04014"/>
      <bbk:Obs TIME_PERIOD="2011-09-22" OBS_VALUE="8.11557" BBK_DIFF_A="0.01442"/>
      <bbk:Obs TIME_PERIOD="2011-09-21" OBS_VALUE="8.10115" BBK_DIFF_A="-0.11781"/>
      <bbk:Obs TIME_PERIOD="2011-09-20" OBS_VALUE="8.21896" BBK_DIFF_A="0.2169"/>
      <bbk:Obs TIME_PERIOD="2011-09-19" OBS_VALUE="8.00206" BBK_DIFF_A="-0.42379"/>
      <bbk:Obs TIME_PERIOD="2011-09-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-09-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-09-16" OBS_VALUE="8.42585" BBK_DIFF_A="-0.38107"/>
      <bbk:Obs TIME_PERIOD="2011-09-15" OBS_VALUE="8.80692" BBK_DIFF_A="0.61486"/>
      <bbk:Obs TIME_PERIOD="2011-09-14" OBS_VALUE="8.19206" BBK_DIFF_A="-0.03622"/>
      <bbk:Obs TIME_PERIOD="2011-09-13" OBS_VALUE="8.22828" BBK_DIFF_A="0.08111"/>
      <bbk:Obs TIME_PERIOD="2011-09-12" OBS_VALUE="8.14717" BBK_DIFF_A="1.94686"/>
      <bbk:Obs TIME_PERIOD="2011-09-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-09-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-09-09" OBS_VALUE="6.20031" BBK_DIFF_A="-0.17486"/>
      <bbk:Obs TIME_PERIOD="2011-09-08" OBS_VALUE="6.37517" BBK_DIFF_A="-0.00281"/>
      <bbk:Obs TIME_PERIOD="2011-09-07" OBS_VALUE="6.37798" BBK_DIFF_A="6.09203"/>
      <bbk:Obs TIME_PERIOD="2011-09-06" OBS_VALUE="0.28595" BBK_DIFF_A="-0.00988"/>
      <bbk:Obs TIME_PERIOD="2011-09-05" OBS_VALUE="0.29583" BBK_DIFF_A="4.3E-4"/>
      <bbk:Obs TIME_PERIOD="2011-09-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-09-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-09-02" OBS_VALUE="0.2954" BBK_DIFF_A="-0.00628"/>
      <bbk:Obs TIME_PERIOD="2011-09-01" OBS_VALUE="0.30168" BBK_DIFF_A="-0.01147"/>
      <bbk:Obs TIME_PERIOD="2011-08-31" OBS_VALUE="0.31315" BBK_DIFF_A="-0.00129"/>
      <bbk:Obs TIME_PERIOD="2011-08-30" OBS_VALUE="0.31444" BBK_DIFF_A="0.00565"/>
      <bbk:Obs TIME_PERIOD="2011-08-29" OBS_VALUE="0.30879" BBK_DIFF_A="0.00402"/>
      <bbk:Obs TIME_PERIOD="2011-08-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-08-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-08-26" OBS_VALUE="0.30477" BBK_DIFF_A="-0.02659"/>
      <bbk:Obs TIME_PERIOD="2011-08-25" OBS_VALUE="0.33136" BBK_DIFF_A="0.01448"/>
      <bbk:Obs TIME_PERIOD="2011-08-24" OBS_VALUE="0.31688" BBK_DIFF_A="0.00139"/>
      <bbk:Obs TIME_PERIOD="2011-08-23" OBS_VALUE="0.31549" BBK_DIFF_A="-0.01118"/>
      <bbk:Obs TIME_PERIOD="2011-08-22" OBS_VALUE="0.32667" BBK_DIFF_A="0.01017"/>
      <bbk:Obs TIME_PERIOD="2011-08-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-08-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-08-19" OBS_VALUE="0.3165" BBK_DIFF_A="-0.00433"/>
      <bbk:Obs TIME_PERIOD="2011-08-18" OBS_VALUE="0.32083" BBK_DIFF_A="-0.00586"/>
      <bbk:Obs TIME_PERIOD="2011-08-17" OBS_VALUE="0.32669" BBK_DIFF_A="0.00162"/>
      <bbk:Obs TIME_PERIOD="2011-08-16" OBS_VALUE="0.32507" BBK_DIFF_A="-0.00486"/>
      <bbk:Obs TIME_PERIOD="2011-08-15" OBS_VALUE="0.32993" BBK_DIFF_A="0.0046"/>
      <bbk:Obs TIME_PERIOD="2011-08-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-08-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-08-12" OBS_VALUE="0.32533" BBK_DIFF_A="0.01991"/>
      <bbk:Obs TIME_PERIOD="2011-08-11" OBS_VALUE="0.30542" BBK_DIFF_A="0.01165"/>
      <bbk:Obs TIME_PERIOD="2011-08-10" OBS_VALUE="0.29377" BBK_DIFF_A="-0.00758"/>
      <bbk:Obs TIME_PERIOD="2011-08-09" OBS_VALUE="0.30135" BBK_DIFF_A="-0.0137"/>
      <bbk:Obs TIME_PERIOD="2011-08-08" OBS_VALUE="0.31505" BBK_DIFF_A="-0.01977"/>
      <bbk:Obs TIME_PERIOD="2011-08-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-08-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-08-05" OBS_VALUE="0.33482" BBK_DIFF_A="-0.01149"/>
      <bbk:Obs TIME_PERIOD="2011-08-04" OBS_VALUE="0.34631" BBK_DIFF_A="-0.01512"/>
      <bbk:Obs TIME_PERIOD="2011-08-03" OBS_VALUE="0.36143" BBK_DIFF_A="-6.81859"/>
      <bbk:Obs TIME_PERIOD="2011-08-02" OBS_VALUE="7.18002" BBK_DIFF_A="-0.36441"/>
      <bbk:Obs TIME_PERIOD="2011-08-01" OBS_VALUE="7.54443" BBK_DIFF_A="-0.03941"/>
      <bbk:Obs TIME_PERIOD="2011-07-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-07-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-07-29" OBS_VALUE="7.58384" BBK_DIFF_A="0.18196"/>
      <bbk:Obs TIME_PERIOD="2011-07-28" OBS_VALUE="7.40188" BBK_DIFF_A="-0.07821"/>
      <bbk:Obs TIME_PERIOD="2011-07-27" OBS_VALUE="7.48009" BBK_DIFF_A="-0.00722"/>
      <bbk:Obs TIME_PERIOD="2011-07-26" OBS_VALUE="7.48731" BBK_DIFF_A="-0.15596"/>
      <bbk:Obs TIME_PERIOD="2011-07-25" OBS_VALUE="7.64327" BBK_DIFF_A="-0.27986"/>
      <bbk:Obs TIME_PERIOD="2011-07-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-07-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-07-22" OBS_VALUE="7.92313" BBK_DIFF_A="0.27488"/>
      <bbk:Obs TIME_PERIOD="2011-07-21" OBS_VALUE="7.64825" BBK_DIFF_A="-0.08838"/>
      <bbk:Obs TIME_PERIOD="2011-07-20" OBS_VALUE="7.73663" BBK_DIFF_A="0.05478"/>
      <bbk:Obs TIME_PERIOD="2011-07-19" OBS_VALUE="7.68185" BBK_DIFF_A="-1.42022"/>
      <bbk:Obs TIME_PERIOD="2011-07-18" OBS_VALUE="9.10207" BBK_DIFF_A="1.543"/>
      <bbk:Obs TIME_PERIOD="2011-07-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-07-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-07-15" OBS_VALUE="7.55907" BBK_DIFF_A="0.23746"/>
      <bbk:Obs TIME_PERIOD="2011-07-14" OBS_VALUE="7.32161" BBK_DIFF_A="-2.24593"/>
      <bbk:Obs TIME_PERIOD="2011-07-13" OBS_VALUE="9.56754" BBK_DIFF_A="2.30234"/>
      <bbk:Obs TIME_PERIOD="2011-07-12" OBS_VALUE="7.2652" BBK_DIFF_A="-0.2908"/>
      <bbk:Obs TIME_PERIOD="2011-07-11" OBS_VALUE="7.556" BBK_DIFF_A="-0.42782"/>
      <bbk:Obs TIME_PERIOD="2011-07-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-07-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-07-08" OBS_VALUE="7.98382" BBK_DIFF_A="-0.1433"/>
      <bbk:Obs TIME_PERIOD="2011-07-07" OBS_VALUE="8.12712" BBK_DIFF_A="0.01323"/>
      <bbk:Obs TIME_PERIOD="2011-07-06" OBS_VALUE="8.11389" BBK_DIFF_A="-0.53391"/>
      <bbk:Obs TIME_PERIOD="2011-07-05" OBS_VALUE="8.6478" BBK_DIFF_A="-0.16117"/>
      <bbk:Obs TIME_PERIOD="2011-07-04" OBS_VALUE="8.80897" BBK_DIFF_A="0.15085"/>
      <bbk:Obs TIME_PERIOD="2011-07-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-07-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-07-01" OBS_VALUE="8.65812" BBK_DIFF_A="1.70029"/>
      <bbk:Obs TIME_PERIOD="2011-06-30" OBS_VALUE="6.95783" BBK_DIFF_A="0.67321"/>
      <bbk:Obs TIME_PERIOD="2011-06-29" OBS_VALUE="6.28462" BBK_DIFF_A="0.52632"/>
      <bbk:Obs TIME_PERIOD="2011-06-28" OBS_VALUE="5.7583" BBK_DIFF_A="-0.15284"/>
      <bbk:Obs TIME_PERIOD="2011-06-27" OBS_VALUE="5.91114" BBK_DIFF_A="0.18907"/>
      <bbk:Obs TIME_PERIOD="2011-06-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-06-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-06-24" OBS_VALUE="5.72207" BBK_DIFF_A="-0.42309"/>
      <bbk:Obs TIME_PERIOD="2011-06-23" OBS_VALUE="6.14516" BBK_DIFF_A="-0.133"/>
      <bbk:Obs TIME_PERIOD="2011-06-22" OBS_VALUE="6.27816" BBK_DIFF_A="0.17795"/>
      <bbk:Obs TIME_PERIOD="2011-06-21" OBS_VALUE="6.10021" BBK_DIFF_A="0.07572"/>
      <bbk:Obs TIME_PERIOD="2011-06-20" OBS_VALUE="6.02449" BBK_DIFF_A="0.05619"/>
      <bbk:Obs TIME_PERIOD="2011-06-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-06-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-06-17" OBS_VALUE="5.9683" BBK_DIFF_A="0.32463"/>
      <bbk:Obs TIME_PERIOD="2011-06-16" OBS_VALUE="5.64367" BBK_DIFF_A="-0.59196"/>
      <bbk:Obs TIME_PERIOD="2011-06-15" OBS_VALUE="6.23563" BBK_DIFF_A="0.01424"/>
      <bbk:Obs TIME_PERIOD="2011-06-14" OBS_VALUE="6.22139" BBK_DIFF_A="0.05993"/>
      <bbk:Obs TIME_PERIOD="2011-06-13" OBS_VALUE="6.16146" BBK_DIFF_A="5.84424"/>
      <bbk:Obs TIME_PERIOD="2011-06-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-06-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-06-10" OBS_VALUE="0.31722" BBK_DIFF_A="-0.04579"/>
      <bbk:Obs TIME_PERIOD="2011-06-09" OBS_VALUE="0.36301" BBK_DIFF_A="-0.03862"/>
      <bbk:Obs TIME_PERIOD="2011-06-08" OBS_VALUE="0.40163" BBK_DIFF_A="-0.01486"/>
      <bbk:Obs TIME_PERIOD="2011-06-07" OBS_VALUE="0.41649" BBK_DIFF_A="-0.046"/>
      <bbk:Obs TIME_PERIOD="2011-06-06" OBS_VALUE="0.46249" BBK_DIFF_A="0.01441"/>
      <bbk:Obs TIME_PERIOD="2011-06-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-06-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-06-03" OBS_VALUE="0.44808" BBK_DIFF_A="0.03484"/>
      <bbk:Obs TIME_PERIOD="2011-06-02" OBS_VALUE="0.41324" BBK_DIFF_A="2.1E-4"/>
      <bbk:Obs TIME_PERIOD="2011-06-01" OBS_VALUE="0.41303" BBK_DIFF_A="-0.01736"/>
      <bbk:Obs TIME_PERIOD="2011-05-31" OBS_VALUE="0.43039" BBK_DIFF_A="0.04706"/>
      <bbk:Obs TIME_PERIOD="2011-05-30" OBS_VALUE="0.38333" BBK_DIFF_A="-0.01115"/>
      <bbk:Obs TIME_PERIOD="2011-05-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-05-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-05-27" OBS_VALUE="0.39448" BBK_DIFF_A="-0.09173"/>
      <bbk:Obs TIME_PERIOD="2011-05-26" OBS_VALUE="0.48621" BBK_DIFF_A="0.02862"/>
      <bbk:Obs TIME_PERIOD="2011-05-25" OBS_VALUE="0.45759" BBK_DIFF_A="-0.10398"/>
      <bbk:Obs TIME_PERIOD="2011-05-24" OBS_VALUE="0.56157" BBK_DIFF_A="-6.8E-4"/>
      <bbk:Obs TIME_PERIOD="2011-05-23" OBS_VALUE="0.56225" BBK_DIFF_A="-0.18051"/>
      <bbk:Obs TIME_PERIOD="2011-05-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-05-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-05-20" OBS_VALUE="0.74276" BBK_DIFF_A="-0.03837"/>
      <bbk:Obs TIME_PERIOD="2011-05-19" OBS_VALUE="0.78113" BBK_DIFF_A="0.03631"/>
      <bbk:Obs TIME_PERIOD="2011-05-18" OBS_VALUE="0.74482" BBK_DIFF_A="-0.05148"/>
      <bbk:Obs TIME_PERIOD="2011-05-17" OBS_VALUE="0.7963" BBK_DIFF_A="0.11533"/>
      <bbk:Obs TIME_PERIOD="2011-05-16" OBS_VALUE="0.68097" BBK_DIFF_A="-0.03397"/>
      <bbk:Obs TIME_PERIOD="2011-05-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-05-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-05-13" OBS_VALUE="0.71494" BBK_DIFF_A="0.00437"/>
      <bbk:Obs TIME_PERIOD="2011-05-12" OBS_VALUE="0.71057" BBK_DIFF_A="-0.17477"/>
      <bbk:Obs TIME_PERIOD="2011-05-11" OBS_VALUE="0.88534" BBK_DIFF_A="0.03779"/>
      <bbk:Obs TIME_PERIOD="2011-05-10" OBS_VALUE="0.84755" BBK_DIFF_A="-0.05252"/>
      <bbk:Obs TIME_PERIOD="2011-05-09" OBS_VALUE="0.90007" BBK_DIFF_A="-0.21074"/>
      <bbk:Obs TIME_PERIOD="2011-05-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-05-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-05-06" OBS_VALUE="1.11081" BBK_DIFF_A="0.96029"/>
      <bbk:Obs TIME_PERIOD="2011-05-05" OBS_VALUE="0.15052" BBK_DIFF_A="-0.03428"/>
      <bbk:Obs TIME_PERIOD="2011-05-04" OBS_VALUE="0.1848" BBK_DIFF_A="0.02394"/>
      <bbk:Obs TIME_PERIOD="2011-05-03" OBS_VALUE="0.16086" BBK_DIFF_A="-0.01342"/>
      <bbk:Obs TIME_PERIOD="2011-05-02" OBS_VALUE="0.17428" BBK_DIFF_A="0.00437"/>
      <bbk:Obs TIME_PERIOD="2011-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-04-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-04-29" OBS_VALUE="0.16991" BBK_DIFF_A="-0.00343"/>
      <bbk:Obs TIME_PERIOD="2011-04-28" OBS_VALUE="0.17334" BBK_DIFF_A="0.01173"/>
      <bbk:Obs TIME_PERIOD="2011-04-27" OBS_VALUE="0.16161" BBK_DIFF_A="0.01063"/>
      <bbk:Obs TIME_PERIOD="2011-04-26" OBS_VALUE="0.15098" BBK_DIFF_A="-0.00919"/>
      <bbk:Obs TIME_PERIOD="2011-04-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-04-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-04-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-04-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-04-21" OBS_VALUE="0.16017" BBK_DIFF_A="0.00969"/>
      <bbk:Obs TIME_PERIOD="2011-04-20" OBS_VALUE="0.15048" BBK_DIFF_A="0.01408"/>
      <bbk:Obs TIME_PERIOD="2011-04-19" OBS_VALUE="0.1364" BBK_DIFF_A="0.00565"/>
      <bbk:Obs TIME_PERIOD="2011-04-18" OBS_VALUE="0.13075" BBK_DIFF_A="-0.02015"/>
      <bbk:Obs TIME_PERIOD="2011-04-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-04-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-04-15" OBS_VALUE="0.1509" BBK_DIFF_A="0.02049"/>
      <bbk:Obs TIME_PERIOD="2011-04-14" OBS_VALUE="0.13041" BBK_DIFF_A="-0.0249"/>
      <bbk:Obs TIME_PERIOD="2011-04-13" OBS_VALUE="0.15531" BBK_DIFF_A="-0.01415"/>
      <bbk:Obs TIME_PERIOD="2011-04-12" OBS_VALUE="0.16946" BBK_DIFF_A="-0.00593"/>
      <bbk:Obs TIME_PERIOD="2011-04-11" OBS_VALUE="0.17539" BBK_DIFF_A="0.00645"/>
      <bbk:Obs TIME_PERIOD="2011-04-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-04-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-04-08" OBS_VALUE="0.16894" BBK_DIFF_A="0.01513"/>
      <bbk:Obs TIME_PERIOD="2011-04-07" OBS_VALUE="0.15381" BBK_DIFF_A="-0.00493"/>
      <bbk:Obs TIME_PERIOD="2011-04-06" OBS_VALUE="0.15874" BBK_DIFF_A="0.00777"/>
      <bbk:Obs TIME_PERIOD="2011-04-05" OBS_VALUE="0.15097" BBK_DIFF_A="-3.6E-4"/>
      <bbk:Obs TIME_PERIOD="2011-04-04" OBS_VALUE="0.15133" BBK_DIFF_A="-0.00607"/>
      <bbk:Obs TIME_PERIOD="2011-04-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-04-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-04-01" OBS_VALUE="0.1574" BBK_DIFF_A="-0.00126"/>
      <bbk:Obs TIME_PERIOD="2011-03-31" OBS_VALUE="0.15866" BBK_DIFF_A="-0.02227"/>
      <bbk:Obs TIME_PERIOD="2011-03-30" OBS_VALUE="0.18093" BBK_DIFF_A="0.00446"/>
      <bbk:Obs TIME_PERIOD="2011-03-29" OBS_VALUE="0.17647" BBK_DIFF_A="0.00927"/>
      <bbk:Obs TIME_PERIOD="2011-03-28" OBS_VALUE="0.1672" BBK_DIFF_A="-0.01064"/>
      <bbk:Obs TIME_PERIOD="2011-03-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-03-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-03-25" OBS_VALUE="0.17784" BBK_DIFF_A="0.01821"/>
      <bbk:Obs TIME_PERIOD="2011-03-24" OBS_VALUE="0.15963" BBK_DIFF_A="-0.00172"/>
      <bbk:Obs TIME_PERIOD="2011-03-23" OBS_VALUE="0.16135" BBK_DIFF_A="-0.81591"/>
      <bbk:Obs TIME_PERIOD="2011-03-22" OBS_VALUE="0.97726" BBK_DIFF_A="0.13749"/>
      <bbk:Obs TIME_PERIOD="2011-03-21" OBS_VALUE="0.83977" BBK_DIFF_A="0.17302"/>
      <bbk:Obs TIME_PERIOD="2011-03-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-03-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-03-18" OBS_VALUE="0.66675" BBK_DIFF_A="0.10101"/>
      <bbk:Obs TIME_PERIOD="2011-03-17" OBS_VALUE="0.56574" BBK_DIFF_A="0.0244"/>
      <bbk:Obs TIME_PERIOD="2011-03-16" OBS_VALUE="0.54134" BBK_DIFF_A="0.47469"/>
      <bbk:Obs TIME_PERIOD="2011-03-15" OBS_VALUE="0.06665" BBK_DIFF_A="-0.09717"/>
      <bbk:Obs TIME_PERIOD="2011-03-14" OBS_VALUE="0.16382" BBK_DIFF_A="0.0381"/>
      <bbk:Obs TIME_PERIOD="2011-03-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-03-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-03-11" OBS_VALUE="0.12572" BBK_DIFF_A="-0.00626"/>
      <bbk:Obs TIME_PERIOD="2011-03-10" OBS_VALUE="0.13198" BBK_DIFF_A="-0.0129"/>
      <bbk:Obs TIME_PERIOD="2011-03-09" OBS_VALUE="0.14488" BBK_DIFF_A="0.01075"/>
      <bbk:Obs TIME_PERIOD="2011-03-08" OBS_VALUE="0.13413" BBK_DIFF_A="0.00601"/>
      <bbk:Obs TIME_PERIOD="2011-03-07" OBS_VALUE="0.12812" BBK_DIFF_A="-8.49066"/>
      <bbk:Obs TIME_PERIOD="2011-03-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-03-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-03-04" OBS_VALUE="8.61878" BBK_DIFF_A="-0.40205"/>
      <bbk:Obs TIME_PERIOD="2011-03-03" OBS_VALUE="9.02083" BBK_DIFF_A="0.64649"/>
      <bbk:Obs TIME_PERIOD="2011-03-02" OBS_VALUE="8.37434" BBK_DIFF_A="0.08143"/>
      <bbk:Obs TIME_PERIOD="2011-03-01" OBS_VALUE="8.29291" BBK_DIFF_A="0.34089"/>
      <bbk:Obs TIME_PERIOD="2011-02-28" OBS_VALUE="7.95202" BBK_DIFF_A="-0.0724"/>
      <bbk:Obs TIME_PERIOD="2011-02-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-02-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-02-25" OBS_VALUE="8.02442" BBK_DIFF_A="-0.34966"/>
      <bbk:Obs TIME_PERIOD="2011-02-24" OBS_VALUE="8.37408" BBK_DIFF_A="0.1006"/>
      <bbk:Obs TIME_PERIOD="2011-02-23" OBS_VALUE="8.27348" BBK_DIFF_A="0.55431"/>
      <bbk:Obs TIME_PERIOD="2011-02-22" OBS_VALUE="7.71917" BBK_DIFF_A="-0.05697"/>
      <bbk:Obs TIME_PERIOD="2011-02-21" OBS_VALUE="7.77614" BBK_DIFF_A="0.39697"/>
      <bbk:Obs TIME_PERIOD="2011-02-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-02-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-02-18" OBS_VALUE="7.37917" BBK_DIFF_A="-0.2246"/>
      <bbk:Obs TIME_PERIOD="2011-02-17" OBS_VALUE="7.60377" BBK_DIFF_A="0.18075"/>
      <bbk:Obs TIME_PERIOD="2011-02-16" OBS_VALUE="7.42302" BBK_DIFF_A="-0.24502"/>
      <bbk:Obs TIME_PERIOD="2011-02-15" OBS_VALUE="7.66804" BBK_DIFF_A="0.07201"/>
      <bbk:Obs TIME_PERIOD="2011-02-14" OBS_VALUE="7.59603" BBK_DIFF_A="-0.07126"/>
      <bbk:Obs TIME_PERIOD="2011-02-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-02-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-02-11" OBS_VALUE="7.66729" BBK_DIFF_A="-0.11372"/>
      <bbk:Obs TIME_PERIOD="2011-02-10" OBS_VALUE="7.78101" BBK_DIFF_A="-0.51537"/>
      <bbk:Obs TIME_PERIOD="2011-02-09" OBS_VALUE="8.29638" BBK_DIFF_A="-1.75535"/>
      <bbk:Obs TIME_PERIOD="2011-02-08" OBS_VALUE="10.05173" BBK_DIFF_A="1.19042"/>
      <bbk:Obs TIME_PERIOD="2011-02-07" OBS_VALUE="8.86131" BBK_DIFF_A="-0.60829"/>
      <bbk:Obs TIME_PERIOD="2011-02-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-02-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-02-04" OBS_VALUE="9.4696" BBK_DIFF_A="1.70641"/>
      <bbk:Obs TIME_PERIOD="2011-02-03" OBS_VALUE="7.76319" BBK_DIFF_A="-2.30812"/>
      <bbk:Obs TIME_PERIOD="2011-02-02" OBS_VALUE="10.07131" BBK_DIFF_A="0.02268"/>
      <bbk:Obs TIME_PERIOD="2011-02-01" OBS_VALUE="10.04863" BBK_DIFF_A="-0.26289"/>
      <bbk:Obs TIME_PERIOD="2011-01-31" OBS_VALUE="10.31152" BBK_DIFF_A="0.31012"/>
      <bbk:Obs TIME_PERIOD="2011-01-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-01-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-01-28" OBS_VALUE="10.0014" BBK_DIFF_A="-0.21769"/>
      <bbk:Obs TIME_PERIOD="2011-01-27" OBS_VALUE="10.21909" BBK_DIFF_A="8.83723"/>
      <bbk:Obs TIME_PERIOD="2011-01-26" OBS_VALUE="1.38186" BBK_DIFF_A="-0.22449"/>
      <bbk:Obs TIME_PERIOD="2011-01-25" OBS_VALUE="1.60635" BBK_DIFF_A="-0.01473"/>
      <bbk:Obs TIME_PERIOD="2011-01-24" OBS_VALUE="1.62108" BBK_DIFF_A="-0.27752"/>
      <bbk:Obs TIME_PERIOD="2011-01-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-01-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-01-21" OBS_VALUE="1.8986" BBK_DIFF_A="-0.21349"/>
      <bbk:Obs TIME_PERIOD="2011-01-20" OBS_VALUE="2.11209" BBK_DIFF_A="0.19493"/>
      <bbk:Obs TIME_PERIOD="2011-01-19" OBS_VALUE="1.91716" BBK_DIFF_A="0.12172"/>
      <bbk:Obs TIME_PERIOD="2011-01-18" OBS_VALUE="1.79544" BBK_DIFF_A="0.00841"/>
      <bbk:Obs TIME_PERIOD="2011-01-17" OBS_VALUE="1.78703" BBK_DIFF_A="-0.08406"/>
      <bbk:Obs TIME_PERIOD="2011-01-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-01-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-01-14" OBS_VALUE="1.87109" BBK_DIFF_A="0.0961"/>
      <bbk:Obs TIME_PERIOD="2011-01-13" OBS_VALUE="1.77499" BBK_DIFF_A="0.07546"/>
      <bbk:Obs TIME_PERIOD="2011-01-12" OBS_VALUE="1.69953" BBK_DIFF_A="-0.0954"/>
      <bbk:Obs TIME_PERIOD="2011-01-11" OBS_VALUE="1.79493" BBK_DIFF_A="-7.79516"/>
      <bbk:Obs TIME_PERIOD="2011-01-10" OBS_VALUE="9.59009" BBK_DIFF_A="0.2561"/>
      <bbk:Obs TIME_PERIOD="2011-01-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-01-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-01-07" OBS_VALUE="9.33399" BBK_DIFF_A="-0.11959"/>
      <bbk:Obs TIME_PERIOD="2011-01-06" OBS_VALUE="9.45358" BBK_DIFF_A="0.06372"/>
      <bbk:Obs TIME_PERIOD="2011-01-05" OBS_VALUE="9.38986" BBK_DIFF_A="1.31343"/>
      <bbk:Obs TIME_PERIOD="2011-01-04" OBS_VALUE="8.07643" BBK_DIFF_A="-1.24941"/>
      <bbk:Obs TIME_PERIOD="2011-01-03" OBS_VALUE="9.32584" BBK_DIFF_A="0.56863"/>
      <bbk:Obs TIME_PERIOD="2011-01-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2011-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-12-30" OBS_VALUE="8.75721" BBK_DIFF_A="0.42614"/>
      <bbk:Obs TIME_PERIOD="2010-12-29" OBS_VALUE="8.33107" BBK_DIFF_A="-0.50506"/>
      <bbk:Obs TIME_PERIOD="2010-12-28" OBS_VALUE="8.83613" BBK_DIFF_A="-0.22541"/>
      <bbk:Obs TIME_PERIOD="2010-12-27" OBS_VALUE="9.06154" BBK_DIFF_A="-0.09298"/>
      <bbk:Obs TIME_PERIOD="2010-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-12-23" OBS_VALUE="9.15452" BBK_DIFF_A="-0.15972"/>
      <bbk:Obs TIME_PERIOD="2010-12-22" OBS_VALUE="9.31424" BBK_DIFF_A="-0.12564"/>
      <bbk:Obs TIME_PERIOD="2010-12-21" OBS_VALUE="9.43988" BBK_DIFF_A="-0.20715"/>
      <bbk:Obs TIME_PERIOD="2010-12-20" OBS_VALUE="9.64703" BBK_DIFF_A="0.34756"/>
      <bbk:Obs TIME_PERIOD="2010-12-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-12-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-12-17" OBS_VALUE="9.29947" BBK_DIFF_A="-0.18959"/>
      <bbk:Obs TIME_PERIOD="2010-12-16" OBS_VALUE="9.48906" BBK_DIFF_A="-0.11455"/>
      <bbk:Obs TIME_PERIOD="2010-12-15" OBS_VALUE="9.60361" BBK_DIFF_A="0.47154"/>
      <bbk:Obs TIME_PERIOD="2010-12-14" OBS_VALUE="9.13207" BBK_DIFF_A="0.8988"/>
      <bbk:Obs TIME_PERIOD="2010-12-13" OBS_VALUE="8.23327" BBK_DIFF_A="0.0936"/>
      <bbk:Obs TIME_PERIOD="2010-12-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-12-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-12-10" OBS_VALUE="8.13967" BBK_DIFF_A="-0.07581"/>
      <bbk:Obs TIME_PERIOD="2010-12-09" OBS_VALUE="8.21548" BBK_DIFF_A="-0.25875"/>
      <bbk:Obs TIME_PERIOD="2010-12-08" OBS_VALUE="8.47423" BBK_DIFF_A="1.39099"/>
      <bbk:Obs TIME_PERIOD="2010-12-07" OBS_VALUE="7.08324" BBK_DIFF_A="0.23906"/>
      <bbk:Obs TIME_PERIOD="2010-12-06" OBS_VALUE="6.84418" BBK_DIFF_A="-0.9833"/>
      <bbk:Obs TIME_PERIOD="2010-12-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-12-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-12-03" OBS_VALUE="7.82748" BBK_DIFF_A="5.86225"/>
      <bbk:Obs TIME_PERIOD="2010-12-02" OBS_VALUE="1.96523" BBK_DIFF_A="-0.17983"/>
      <bbk:Obs TIME_PERIOD="2010-12-01" OBS_VALUE="2.14506" BBK_DIFF_A="-0.14455"/>
      <bbk:Obs TIME_PERIOD="2010-11-30" OBS_VALUE="2.28961" BBK_DIFF_A="0.06779"/>
      <bbk:Obs TIME_PERIOD="2010-11-29" OBS_VALUE="2.22182" BBK_DIFF_A="0.12803"/>
      <bbk:Obs TIME_PERIOD="2010-11-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-11-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-11-26" OBS_VALUE="2.09379" BBK_DIFF_A="-0.178"/>
      <bbk:Obs TIME_PERIOD="2010-11-25" OBS_VALUE="2.27179" BBK_DIFF_A="0.17162"/>
      <bbk:Obs TIME_PERIOD="2010-11-24" OBS_VALUE="2.10017" BBK_DIFF_A="-0.12435"/>
      <bbk:Obs TIME_PERIOD="2010-11-23" OBS_VALUE="2.22452" BBK_DIFF_A="-0.37722"/>
      <bbk:Obs TIME_PERIOD="2010-11-22" OBS_VALUE="2.60174" BBK_DIFF_A="0.01521"/>
      <bbk:Obs TIME_PERIOD="2010-11-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-11-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-11-19" OBS_VALUE="2.58653" BBK_DIFF_A="0.08917"/>
      <bbk:Obs TIME_PERIOD="2010-11-18" OBS_VALUE="2.49736" BBK_DIFF_A="-0.44822"/>
      <bbk:Obs TIME_PERIOD="2010-11-17" OBS_VALUE="2.94558" BBK_DIFF_A="-0.6238"/>
      <bbk:Obs TIME_PERIOD="2010-11-16" OBS_VALUE="3.56938" BBK_DIFF_A="0.1734"/>
      <bbk:Obs TIME_PERIOD="2010-11-15" OBS_VALUE="3.39598" BBK_DIFF_A="0.28902"/>
      <bbk:Obs TIME_PERIOD="2010-11-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-11-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-11-12" OBS_VALUE="3.10696" BBK_DIFF_A="-0.43972"/>
      <bbk:Obs TIME_PERIOD="2010-11-11" OBS_VALUE="3.54668" BBK_DIFF_A="0.22874"/>
      <bbk:Obs TIME_PERIOD="2010-11-10" OBS_VALUE="3.31794" BBK_DIFF_A="-0.1876"/>
      <bbk:Obs TIME_PERIOD="2010-11-09" OBS_VALUE="3.50554" BBK_DIFF_A="0.61589"/>
      <bbk:Obs TIME_PERIOD="2010-11-08" OBS_VALUE="2.88965" BBK_DIFF_A="0.03795"/>
      <bbk:Obs TIME_PERIOD="2010-11-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-11-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-11-05" OBS_VALUE="2.8517" BBK_DIFF_A="0.27708"/>
      <bbk:Obs TIME_PERIOD="2010-11-04" OBS_VALUE="2.57462" BBK_DIFF_A="0.20514"/>
      <bbk:Obs TIME_PERIOD="2010-11-03" OBS_VALUE="2.36948" BBK_DIFF_A="0.2233"/>
      <bbk:Obs TIME_PERIOD="2010-11-02" OBS_VALUE="2.14618" BBK_DIFF_A="0.0047"/>
      <bbk:Obs TIME_PERIOD="2010-11-01" OBS_VALUE="2.14148" BBK_DIFF_A="-7.94651"/>
      <bbk:Obs TIME_PERIOD="2010-10-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-10-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-10-29" OBS_VALUE="10.08799" BBK_DIFF_A="0.16247"/>
      <bbk:Obs TIME_PERIOD="2010-10-28" OBS_VALUE="9.92552" BBK_DIFF_A="0.37289"/>
      <bbk:Obs TIME_PERIOD="2010-10-27" OBS_VALUE="9.55263" BBK_DIFF_A="-0.21787"/>
      <bbk:Obs TIME_PERIOD="2010-10-26" OBS_VALUE="9.7705" BBK_DIFF_A="-0.27394"/>
      <bbk:Obs TIME_PERIOD="2010-10-25" OBS_VALUE="10.04444" BBK_DIFF_A="-0.04749"/>
      <bbk:Obs TIME_PERIOD="2010-10-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-10-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-10-22" OBS_VALUE="10.09193" BBK_DIFF_A="0.00726"/>
      <bbk:Obs TIME_PERIOD="2010-10-21" OBS_VALUE="10.08467" BBK_DIFF_A="0.19531"/>
      <bbk:Obs TIME_PERIOD="2010-10-20" OBS_VALUE="9.88936" BBK_DIFF_A="-0.49265"/>
      <bbk:Obs TIME_PERIOD="2010-10-19" OBS_VALUE="10.38201" BBK_DIFF_A="0.48583"/>
      <bbk:Obs TIME_PERIOD="2010-10-18" OBS_VALUE="9.89618" BBK_DIFF_A="-0.39285"/>
      <bbk:Obs TIME_PERIOD="2010-10-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-10-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-10-15" OBS_VALUE="10.28903" BBK_DIFF_A="-0.19219"/>
      <bbk:Obs TIME_PERIOD="2010-10-14" OBS_VALUE="10.48122" BBK_DIFF_A="0.16617"/>
      <bbk:Obs TIME_PERIOD="2010-10-13" OBS_VALUE="10.31505" BBK_DIFF_A="-0.11516"/>
      <bbk:Obs TIME_PERIOD="2010-10-12" OBS_VALUE="10.43021" BBK_DIFF_A="-0.30169"/>
      <bbk:Obs TIME_PERIOD="2010-10-11" OBS_VALUE="10.7319" BBK_DIFF_A="-0.01377"/>
      <bbk:Obs TIME_PERIOD="2010-10-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-10-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-10-08" OBS_VALUE="10.74567" BBK_DIFF_A="-0.10473"/>
      <bbk:Obs TIME_PERIOD="2010-10-07" OBS_VALUE="10.8504" BBK_DIFF_A="-0.16854"/>
      <bbk:Obs TIME_PERIOD="2010-10-06" OBS_VALUE="11.01894" BBK_DIFF_A="-0.01766"/>
      <bbk:Obs TIME_PERIOD="2010-10-05" OBS_VALUE="11.0366" BBK_DIFF_A="0.06755"/>
      <bbk:Obs TIME_PERIOD="2010-10-04" OBS_VALUE="10.96905" BBK_DIFF_A="-0.11597"/>
      <bbk:Obs TIME_PERIOD="2010-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-10-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-10-01" OBS_VALUE="11.08502" BBK_DIFF_A="0.45489"/>
      <bbk:Obs TIME_PERIOD="2010-09-30" OBS_VALUE="10.63013" BBK_DIFF_A="0.152"/>
      <bbk:Obs TIME_PERIOD="2010-09-29" OBS_VALUE="10.47813" BBK_DIFF_A="-0.47245"/>
      <bbk:Obs TIME_PERIOD="2010-09-28" OBS_VALUE="10.95058" BBK_DIFF_A="0.49406"/>
      <bbk:Obs TIME_PERIOD="2010-09-27" OBS_VALUE="10.45652" BBK_DIFF_A="0.07451"/>
      <bbk:Obs TIME_PERIOD="2010-09-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-09-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-09-24" OBS_VALUE="10.38201" BBK_DIFF_A="-0.05559"/>
      <bbk:Obs TIME_PERIOD="2010-09-23" OBS_VALUE="10.4376" BBK_DIFF_A="0.99281"/>
      <bbk:Obs TIME_PERIOD="2010-09-22" OBS_VALUE="9.44479" BBK_DIFF_A="-0.17088"/>
      <bbk:Obs TIME_PERIOD="2010-09-21" OBS_VALUE="9.61567" BBK_DIFF_A="-0.87188"/>
      <bbk:Obs TIME_PERIOD="2010-09-20" OBS_VALUE="10.48755" BBK_DIFF_A="-0.37706"/>
      <bbk:Obs TIME_PERIOD="2010-09-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-09-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-09-17" OBS_VALUE="10.86461" BBK_DIFF_A="-0.22338"/>
      <bbk:Obs TIME_PERIOD="2010-09-16" OBS_VALUE="11.08799" BBK_DIFF_A="1.21972"/>
      <bbk:Obs TIME_PERIOD="2010-09-15" OBS_VALUE="9.86827" BBK_DIFF_A="1.41523"/>
      <bbk:Obs TIME_PERIOD="2010-09-14" OBS_VALUE="8.45304" BBK_DIFF_A="6.07688"/>
      <bbk:Obs TIME_PERIOD="2010-09-13" OBS_VALUE="2.37616" BBK_DIFF_A="-0.20501"/>
      <bbk:Obs TIME_PERIOD="2010-09-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-09-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-09-10" OBS_VALUE="2.58117" BBK_DIFF_A="0.55271"/>
      <bbk:Obs TIME_PERIOD="2010-09-09" OBS_VALUE="2.02846" BBK_DIFF_A="-0.29876"/>
      <bbk:Obs TIME_PERIOD="2010-09-08" OBS_VALUE="2.32722" BBK_DIFF_A="-0.17054"/>
      <bbk:Obs TIME_PERIOD="2010-09-07" OBS_VALUE="2.49776" BBK_DIFF_A="0.21026"/>
      <bbk:Obs TIME_PERIOD="2010-09-06" OBS_VALUE="2.2875" BBK_DIFF_A="0.11082"/>
      <bbk:Obs TIME_PERIOD="2010-09-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-09-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-09-03" OBS_VALUE="2.17668" BBK_DIFF_A="0.24577"/>
      <bbk:Obs TIME_PERIOD="2010-09-02" OBS_VALUE="1.93091" BBK_DIFF_A="-0.36331"/>
      <bbk:Obs TIME_PERIOD="2010-09-01" OBS_VALUE="2.29422" BBK_DIFF_A="0.08306"/>
      <bbk:Obs TIME_PERIOD="2010-08-31" OBS_VALUE="2.21116" BBK_DIFF_A="-0.39769"/>
      <bbk:Obs TIME_PERIOD="2010-08-30" OBS_VALUE="2.60885" BBK_DIFF_A="0.11598"/>
      <bbk:Obs TIME_PERIOD="2010-08-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-08-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-08-27" OBS_VALUE="2.49287" BBK_DIFF_A="0.16534"/>
      <bbk:Obs TIME_PERIOD="2010-08-26" OBS_VALUE="2.32753" BBK_DIFF_A="0.43256"/>
      <bbk:Obs TIME_PERIOD="2010-08-25" OBS_VALUE="1.89497" BBK_DIFF_A="-0.16656"/>
      <bbk:Obs TIME_PERIOD="2010-08-24" OBS_VALUE="2.06153" BBK_DIFF_A="0.00486"/>
      <bbk:Obs TIME_PERIOD="2010-08-23" OBS_VALUE="2.05667" BBK_DIFF_A="-0.16567"/>
      <bbk:Obs TIME_PERIOD="2010-08-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-08-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-08-20" OBS_VALUE="2.22234" BBK_DIFF_A="-0.2125"/>
      <bbk:Obs TIME_PERIOD="2010-08-19" OBS_VALUE="2.43484" BBK_DIFF_A="-0.11192"/>
      <bbk:Obs TIME_PERIOD="2010-08-18" OBS_VALUE="2.54676" BBK_DIFF_A="0.28353"/>
      <bbk:Obs TIME_PERIOD="2010-08-17" OBS_VALUE="2.26323" BBK_DIFF_A="0.08218"/>
      <bbk:Obs TIME_PERIOD="2010-08-16" OBS_VALUE="2.18105" BBK_DIFF_A="-0.21687"/>
      <bbk:Obs TIME_PERIOD="2010-08-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-08-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-08-13" OBS_VALUE="2.39792" BBK_DIFF_A="0.01736"/>
      <bbk:Obs TIME_PERIOD="2010-08-12" OBS_VALUE="2.38056" BBK_DIFF_A="-0.43932"/>
      <bbk:Obs TIME_PERIOD="2010-08-11" OBS_VALUE="2.81988" BBK_DIFF_A="0.28791"/>
      <bbk:Obs TIME_PERIOD="2010-08-10" OBS_VALUE="2.53197" BBK_DIFF_A="0.00897"/>
      <bbk:Obs TIME_PERIOD="2010-08-09" OBS_VALUE="2.523" BBK_DIFF_A="-0.28459"/>
      <bbk:Obs TIME_PERIOD="2010-08-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-08-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-08-06" OBS_VALUE="2.80759" BBK_DIFF_A="-0.09992"/>
      <bbk:Obs TIME_PERIOD="2010-08-05" OBS_VALUE="2.90751" BBK_DIFF_A="0.38349"/>
      <bbk:Obs TIME_PERIOD="2010-08-04" OBS_VALUE="2.52402" BBK_DIFF_A="0.21372"/>
      <bbk:Obs TIME_PERIOD="2010-08-03" OBS_VALUE="2.3103" BBK_DIFF_A="-0.09747"/>
      <bbk:Obs TIME_PERIOD="2010-08-02" OBS_VALUE="2.40777" BBK_DIFF_A="0.19946"/>
      <bbk:Obs TIME_PERIOD="2010-08-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-07-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-07-30" OBS_VALUE="2.20831" BBK_DIFF_A="-0.22255"/>
      <bbk:Obs TIME_PERIOD="2010-07-29" OBS_VALUE="2.43086" BBK_DIFF_A="-0.10544"/>
      <bbk:Obs TIME_PERIOD="2010-07-28" OBS_VALUE="2.5363" BBK_DIFF_A="-0.05857"/>
      <bbk:Obs TIME_PERIOD="2010-07-27" OBS_VALUE="2.59487" BBK_DIFF_A="1.37781"/>
      <bbk:Obs TIME_PERIOD="2010-07-26" OBS_VALUE="1.21706" BBK_DIFF_A="-0.00205"/>
      <bbk:Obs TIME_PERIOD="2010-07-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-07-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-07-23" OBS_VALUE="1.21911" BBK_DIFF_A="-0.03198"/>
      <bbk:Obs TIME_PERIOD="2010-07-22" OBS_VALUE="1.25109" BBK_DIFF_A="-0.01307"/>
      <bbk:Obs TIME_PERIOD="2010-07-21" OBS_VALUE="1.26416" BBK_DIFF_A="-0.03128"/>
      <bbk:Obs TIME_PERIOD="2010-07-20" OBS_VALUE="1.29544" BBK_DIFF_A="-0.01559"/>
      <bbk:Obs TIME_PERIOD="2010-07-19" OBS_VALUE="1.31103" BBK_DIFF_A="-2.19214"/>
      <bbk:Obs TIME_PERIOD="2010-07-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-07-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-07-16" OBS_VALUE="3.50317" BBK_DIFF_A="-0.04141"/>
      <bbk:Obs TIME_PERIOD="2010-07-15" OBS_VALUE="3.54458" BBK_DIFF_A="0.20838"/>
      <bbk:Obs TIME_PERIOD="2010-07-14" OBS_VALUE="3.3362" BBK_DIFF_A="-0.72543"/>
      <bbk:Obs TIME_PERIOD="2010-07-13" OBS_VALUE="4.06163" BBK_DIFF_A="-0.22048"/>
      <bbk:Obs TIME_PERIOD="2010-07-12" OBS_VALUE="4.28211" BBK_DIFF_A="-0.15122"/>
      <bbk:Obs TIME_PERIOD="2010-07-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-07-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-07-09" OBS_VALUE="4.43333" BBK_DIFF_A="0.29263"/>
      <bbk:Obs TIME_PERIOD="2010-07-08" OBS_VALUE="4.1407" BBK_DIFF_A="-0.28916"/>
      <bbk:Obs TIME_PERIOD="2010-07-07" OBS_VALUE="4.42986" BBK_DIFF_A="0.04044"/>
      <bbk:Obs TIME_PERIOD="2010-07-06" OBS_VALUE="4.38942" BBK_DIFF_A="-0.17227"/>
      <bbk:Obs TIME_PERIOD="2010-07-05" OBS_VALUE="4.56169" BBK_DIFF_A="-0.15709"/>
      <bbk:Obs TIME_PERIOD="2010-07-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-07-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-07-02" OBS_VALUE="4.71878" BBK_DIFF_A="0.27329"/>
      <bbk:Obs TIME_PERIOD="2010-07-01" OBS_VALUE="4.44549" BBK_DIFF_A="0.36852"/>
      <bbk:Obs TIME_PERIOD="2010-06-30" OBS_VALUE="4.07697" BBK_DIFF_A="-0.09179"/>
      <bbk:Obs TIME_PERIOD="2010-06-29" OBS_VALUE="4.16876" BBK_DIFF_A="0.04165"/>
      <bbk:Obs TIME_PERIOD="2010-06-28" OBS_VALUE="4.12711" BBK_DIFF_A="-0.61313"/>
      <bbk:Obs TIME_PERIOD="2010-06-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-06-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-06-25" OBS_VALUE="4.74024" BBK_DIFF_A="-0.12807"/>
      <bbk:Obs TIME_PERIOD="2010-06-24" OBS_VALUE="4.86831" BBK_DIFF_A="0.35703"/>
      <bbk:Obs TIME_PERIOD="2010-06-23" OBS_VALUE="4.51128" BBK_DIFF_A="-0.25296"/>
      <bbk:Obs TIME_PERIOD="2010-06-22" OBS_VALUE="4.76424" BBK_DIFF_A="0.53411"/>
      <bbk:Obs TIME_PERIOD="2010-06-21" OBS_VALUE="4.23013" BBK_DIFF_A="-0.34434"/>
      <bbk:Obs TIME_PERIOD="2010-06-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-06-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-06-18" OBS_VALUE="4.57447" BBK_DIFF_A="-1.83635"/>
      <bbk:Obs TIME_PERIOD="2010-06-17" OBS_VALUE="6.41082" BBK_DIFF_A="0.81243"/>
      <bbk:Obs TIME_PERIOD="2010-06-16" OBS_VALUE="5.59839" BBK_DIFF_A="0.97229"/>
      <bbk:Obs TIME_PERIOD="2010-06-15" OBS_VALUE="4.6261" BBK_DIFF_A="-2.20592"/>
      <bbk:Obs TIME_PERIOD="2010-06-14" OBS_VALUE="6.83202" BBK_DIFF_A="0.01793"/>
      <bbk:Obs TIME_PERIOD="2010-06-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-06-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-06-11" OBS_VALUE="6.81409" BBK_DIFF_A="-0.28354"/>
      <bbk:Obs TIME_PERIOD="2010-06-10" OBS_VALUE="7.09763" BBK_DIFF_A="0.11027"/>
      <bbk:Obs TIME_PERIOD="2010-06-09" OBS_VALUE="6.98736" BBK_DIFF_A="-0.77946"/>
      <bbk:Obs TIME_PERIOD="2010-06-08" OBS_VALUE="7.76682" BBK_DIFF_A="1.50757"/>
      <bbk:Obs TIME_PERIOD="2010-06-07" OBS_VALUE="6.25925" BBK_DIFF_A="0.05775"/>
      <bbk:Obs TIME_PERIOD="2010-06-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-06-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-06-04" OBS_VALUE="6.2015" BBK_DIFF_A="0.28044"/>
      <bbk:Obs TIME_PERIOD="2010-06-03" OBS_VALUE="5.92106" BBK_DIFF_A="-0.01466"/>
      <bbk:Obs TIME_PERIOD="2010-06-02" OBS_VALUE="5.93572" BBK_DIFF_A="0.71044"/>
      <bbk:Obs TIME_PERIOD="2010-06-01" OBS_VALUE="5.22528" BBK_DIFF_A="-1.55393"/>
      <bbk:Obs TIME_PERIOD="2010-05-31" OBS_VALUE="6.77921" BBK_DIFF_A="-0.20995"/>
      <bbk:Obs TIME_PERIOD="2010-05-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-05-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-05-28" OBS_VALUE="6.98916" BBK_DIFF_A="1.2361"/>
      <bbk:Obs TIME_PERIOD="2010-05-27" OBS_VALUE="5.75306" BBK_DIFF_A="-0.80357"/>
      <bbk:Obs TIME_PERIOD="2010-05-26" OBS_VALUE="6.55663" BBK_DIFF_A="1.73836"/>
      <bbk:Obs TIME_PERIOD="2010-05-25" OBS_VALUE="4.81827" BBK_DIFF_A="-1.34219"/>
      <bbk:Obs TIME_PERIOD="2010-05-24" OBS_VALUE="6.16046" BBK_DIFF_A="-0.62957"/>
      <bbk:Obs TIME_PERIOD="2010-05-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-05-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-05-21" OBS_VALUE="6.79003" BBK_DIFF_A="0.85307"/>
      <bbk:Obs TIME_PERIOD="2010-05-20" OBS_VALUE="5.93696" BBK_DIFF_A="-1.52868"/>
      <bbk:Obs TIME_PERIOD="2010-05-19" OBS_VALUE="7.46564" BBK_DIFF_A="0.30843"/>
      <bbk:Obs TIME_PERIOD="2010-05-18" OBS_VALUE="7.15721" BBK_DIFF_A="-0.89924"/>
      <bbk:Obs TIME_PERIOD="2010-05-17" OBS_VALUE="8.05645" BBK_DIFF_A="1.09742"/>
      <bbk:Obs TIME_PERIOD="2010-05-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-05-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-05-14" OBS_VALUE="6.95903" BBK_DIFF_A="-1.15292"/>
      <bbk:Obs TIME_PERIOD="2010-05-13" OBS_VALUE="8.11195" BBK_DIFF_A="-2.31018"/>
      <bbk:Obs TIME_PERIOD="2010-05-12" OBS_VALUE="10.42213" BBK_DIFF_A="0.6947"/>
      <bbk:Obs TIME_PERIOD="2010-05-11" OBS_VALUE="9.72743" BBK_DIFF_A="-0.87233"/>
      <bbk:Obs TIME_PERIOD="2010-05-10" OBS_VALUE="10.59976" BBK_DIFF_A="1.92904"/>
      <bbk:Obs TIME_PERIOD="2010-05-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-05-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-05-07" OBS_VALUE="8.67072" BBK_DIFF_A="-0.76352"/>
      <bbk:Obs TIME_PERIOD="2010-05-06" OBS_VALUE="9.43424" BBK_DIFF_A="-0.28635"/>
      <bbk:Obs TIME_PERIOD="2010-05-05" OBS_VALUE="9.72059" BBK_DIFF_A="-0.10803"/>
      <bbk:Obs TIME_PERIOD="2010-05-04" OBS_VALUE="9.82862" BBK_DIFF_A="-0.09392"/>
      <bbk:Obs TIME_PERIOD="2010-05-03" OBS_VALUE="9.92254" BBK_DIFF_A="-0.34464"/>
      <bbk:Obs TIME_PERIOD="2010-05-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-04-30" OBS_VALUE="10.26718" BBK_DIFF_A="0.39253"/>
      <bbk:Obs TIME_PERIOD="2010-04-29" OBS_VALUE="9.87465" BBK_DIFF_A="-0.1501"/>
      <bbk:Obs TIME_PERIOD="2010-04-28" OBS_VALUE="10.02475" BBK_DIFF_A="-0.5756"/>
      <bbk:Obs TIME_PERIOD="2010-04-27" OBS_VALUE="10.60035" BBK_DIFF_A="-0.58879"/>
      <bbk:Obs TIME_PERIOD="2010-04-26" OBS_VALUE="11.18914" BBK_DIFF_A="0.49366"/>
      <bbk:Obs TIME_PERIOD="2010-04-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-04-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-04-23" OBS_VALUE="10.69548" BBK_DIFF_A="-0.5147"/>
      <bbk:Obs TIME_PERIOD="2010-04-22" OBS_VALUE="11.21018" BBK_DIFF_A="0.72929"/>
      <bbk:Obs TIME_PERIOD="2010-04-21" OBS_VALUE="10.48089" BBK_DIFF_A="-0.19691"/>
      <bbk:Obs TIME_PERIOD="2010-04-20" OBS_VALUE="10.6778" BBK_DIFF_A="9.40355"/>
      <bbk:Obs TIME_PERIOD="2010-04-19" OBS_VALUE="1.27425" BBK_DIFF_A="-0.06705"/>
      <bbk:Obs TIME_PERIOD="2010-04-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-04-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-04-16" OBS_VALUE="1.3413" BBK_DIFF_A="0.02661"/>
      <bbk:Obs TIME_PERIOD="2010-04-15" OBS_VALUE="1.31469" BBK_DIFF_A="0.04493"/>
      <bbk:Obs TIME_PERIOD="2010-04-14" OBS_VALUE="1.26976" BBK_DIFF_A="-0.06905"/>
      <bbk:Obs TIME_PERIOD="2010-04-13" OBS_VALUE="1.33881" BBK_DIFF_A="0.08443"/>
      <bbk:Obs TIME_PERIOD="2010-04-12" OBS_VALUE="1.25438" BBK_DIFF_A="-0.05049"/>
      <bbk:Obs TIME_PERIOD="2010-04-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-04-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-04-09" OBS_VALUE="1.30487" BBK_DIFF_A="-0.00843"/>
      <bbk:Obs TIME_PERIOD="2010-04-08" OBS_VALUE="1.3133" BBK_DIFF_A="-0.06077"/>
      <bbk:Obs TIME_PERIOD="2010-04-07" OBS_VALUE="1.37407" BBK_DIFF_A="0.04039"/>
      <bbk:Obs TIME_PERIOD="2010-04-06" OBS_VALUE="1.33368" BBK_DIFF_A="0.12452"/>
      <bbk:Obs TIME_PERIOD="2010-04-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-04-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-04-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-04-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-04-01" OBS_VALUE="1.20916" BBK_DIFF_A="0.13338"/>
      <bbk:Obs TIME_PERIOD="2010-03-31" OBS_VALUE="1.07578" BBK_DIFF_A="0.15293"/>
      <bbk:Obs TIME_PERIOD="2010-03-30" OBS_VALUE="0.92285" BBK_DIFF_A="0.07385"/>
      <bbk:Obs TIME_PERIOD="2010-03-29" OBS_VALUE="0.849" BBK_DIFF_A="0.05017"/>
      <bbk:Obs TIME_PERIOD="2010-03-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-03-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-03-26" OBS_VALUE="0.79883" BBK_DIFF_A="-0.03149"/>
      <bbk:Obs TIME_PERIOD="2010-03-25" OBS_VALUE="0.83032" BBK_DIFF_A="0.05014"/>
      <bbk:Obs TIME_PERIOD="2010-03-24" OBS_VALUE="0.78018" BBK_DIFF_A="-0.1319"/>
      <bbk:Obs TIME_PERIOD="2010-03-23" OBS_VALUE="0.91208" BBK_DIFF_A="-0.01416"/>
      <bbk:Obs TIME_PERIOD="2010-03-22" OBS_VALUE="0.92624" BBK_DIFF_A="-0.0234"/>
      <bbk:Obs TIME_PERIOD="2010-03-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-03-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-03-19" OBS_VALUE="0.94964" BBK_DIFF_A="-0.04299"/>
      <bbk:Obs TIME_PERIOD="2010-03-18" OBS_VALUE="0.99263" BBK_DIFF_A="0.01014"/>
      <bbk:Obs TIME_PERIOD="2010-03-17" OBS_VALUE="0.98249" BBK_DIFF_A="0.06006"/>
      <bbk:Obs TIME_PERIOD="2010-03-16" OBS_VALUE="0.92243" BBK_DIFF_A="-0.00972"/>
      <bbk:Obs TIME_PERIOD="2010-03-15" OBS_VALUE="0.93215" BBK_DIFF_A="0.00951"/>
      <bbk:Obs TIME_PERIOD="2010-03-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-03-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-03-12" OBS_VALUE="0.92264" BBK_DIFF_A="-0.0513"/>
      <bbk:Obs TIME_PERIOD="2010-03-11" OBS_VALUE="0.97394" BBK_DIFF_A="0.01256"/>
      <bbk:Obs TIME_PERIOD="2010-03-10" OBS_VALUE="0.96138" BBK_DIFF_A="0.00533"/>
      <bbk:Obs TIME_PERIOD="2010-03-09" OBS_VALUE="0.95605" BBK_DIFF_A="-0.01516"/>
      <bbk:Obs TIME_PERIOD="2010-03-08" OBS_VALUE="0.97121" BBK_DIFF_A="-0.00869"/>
      <bbk:Obs TIME_PERIOD="2010-03-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-03-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-03-05" OBS_VALUE="0.9799" BBK_DIFF_A="-0.04665"/>
      <bbk:Obs TIME_PERIOD="2010-03-04" OBS_VALUE="1.02655" BBK_DIFF_A="-0.10695"/>
      <bbk:Obs TIME_PERIOD="2010-03-03" OBS_VALUE="1.1335" BBK_DIFF_A="0.01823"/>
      <bbk:Obs TIME_PERIOD="2010-03-02" OBS_VALUE="1.11527" BBK_DIFF_A="0.00537"/>
      <bbk:Obs TIME_PERIOD="2010-03-01" OBS_VALUE="1.1099" BBK_DIFF_A="-0.01273"/>
      <bbk:Obs TIME_PERIOD="2010-02-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-02-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-02-26" OBS_VALUE="1.12263" BBK_DIFF_A="0.10429"/>
      <bbk:Obs TIME_PERIOD="2010-02-25" OBS_VALUE="1.01834" BBK_DIFF_A="-0.08131"/>
      <bbk:Obs TIME_PERIOD="2010-02-24" OBS_VALUE="1.09965" BBK_DIFF_A="-0.05855"/>
      <bbk:Obs TIME_PERIOD="2010-02-23" OBS_VALUE="1.1582" BBK_DIFF_A="0.18794"/>
      <bbk:Obs TIME_PERIOD="2010-02-22" OBS_VALUE="0.97026" BBK_DIFF_A="0.04504"/>
      <bbk:Obs TIME_PERIOD="2010-02-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-02-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-02-19" OBS_VALUE="0.92522" BBK_DIFF_A="-0.04532"/>
      <bbk:Obs TIME_PERIOD="2010-02-18" OBS_VALUE="0.97054" BBK_DIFF_A="0.03193"/>
      <bbk:Obs TIME_PERIOD="2010-02-17" OBS_VALUE="0.93861" BBK_DIFF_A="-0.06266"/>
      <bbk:Obs TIME_PERIOD="2010-02-16" OBS_VALUE="1.00127" BBK_DIFF_A="0.03846"/>
      <bbk:Obs TIME_PERIOD="2010-02-15" OBS_VALUE="0.96281" BBK_DIFF_A="-0.05798"/>
      <bbk:Obs TIME_PERIOD="2010-02-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-02-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-02-12" OBS_VALUE="1.02079" BBK_DIFF_A="0.11767"/>
      <bbk:Obs TIME_PERIOD="2010-02-11" OBS_VALUE="0.90312" BBK_DIFF_A="-5.11412"/>
      <bbk:Obs TIME_PERIOD="2010-02-10" OBS_VALUE="6.01724" BBK_DIFF_A="4.56722"/>
      <bbk:Obs TIME_PERIOD="2010-02-09" OBS_VALUE="1.45002" BBK_DIFF_A="0.14306"/>
      <bbk:Obs TIME_PERIOD="2010-02-08" OBS_VALUE="1.30696" BBK_DIFF_A="-1.87468"/>
      <bbk:Obs TIME_PERIOD="2010-02-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-02-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-02-05" OBS_VALUE="3.18164" BBK_DIFF_A="1.59611"/>
      <bbk:Obs TIME_PERIOD="2010-02-04" OBS_VALUE="1.58553" BBK_DIFF_A="-0.41587"/>
      <bbk:Obs TIME_PERIOD="2010-02-03" OBS_VALUE="2.0014" BBK_DIFF_A="0.65112"/>
      <bbk:Obs TIME_PERIOD="2010-02-02" OBS_VALUE="1.35028" BBK_DIFF_A="-0.27344"/>
      <bbk:Obs TIME_PERIOD="2010-02-01" OBS_VALUE="1.62372" BBK_DIFF_A="0.10361"/>
      <bbk:Obs TIME_PERIOD="2010-01-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-01-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-01-29" OBS_VALUE="1.52011" BBK_DIFF_A="0.30458"/>
      <bbk:Obs TIME_PERIOD="2010-01-28" OBS_VALUE="1.21553" BBK_DIFF_A="-0.42738"/>
      <bbk:Obs TIME_PERIOD="2010-01-27" OBS_VALUE="1.64291" BBK_DIFF_A="-0.02501"/>
      <bbk:Obs TIME_PERIOD="2010-01-26" OBS_VALUE="1.66792" BBK_DIFF_A="-0.2776"/>
      <bbk:Obs TIME_PERIOD="2010-01-25" OBS_VALUE="1.94552" BBK_DIFF_A="0.38595"/>
      <bbk:Obs TIME_PERIOD="2010-01-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-01-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-01-22" OBS_VALUE="1.55957" BBK_DIFF_A="-0.24002"/>
      <bbk:Obs TIME_PERIOD="2010-01-21" OBS_VALUE="1.79959" BBK_DIFF_A="-0.24879"/>
      <bbk:Obs TIME_PERIOD="2010-01-20" OBS_VALUE="2.04838" BBK_DIFF_A="0.21786"/>
      <bbk:Obs TIME_PERIOD="2010-01-19" OBS_VALUE="1.83052" BBK_DIFF_A="-0.70656"/>
      <bbk:Obs TIME_PERIOD="2010-01-18" OBS_VALUE="2.53708" BBK_DIFF_A="-3.8E-4"/>
      <bbk:Obs TIME_PERIOD="2010-01-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-01-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-01-15" OBS_VALUE="2.53746" BBK_DIFF_A="0.39777"/>
      <bbk:Obs TIME_PERIOD="2010-01-14" OBS_VALUE="2.13969" BBK_DIFF_A="-0.19323"/>
      <bbk:Obs TIME_PERIOD="2010-01-13" OBS_VALUE="2.33292" BBK_DIFF_A="0.14269"/>
      <bbk:Obs TIME_PERIOD="2010-01-12" OBS_VALUE="2.19023" BBK_DIFF_A="-0.14795"/>
      <bbk:Obs TIME_PERIOD="2010-01-11" OBS_VALUE="2.33818" BBK_DIFF_A="0.31152"/>
      <bbk:Obs TIME_PERIOD="2010-01-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-01-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-01-08" OBS_VALUE="2.02666" BBK_DIFF_A="0.23429"/>
      <bbk:Obs TIME_PERIOD="2010-01-07" OBS_VALUE="1.79237" BBK_DIFF_A="-0.17437"/>
      <bbk:Obs TIME_PERIOD="2010-01-06" OBS_VALUE="1.96674" BBK_DIFF_A="-0.04707"/>
      <bbk:Obs TIME_PERIOD="2010-01-05" OBS_VALUE="2.01381" BBK_DIFF_A="0.44644"/>
      <bbk:Obs TIME_PERIOD="2010-01-04" OBS_VALUE="1.56737" BBK_DIFF_A="-0.17536"/>
      <bbk:Obs TIME_PERIOD="2010-01-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-01-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2010-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-12-30" OBS_VALUE="1.74273" BBK_DIFF_A="0.33657"/>
      <bbk:Obs TIME_PERIOD="2009-12-29" OBS_VALUE="1.40616" BBK_DIFF_A="-22.43633"/>
      <bbk:Obs TIME_PERIOD="2009-12-28" OBS_VALUE="23.84249" BBK_DIFF_A="-2.67423"/>
      <bbk:Obs TIME_PERIOD="2009-12-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-12-23" OBS_VALUE="26.51672" BBK_DIFF_A="14.45076"/>
      <bbk:Obs TIME_PERIOD="2009-12-22" OBS_VALUE="12.06596" BBK_DIFF_A="9.88309"/>
      <bbk:Obs TIME_PERIOD="2009-12-21" OBS_VALUE="2.18287" BBK_DIFF_A="0.84286"/>
      <bbk:Obs TIME_PERIOD="2009-12-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-12-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-12-18" OBS_VALUE="1.34001" BBK_DIFF_A="-0.00799"/>
      <bbk:Obs TIME_PERIOD="2009-12-17" OBS_VALUE="1.348" BBK_DIFF_A="0.02786"/>
      <bbk:Obs TIME_PERIOD="2009-12-16" OBS_VALUE="1.32014" BBK_DIFF_A="-0.00646"/>
      <bbk:Obs TIME_PERIOD="2009-12-15" OBS_VALUE="1.3266" BBK_DIFF_A="-0.08932"/>
      <bbk:Obs TIME_PERIOD="2009-12-14" OBS_VALUE="1.41592" BBK_DIFF_A="0.06047"/>
      <bbk:Obs TIME_PERIOD="2009-12-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-12-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-12-11" OBS_VALUE="1.35545" BBK_DIFF_A="0.27118"/>
      <bbk:Obs TIME_PERIOD="2009-12-10" OBS_VALUE="1.08427" BBK_DIFF_A="-0.18996"/>
      <bbk:Obs TIME_PERIOD="2009-12-09" OBS_VALUE="1.27423" BBK_DIFF_A="-0.19635"/>
      <bbk:Obs TIME_PERIOD="2009-12-08" OBS_VALUE="1.47058" BBK_DIFF_A="-0.03733"/>
      <bbk:Obs TIME_PERIOD="2009-12-07" OBS_VALUE="1.50791" BBK_DIFF_A="0.03587"/>
      <bbk:Obs TIME_PERIOD="2009-12-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-12-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-12-04" OBS_VALUE="1.47204" BBK_DIFF_A="0.2262"/>
      <bbk:Obs TIME_PERIOD="2009-12-03" OBS_VALUE="1.24584" BBK_DIFF_A="-0.13788"/>
      <bbk:Obs TIME_PERIOD="2009-12-02" OBS_VALUE="1.38372" BBK_DIFF_A="0.05571"/>
      <bbk:Obs TIME_PERIOD="2009-12-01" OBS_VALUE="1.32801" BBK_DIFF_A="-0.10002"/>
      <bbk:Obs TIME_PERIOD="2009-11-30" OBS_VALUE="1.42803" BBK_DIFF_A="0.99563"/>
      <bbk:Obs TIME_PERIOD="2009-11-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-11-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-11-27" OBS_VALUE="0.4324" BBK_DIFF_A="0.11966"/>
      <bbk:Obs TIME_PERIOD="2009-11-26" OBS_VALUE="0.31274" BBK_DIFF_A="-0.00899"/>
      <bbk:Obs TIME_PERIOD="2009-11-25" OBS_VALUE="0.32173" BBK_DIFF_A="-0.02013"/>
      <bbk:Obs TIME_PERIOD="2009-11-24" OBS_VALUE="0.34186" BBK_DIFF_A="-0.0087"/>
      <bbk:Obs TIME_PERIOD="2009-11-23" OBS_VALUE="0.35056" BBK_DIFF_A="-0.07478"/>
      <bbk:Obs TIME_PERIOD="2009-11-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-11-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-11-20" OBS_VALUE="0.42534" BBK_DIFF_A="0.03495"/>
      <bbk:Obs TIME_PERIOD="2009-11-19" OBS_VALUE="0.39039" BBK_DIFF_A="0.00193"/>
      <bbk:Obs TIME_PERIOD="2009-11-18" OBS_VALUE="0.38846" BBK_DIFF_A="-0.01955"/>
      <bbk:Obs TIME_PERIOD="2009-11-17" OBS_VALUE="0.40801" BBK_DIFF_A="0.00412"/>
      <bbk:Obs TIME_PERIOD="2009-11-16" OBS_VALUE="0.40389" BBK_DIFF_A="0.02003"/>
      <bbk:Obs TIME_PERIOD="2009-11-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-11-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-11-13" OBS_VALUE="0.38386" BBK_DIFF_A="0.00875"/>
      <bbk:Obs TIME_PERIOD="2009-11-12" OBS_VALUE="0.37511" BBK_DIFF_A="-1.68392"/>
      <bbk:Obs TIME_PERIOD="2009-11-11" OBS_VALUE="2.05903" BBK_DIFF_A="-0.00256"/>
      <bbk:Obs TIME_PERIOD="2009-11-10" OBS_VALUE="2.06159" BBK_DIFF_A="-0.09393"/>
      <bbk:Obs TIME_PERIOD="2009-11-09" OBS_VALUE="2.15552" BBK_DIFF_A="0.19607"/>
      <bbk:Obs TIME_PERIOD="2009-11-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-11-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-11-06" OBS_VALUE="1.95945" BBK_DIFF_A="0.16445"/>
      <bbk:Obs TIME_PERIOD="2009-11-05" OBS_VALUE="1.795" BBK_DIFF_A="0.08032"/>
      <bbk:Obs TIME_PERIOD="2009-11-04" OBS_VALUE="1.71468" BBK_DIFF_A="-0.10286"/>
      <bbk:Obs TIME_PERIOD="2009-11-03" OBS_VALUE="1.81754" BBK_DIFF_A="0.05977"/>
      <bbk:Obs TIME_PERIOD="2009-11-02" OBS_VALUE="1.75777" BBK_DIFF_A="0.00763"/>
      <bbk:Obs TIME_PERIOD="2009-11-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-10-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-10-30" OBS_VALUE="1.75014" BBK_DIFF_A="0.03719"/>
      <bbk:Obs TIME_PERIOD="2009-10-29" OBS_VALUE="1.71295" BBK_DIFF_A="-0.02206"/>
      <bbk:Obs TIME_PERIOD="2009-10-28" OBS_VALUE="1.73501" BBK_DIFF_A="-0.10835"/>
      <bbk:Obs TIME_PERIOD="2009-10-27" OBS_VALUE="1.84336" BBK_DIFF_A="0.14228"/>
      <bbk:Obs TIME_PERIOD="2009-10-26" OBS_VALUE="1.70108" BBK_DIFF_A="0.06294"/>
      <bbk:Obs TIME_PERIOD="2009-10-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-10-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-10-23" OBS_VALUE="1.63814" BBK_DIFF_A="0.03256"/>
      <bbk:Obs TIME_PERIOD="2009-10-22" OBS_VALUE="1.60558" BBK_DIFF_A="-0.0151"/>
      <bbk:Obs TIME_PERIOD="2009-10-21" OBS_VALUE="1.62068" BBK_DIFF_A="0.07087"/>
      <bbk:Obs TIME_PERIOD="2009-10-20" OBS_VALUE="1.54981" BBK_DIFF_A="0.01655"/>
      <bbk:Obs TIME_PERIOD="2009-10-19" OBS_VALUE="1.53326" BBK_DIFF_A="0.02138"/>
      <bbk:Obs TIME_PERIOD="2009-10-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-10-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-10-16" OBS_VALUE="1.51188" BBK_DIFF_A="-0.03784"/>
      <bbk:Obs TIME_PERIOD="2009-10-15" OBS_VALUE="1.54972" BBK_DIFF_A="0.05392"/>
      <bbk:Obs TIME_PERIOD="2009-10-14" OBS_VALUE="1.4958" BBK_DIFF_A="-0.04591"/>
      <bbk:Obs TIME_PERIOD="2009-10-13" OBS_VALUE="1.54171" BBK_DIFF_A="-0.0115"/>
      <bbk:Obs TIME_PERIOD="2009-10-12" OBS_VALUE="1.55321" BBK_DIFF_A="0.01431"/>
      <bbk:Obs TIME_PERIOD="2009-10-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-10-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-10-09" OBS_VALUE="1.5389" BBK_DIFF_A="-0.05251"/>
      <bbk:Obs TIME_PERIOD="2009-10-08" OBS_VALUE="1.59141" BBK_DIFF_A="-0.21718"/>
      <bbk:Obs TIME_PERIOD="2009-10-07" OBS_VALUE="1.80859" BBK_DIFF_A="0.05356"/>
      <bbk:Obs TIME_PERIOD="2009-10-06" OBS_VALUE="1.75503" BBK_DIFF_A="-0.14719"/>
      <bbk:Obs TIME_PERIOD="2009-10-05" OBS_VALUE="1.90222" BBK_DIFF_A="-10.77212"/>
      <bbk:Obs TIME_PERIOD="2009-10-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-10-02" OBS_VALUE="12.67434" BBK_DIFF_A="-1.44789"/>
      <bbk:Obs TIME_PERIOD="2009-10-01" OBS_VALUE="14.12223" BBK_DIFF_A="0.38654"/>
      <bbk:Obs TIME_PERIOD="2009-09-30" OBS_VALUE="13.73569" BBK_DIFF_A="-0.13741"/>
      <bbk:Obs TIME_PERIOD="2009-09-29" OBS_VALUE="13.8731" BBK_DIFF_A="-0.01979"/>
      <bbk:Obs TIME_PERIOD="2009-09-28" OBS_VALUE="13.89289" BBK_DIFF_A="0.0253"/>
      <bbk:Obs TIME_PERIOD="2009-09-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-09-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-09-25" OBS_VALUE="13.86759" BBK_DIFF_A="-0.30265"/>
      <bbk:Obs TIME_PERIOD="2009-09-24" OBS_VALUE="14.17024" BBK_DIFF_A="-0.05082"/>
      <bbk:Obs TIME_PERIOD="2009-09-23" OBS_VALUE="14.22106" BBK_DIFF_A="-0.2121"/>
      <bbk:Obs TIME_PERIOD="2009-09-22" OBS_VALUE="14.43316" BBK_DIFF_A="-0.17578"/>
      <bbk:Obs TIME_PERIOD="2009-09-21" OBS_VALUE="14.60894" BBK_DIFF_A="0.03086"/>
      <bbk:Obs TIME_PERIOD="2009-09-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-09-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-09-18" OBS_VALUE="14.57808" BBK_DIFF_A="0.60694"/>
      <bbk:Obs TIME_PERIOD="2009-09-17" OBS_VALUE="13.97114" BBK_DIFF_A="-0.25898"/>
      <bbk:Obs TIME_PERIOD="2009-09-16" OBS_VALUE="14.23012" BBK_DIFF_A="-0.15877"/>
      <bbk:Obs TIME_PERIOD="2009-09-15" OBS_VALUE="14.38889" BBK_DIFF_A="-0.40231"/>
      <bbk:Obs TIME_PERIOD="2009-09-14" OBS_VALUE="14.7912" BBK_DIFF_A="0.23427"/>
      <bbk:Obs TIME_PERIOD="2009-09-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-09-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-09-11" OBS_VALUE="14.55693" BBK_DIFF_A="0.0899"/>
      <bbk:Obs TIME_PERIOD="2009-09-10" OBS_VALUE="14.46703" BBK_DIFF_A="-0.86349"/>
      <bbk:Obs TIME_PERIOD="2009-09-09" OBS_VALUE="15.33052" BBK_DIFF_A="-0.0074"/>
      <bbk:Obs TIME_PERIOD="2009-09-08" OBS_VALUE="15.33792" BBK_DIFF_A="0.38671"/>
      <bbk:Obs TIME_PERIOD="2009-09-07" OBS_VALUE="14.95121" BBK_DIFF_A="-0.02213"/>
      <bbk:Obs TIME_PERIOD="2009-09-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-09-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-09-04" OBS_VALUE="14.97334" BBK_DIFF_A="0.0182"/>
      <bbk:Obs TIME_PERIOD="2009-09-03" OBS_VALUE="14.95514" BBK_DIFF_A="-0.10536"/>
      <bbk:Obs TIME_PERIOD="2009-09-02" OBS_VALUE="15.0605" BBK_DIFF_A="0.30119"/>
      <bbk:Obs TIME_PERIOD="2009-09-01" OBS_VALUE="14.75931" BBK_DIFF_A="-0.22019"/>
      <bbk:Obs TIME_PERIOD="2009-08-31" OBS_VALUE="14.9795" BBK_DIFF_A="0.05609"/>
      <bbk:Obs TIME_PERIOD="2009-08-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-08-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-08-28" OBS_VALUE="14.92341" BBK_DIFF_A="-0.11321"/>
      <bbk:Obs TIME_PERIOD="2009-08-27" OBS_VALUE="15.03662" BBK_DIFF_A="-0.24582"/>
      <bbk:Obs TIME_PERIOD="2009-08-26" OBS_VALUE="15.28244" BBK_DIFF_A="0.36706"/>
      <bbk:Obs TIME_PERIOD="2009-08-25" OBS_VALUE="14.91538" BBK_DIFF_A="0.3838"/>
      <bbk:Obs TIME_PERIOD="2009-08-24" OBS_VALUE="14.53158" BBK_DIFF_A="-0.04349"/>
      <bbk:Obs TIME_PERIOD="2009-08-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-08-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-08-21" OBS_VALUE="14.57507" BBK_DIFF_A="0.12862"/>
      <bbk:Obs TIME_PERIOD="2009-08-20" OBS_VALUE="14.44645" BBK_DIFF_A="0.00366"/>
      <bbk:Obs TIME_PERIOD="2009-08-19" OBS_VALUE="14.44279" BBK_DIFF_A="0.16076"/>
      <bbk:Obs TIME_PERIOD="2009-08-18" OBS_VALUE="14.28203" BBK_DIFF_A="13.96928"/>
      <bbk:Obs TIME_PERIOD="2009-08-17" OBS_VALUE="0.31275" BBK_DIFF_A="0.00952"/>
      <bbk:Obs TIME_PERIOD="2009-08-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-08-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-08-14" OBS_VALUE="0.30323" BBK_DIFF_A="-0.00408"/>
      <bbk:Obs TIME_PERIOD="2009-08-13" OBS_VALUE="0.30731" BBK_DIFF_A="0.00928"/>
      <bbk:Obs TIME_PERIOD="2009-08-12" OBS_VALUE="0.29803" BBK_DIFF_A="0.01721"/>
      <bbk:Obs TIME_PERIOD="2009-08-11" OBS_VALUE="0.28082" BBK_DIFF_A="0.0134"/>
      <bbk:Obs TIME_PERIOD="2009-08-10" OBS_VALUE="0.26742" BBK_DIFF_A="-0.01361"/>
      <bbk:Obs TIME_PERIOD="2009-08-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-08-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-08-07" OBS_VALUE="0.28103" BBK_DIFF_A="-0.00356"/>
      <bbk:Obs TIME_PERIOD="2009-08-06" OBS_VALUE="0.28459" BBK_DIFF_A="-0.0114"/>
      <bbk:Obs TIME_PERIOD="2009-08-05" OBS_VALUE="0.29599" BBK_DIFF_A="-0.01897"/>
      <bbk:Obs TIME_PERIOD="2009-08-04" OBS_VALUE="0.31496" BBK_DIFF_A="-0.03068"/>
      <bbk:Obs TIME_PERIOD="2009-08-03" OBS_VALUE="0.34564" BBK_DIFF_A="0.02198"/>
      <bbk:Obs TIME_PERIOD="2009-08-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-08-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-07-31" OBS_VALUE="0.32366" BBK_DIFF_A="-0.01502"/>
      <bbk:Obs TIME_PERIOD="2009-07-30" OBS_VALUE="0.33868" BBK_DIFF_A="0.01206"/>
      <bbk:Obs TIME_PERIOD="2009-07-29" OBS_VALUE="0.32662" BBK_DIFF_A="0.01923"/>
      <bbk:Obs TIME_PERIOD="2009-07-28" OBS_VALUE="0.30739" BBK_DIFF_A="-0.00837"/>
      <bbk:Obs TIME_PERIOD="2009-07-27" OBS_VALUE="0.31576" BBK_DIFF_A="-0.01471"/>
      <bbk:Obs TIME_PERIOD="2009-07-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-07-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-07-24" OBS_VALUE="0.33047" BBK_DIFF_A="-0.02409"/>
      <bbk:Obs TIME_PERIOD="2009-07-23" OBS_VALUE="0.35456" BBK_DIFF_A="-0.00856"/>
      <bbk:Obs TIME_PERIOD="2009-07-22" OBS_VALUE="0.36312" BBK_DIFF_A="-0.00481"/>
      <bbk:Obs TIME_PERIOD="2009-07-21" OBS_VALUE="0.36793" BBK_DIFF_A="0.01555"/>
      <bbk:Obs TIME_PERIOD="2009-07-20" OBS_VALUE="0.35238" BBK_DIFF_A="-0.03149"/>
      <bbk:Obs TIME_PERIOD="2009-07-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-07-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-07-17" OBS_VALUE="0.38387" BBK_DIFF_A="0.01043"/>
      <bbk:Obs TIME_PERIOD="2009-07-16" OBS_VALUE="0.37344" BBK_DIFF_A="-0.00563"/>
      <bbk:Obs TIME_PERIOD="2009-07-15" OBS_VALUE="0.37907" BBK_DIFF_A="0.01141"/>
      <bbk:Obs TIME_PERIOD="2009-07-14" OBS_VALUE="0.36766" BBK_DIFF_A="-0.04148"/>
      <bbk:Obs TIME_PERIOD="2009-07-13" OBS_VALUE="0.40914" BBK_DIFF_A="-0.00861"/>
      <bbk:Obs TIME_PERIOD="2009-07-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-07-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-07-10" OBS_VALUE="0.41775" BBK_DIFF_A="0.00648"/>
      <bbk:Obs TIME_PERIOD="2009-07-09" OBS_VALUE="0.41127" BBK_DIFF_A="-0.05701"/>
      <bbk:Obs TIME_PERIOD="2009-07-08" OBS_VALUE="0.46828" BBK_DIFF_A="0.02267"/>
      <bbk:Obs TIME_PERIOD="2009-07-07" OBS_VALUE="0.44561" BBK_DIFF_A="-0.02033"/>
      <bbk:Obs TIME_PERIOD="2009-07-06" OBS_VALUE="0.46594" BBK_DIFF_A="0.01987"/>
      <bbk:Obs TIME_PERIOD="2009-07-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-07-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-07-03" OBS_VALUE="0.44607" BBK_DIFF_A="0.04241"/>
      <bbk:Obs TIME_PERIOD="2009-07-02" OBS_VALUE="0.40366" BBK_DIFF_A="-0.00187"/>
      <bbk:Obs TIME_PERIOD="2009-07-01" OBS_VALUE="0.40553" BBK_DIFF_A="0.03626"/>
      <bbk:Obs TIME_PERIOD="2009-06-30" OBS_VALUE="0.36927" BBK_DIFF_A="-0.02211"/>
      <bbk:Obs TIME_PERIOD="2009-06-29" OBS_VALUE="0.39138" BBK_DIFF_A="-0.01335"/>
      <bbk:Obs TIME_PERIOD="2009-06-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-06-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-06-26" OBS_VALUE="0.40473" BBK_DIFF_A="-0.01655"/>
      <bbk:Obs TIME_PERIOD="2009-06-25" OBS_VALUE="0.42128" BBK_DIFF_A="-0.00671"/>
      <bbk:Obs TIME_PERIOD="2009-06-24" OBS_VALUE="0.42799" BBK_DIFF_A="-9.3E-4"/>
      <bbk:Obs TIME_PERIOD="2009-06-23" OBS_VALUE="0.42892" BBK_DIFF_A="0.02126"/>
      <bbk:Obs TIME_PERIOD="2009-06-22" OBS_VALUE="0.40766" BBK_DIFF_A="0.01013"/>
      <bbk:Obs TIME_PERIOD="2009-06-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-06-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-06-19" OBS_VALUE="0.39753" BBK_DIFF_A="-0.00406"/>
      <bbk:Obs TIME_PERIOD="2009-06-18" OBS_VALUE="0.40159" BBK_DIFF_A="0.01636"/>
      <bbk:Obs TIME_PERIOD="2009-06-17" OBS_VALUE="0.38523" BBK_DIFF_A="0.02393"/>
      <bbk:Obs TIME_PERIOD="2009-06-16" OBS_VALUE="0.3613" BBK_DIFF_A="-0.00442"/>
      <bbk:Obs TIME_PERIOD="2009-06-15" OBS_VALUE="0.36572" BBK_DIFF_A="-4.2E-4"/>
      <bbk:Obs TIME_PERIOD="2009-06-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-06-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-06-12" OBS_VALUE="0.36614" BBK_DIFF_A="0.00687"/>
      <bbk:Obs TIME_PERIOD="2009-06-11" OBS_VALUE="0.35927" BBK_DIFF_A="-0.02646"/>
      <bbk:Obs TIME_PERIOD="2009-06-10" OBS_VALUE="0.38573" BBK_DIFF_A="0.06411"/>
      <bbk:Obs TIME_PERIOD="2009-06-09" OBS_VALUE="0.32162" BBK_DIFF_A="0.01383"/>
      <bbk:Obs TIME_PERIOD="2009-06-08" OBS_VALUE="0.30779" BBK_DIFF_A="-0.13665"/>
      <bbk:Obs TIME_PERIOD="2009-06-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-06-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-06-05" OBS_VALUE="0.44444" BBK_DIFF_A="-0.19905"/>
      <bbk:Obs TIME_PERIOD="2009-06-04" OBS_VALUE="0.64349" BBK_DIFF_A="-0.10544"/>
      <bbk:Obs TIME_PERIOD="2009-06-03" OBS_VALUE="0.74893" BBK_DIFF_A="0.1332"/>
      <bbk:Obs TIME_PERIOD="2009-06-02" OBS_VALUE="0.61573" BBK_DIFF_A="-0.00578"/>
      <bbk:Obs TIME_PERIOD="2009-06-01" OBS_VALUE="0.62151" BBK_DIFF_A="-0.06589"/>
      <bbk:Obs TIME_PERIOD="2009-05-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-05-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-05-29" OBS_VALUE="0.6874" BBK_DIFF_A="0.03908"/>
      <bbk:Obs TIME_PERIOD="2009-05-28" OBS_VALUE="0.64832" BBK_DIFF_A="-0.0189"/>
      <bbk:Obs TIME_PERIOD="2009-05-27" OBS_VALUE="0.66722" BBK_DIFF_A="0.10591"/>
      <bbk:Obs TIME_PERIOD="2009-05-26" OBS_VALUE="0.56131" BBK_DIFF_A="-29.43869"/>
      <bbk:Obs TIME_PERIOD="2009-05-25" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-05-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-05-22" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-21" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-20" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-19" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-18" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-05-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-05-15" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-14" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-13" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-12" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-11" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-05-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-05-08" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-07" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-06" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-05" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-04" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-05-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-05-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-04-30" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-04-29" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-04-28" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-04-27" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-04-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-04-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-04-24" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-04-23" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-04-22" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-04-21" OBS_VALUE="30.0" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2009-04-20" OBS_VALUE="30.0" BBK_DIFF_A="21.63152"/>
      <bbk:Obs TIME_PERIOD="2009-04-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-04-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-04-17" OBS_VALUE="8.36848" BBK_DIFF_A="-0.05943"/>
      <bbk:Obs TIME_PERIOD="2009-04-16" OBS_VALUE="8.42791" BBK_DIFF_A="1.35658"/>
      <bbk:Obs TIME_PERIOD="2009-04-15" OBS_VALUE="7.07133" BBK_DIFF_A="0.07504"/>
      <bbk:Obs TIME_PERIOD="2009-04-14" OBS_VALUE="6.99629" BBK_DIFF_A="5.96236"/>
      <bbk:Obs TIME_PERIOD="2009-04-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-04-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-04-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-04-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-04-09" OBS_VALUE="1.03393" BBK_DIFF_A="0.04431"/>
      <bbk:Obs TIME_PERIOD="2009-04-08" OBS_VALUE="0.98962" BBK_DIFF_A="-0.15537"/>
      <bbk:Obs TIME_PERIOD="2009-04-07" OBS_VALUE="1.14499" BBK_DIFF_A="0.048"/>
      <bbk:Obs TIME_PERIOD="2009-04-06" OBS_VALUE="1.09699" BBK_DIFF_A="-8.4167"/>
      <bbk:Obs TIME_PERIOD="2009-04-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-04-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-04-03" OBS_VALUE="9.51369" BBK_DIFF_A="0.937"/>
      <bbk:Obs TIME_PERIOD="2009-04-02" OBS_VALUE="8.57669" BBK_DIFF_A="0.43"/>
      <bbk:Obs TIME_PERIOD="2009-04-01" OBS_VALUE="8.14669" BBK_DIFF_A="0.11938"/>
      <bbk:Obs TIME_PERIOD="2009-03-31" OBS_VALUE="8.02731" BBK_DIFF_A="-0.03662"/>
      <bbk:Obs TIME_PERIOD="2009-03-30" OBS_VALUE="8.06393" BBK_DIFF_A="-0.24603"/>
      <bbk:Obs TIME_PERIOD="2009-03-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-03-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-03-27" OBS_VALUE="8.30996" BBK_DIFF_A="0.03574"/>
      <bbk:Obs TIME_PERIOD="2009-03-26" OBS_VALUE="8.27422" BBK_DIFF_A="1.09665"/>
      <bbk:Obs TIME_PERIOD="2009-03-25" OBS_VALUE="7.17757" BBK_DIFF_A="-0.58549"/>
      <bbk:Obs TIME_PERIOD="2009-03-24" OBS_VALUE="7.76306" BBK_DIFF_A="0.27284"/>
      <bbk:Obs TIME_PERIOD="2009-03-23" OBS_VALUE="7.49022" BBK_DIFF_A="-0.01272"/>
      <bbk:Obs TIME_PERIOD="2009-03-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-03-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-03-20" OBS_VALUE="7.50294" BBK_DIFF_A="0.15836"/>
      <bbk:Obs TIME_PERIOD="2009-03-19" OBS_VALUE="7.34458" BBK_DIFF_A="0.34038"/>
      <bbk:Obs TIME_PERIOD="2009-03-18" OBS_VALUE="7.0042" BBK_DIFF_A="0.41382"/>
      <bbk:Obs TIME_PERIOD="2009-03-17" OBS_VALUE="6.59038" BBK_DIFF_A="-0.3993"/>
      <bbk:Obs TIME_PERIOD="2009-03-16" OBS_VALUE="6.98968" BBK_DIFF_A="0.23323"/>
      <bbk:Obs TIME_PERIOD="2009-03-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-03-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-03-13" OBS_VALUE="6.75645" BBK_DIFF_A="-1.09455"/>
      <bbk:Obs TIME_PERIOD="2009-03-12" OBS_VALUE="7.851" BBK_DIFF_A="0.29592"/>
      <bbk:Obs TIME_PERIOD="2009-03-11" OBS_VALUE="7.55508" BBK_DIFF_A="-0.04524"/>
      <bbk:Obs TIME_PERIOD="2009-03-10" OBS_VALUE="7.60032" BBK_DIFF_A="0.19184"/>
      <bbk:Obs TIME_PERIOD="2009-03-09" OBS_VALUE="7.40848" BBK_DIFF_A="0.49242"/>
      <bbk:Obs TIME_PERIOD="2009-03-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-03-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-03-06" OBS_VALUE="6.91606" BBK_DIFF_A="0.2198"/>
      <bbk:Obs TIME_PERIOD="2009-03-05" OBS_VALUE="6.69626" BBK_DIFF_A="0.2306"/>
      <bbk:Obs TIME_PERIOD="2009-03-04" OBS_VALUE="6.46566" BBK_DIFF_A="-0.18389"/>
      <bbk:Obs TIME_PERIOD="2009-03-03" OBS_VALUE="6.64955" BBK_DIFF_A="-0.01208"/>
      <bbk:Obs TIME_PERIOD="2009-03-02" OBS_VALUE="6.66163" BBK_DIFF_A="-0.18725"/>
      <bbk:Obs TIME_PERIOD="2009-03-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-02-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-02-27" OBS_VALUE="6.84888" BBK_DIFF_A="0.10866"/>
      <bbk:Obs TIME_PERIOD="2009-02-26" OBS_VALUE="6.74022" BBK_DIFF_A="0.07126"/>
      <bbk:Obs TIME_PERIOD="2009-02-25" OBS_VALUE="6.66896" BBK_DIFF_A="-0.23722"/>
      <bbk:Obs TIME_PERIOD="2009-02-24" OBS_VALUE="6.90618" BBK_DIFF_A="-0.0235"/>
      <bbk:Obs TIME_PERIOD="2009-02-23" OBS_VALUE="6.92968" BBK_DIFF_A="0.25118"/>
      <bbk:Obs TIME_PERIOD="2009-02-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-02-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-02-20" OBS_VALUE="6.6785" BBK_DIFF_A="-0.08918"/>
      <bbk:Obs TIME_PERIOD="2009-02-19" OBS_VALUE="6.76768" BBK_DIFF_A="0.56672"/>
      <bbk:Obs TIME_PERIOD="2009-02-18" OBS_VALUE="6.20096" BBK_DIFF_A="0.00394"/>
      <bbk:Obs TIME_PERIOD="2009-02-17" OBS_VALUE="6.19702" BBK_DIFF_A="-0.13145"/>
      <bbk:Obs TIME_PERIOD="2009-02-16" OBS_VALUE="6.32847" BBK_DIFF_A="-0.36784"/>
      <bbk:Obs TIME_PERIOD="2009-02-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-02-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-02-13" OBS_VALUE="6.69631" BBK_DIFF_A="0.2038"/>
      <bbk:Obs TIME_PERIOD="2009-02-12" OBS_VALUE="6.49251" BBK_DIFF_A="0.05061"/>
      <bbk:Obs TIME_PERIOD="2009-02-11" OBS_VALUE="6.4419" BBK_DIFF_A="0.03927"/>
      <bbk:Obs TIME_PERIOD="2009-02-10" OBS_VALUE="6.40263" BBK_DIFF_A="-0.07061"/>
      <bbk:Obs TIME_PERIOD="2009-02-09" OBS_VALUE="6.47324" BBK_DIFF_A="-8.8E-4"/>
      <bbk:Obs TIME_PERIOD="2009-02-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-02-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-02-06" OBS_VALUE="6.47412" BBK_DIFF_A="-0.22168"/>
      <bbk:Obs TIME_PERIOD="2009-02-05" OBS_VALUE="6.6958" BBK_DIFF_A="0.00544"/>
      <bbk:Obs TIME_PERIOD="2009-02-04" OBS_VALUE="6.69036" BBK_DIFF_A="0.02715"/>
      <bbk:Obs TIME_PERIOD="2009-02-03" OBS_VALUE="6.66321" BBK_DIFF_A="-0.13105"/>
      <bbk:Obs TIME_PERIOD="2009-02-02" OBS_VALUE="6.79426" BBK_DIFF_A="-0.22122"/>
      <bbk:Obs TIME_PERIOD="2009-02-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-01-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-01-30" OBS_VALUE="7.01548" BBK_DIFF_A="-0.95318"/>
      <bbk:Obs TIME_PERIOD="2009-01-29" OBS_VALUE="7.96866" BBK_DIFF_A="-0.35412"/>
      <bbk:Obs TIME_PERIOD="2009-01-28" OBS_VALUE="8.32278" BBK_DIFF_A="-0.40119"/>
      <bbk:Obs TIME_PERIOD="2009-01-27" OBS_VALUE="8.72397" BBK_DIFF_A="0.47842"/>
      <bbk:Obs TIME_PERIOD="2009-01-26" OBS_VALUE="8.24555" BBK_DIFF_A="0.80399"/>
      <bbk:Obs TIME_PERIOD="2009-01-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-01-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-01-23" OBS_VALUE="7.44156" BBK_DIFF_A="-0.21919"/>
      <bbk:Obs TIME_PERIOD="2009-01-22" OBS_VALUE="7.66075" BBK_DIFF_A="0.01071"/>
      <bbk:Obs TIME_PERIOD="2009-01-21" OBS_VALUE="7.65004" BBK_DIFF_A="0.00292"/>
      <bbk:Obs TIME_PERIOD="2009-01-20" OBS_VALUE="7.64712" BBK_DIFF_A="-0.17954"/>
      <bbk:Obs TIME_PERIOD="2009-01-19" OBS_VALUE="7.82666" BBK_DIFF_A="0.08697"/>
      <bbk:Obs TIME_PERIOD="2009-01-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-01-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-01-16" OBS_VALUE="7.73969" BBK_DIFF_A="0.10803"/>
      <bbk:Obs TIME_PERIOD="2009-01-15" OBS_VALUE="7.63166" BBK_DIFF_A="0.09837"/>
      <bbk:Obs TIME_PERIOD="2009-01-14" OBS_VALUE="7.53329" BBK_DIFF_A="0.08026"/>
      <bbk:Obs TIME_PERIOD="2009-01-13" OBS_VALUE="7.45303" BBK_DIFF_A="-0.06599"/>
      <bbk:Obs TIME_PERIOD="2009-01-12" OBS_VALUE="7.51902" BBK_DIFF_A="0.53214"/>
      <bbk:Obs TIME_PERIOD="2009-01-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-01-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-01-09" OBS_VALUE="6.98688" BBK_DIFF_A="-0.35061"/>
      <bbk:Obs TIME_PERIOD="2009-01-08" OBS_VALUE="7.33749" BBK_DIFF_A="0.38377"/>
      <bbk:Obs TIME_PERIOD="2009-01-07" OBS_VALUE="6.95372" BBK_DIFF_A="-0.12225"/>
      <bbk:Obs TIME_PERIOD="2009-01-06" OBS_VALUE="7.07597" BBK_DIFF_A="-0.37144"/>
      <bbk:Obs TIME_PERIOD="2009-01-05" OBS_VALUE="7.44741" BBK_DIFF_A="0.08852"/>
      <bbk:Obs TIME_PERIOD="2009-01-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-01-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2009-01-02" OBS_VALUE="7.35889" BBK_DIFF_A="-0.59803"/>
      <bbk:Obs TIME_PERIOD="2009-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-12-30" OBS_VALUE="7.95692" BBK_DIFF_A="-0.14208"/>
      <bbk:Obs TIME_PERIOD="2008-12-29" OBS_VALUE="8.099" BBK_DIFF_A="0.32511"/>
      <bbk:Obs TIME_PERIOD="2008-12-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-12-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-12-23" OBS_VALUE="7.77389" BBK_DIFF_A="1.0651"/>
      <bbk:Obs TIME_PERIOD="2008-12-22" OBS_VALUE="6.70879" BBK_DIFF_A="0.12202"/>
      <bbk:Obs TIME_PERIOD="2008-12-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-12-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-12-19" OBS_VALUE="6.58677" BBK_DIFF_A="-0.33564"/>
      <bbk:Obs TIME_PERIOD="2008-12-18" OBS_VALUE="6.92241" BBK_DIFF_A="0.35826"/>
      <bbk:Obs TIME_PERIOD="2008-12-17" OBS_VALUE="6.56415" BBK_DIFF_A="-1.64665"/>
      <bbk:Obs TIME_PERIOD="2008-12-16" OBS_VALUE="8.2108" BBK_DIFF_A="-0.27745"/>
      <bbk:Obs TIME_PERIOD="2008-12-15" OBS_VALUE="8.48825" BBK_DIFF_A="0.82134"/>
      <bbk:Obs TIME_PERIOD="2008-12-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-12-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-12-12" OBS_VALUE="7.66691" BBK_DIFF_A="-0.278"/>
      <bbk:Obs TIME_PERIOD="2008-12-11" OBS_VALUE="7.94491" BBK_DIFF_A="-0.13264"/>
      <bbk:Obs TIME_PERIOD="2008-12-10" OBS_VALUE="8.07755" BBK_DIFF_A="-0.14016"/>
      <bbk:Obs TIME_PERIOD="2008-12-09" OBS_VALUE="8.21771" BBK_DIFF_A="0.05786"/>
      <bbk:Obs TIME_PERIOD="2008-12-08" OBS_VALUE="8.15985" BBK_DIFF_A="0.79588"/>
      <bbk:Obs TIME_PERIOD="2008-12-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-12-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-12-05" OBS_VALUE="7.36397" BBK_DIFF_A="0.84383"/>
      <bbk:Obs TIME_PERIOD="2008-12-04" OBS_VALUE="6.52014" BBK_DIFF_A="-0.30063"/>
      <bbk:Obs TIME_PERIOD="2008-12-03" OBS_VALUE="6.82077" BBK_DIFF_A="0.3008"/>
      <bbk:Obs TIME_PERIOD="2008-12-02" OBS_VALUE="6.51997" BBK_DIFF_A="-0.13716"/>
      <bbk:Obs TIME_PERIOD="2008-12-01" OBS_VALUE="6.65713" BBK_DIFF_A="-0.12247"/>
      <bbk:Obs TIME_PERIOD="2008-11-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-11-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-11-28" OBS_VALUE="6.7796" BBK_DIFF_A="0.70044"/>
      <bbk:Obs TIME_PERIOD="2008-11-27" OBS_VALUE="6.07916" BBK_DIFF_A="-0.19966"/>
      <bbk:Obs TIME_PERIOD="2008-11-26" OBS_VALUE="6.27882" BBK_DIFF_A="-0.38373"/>
      <bbk:Obs TIME_PERIOD="2008-11-25" OBS_VALUE="6.66255" BBK_DIFF_A="-0.05343"/>
      <bbk:Obs TIME_PERIOD="2008-11-24" OBS_VALUE="6.71598" BBK_DIFF_A="0.30623"/>
      <bbk:Obs TIME_PERIOD="2008-11-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-11-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-11-21" OBS_VALUE="6.40975" BBK_DIFF_A="0.34405"/>
      <bbk:Obs TIME_PERIOD="2008-11-20" OBS_VALUE="6.0657" BBK_DIFF_A="0.42366"/>
      <bbk:Obs TIME_PERIOD="2008-11-19" OBS_VALUE="5.64204" BBK_DIFF_A="0.32317"/>
      <bbk:Obs TIME_PERIOD="2008-11-18" OBS_VALUE="5.31887" BBK_DIFF_A="0.04353"/>
      <bbk:Obs TIME_PERIOD="2008-11-17" OBS_VALUE="5.27534" BBK_DIFF_A="-0.18255"/>
      <bbk:Obs TIME_PERIOD="2008-11-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-11-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-11-14" OBS_VALUE="5.45789" BBK_DIFF_A="0.06452"/>
      <bbk:Obs TIME_PERIOD="2008-11-13" OBS_VALUE="5.39337" BBK_DIFF_A="-0.04483"/>
      <bbk:Obs TIME_PERIOD="2008-11-12" OBS_VALUE="5.4382" BBK_DIFF_A="0.18516"/>
      <bbk:Obs TIME_PERIOD="2008-11-11" OBS_VALUE="5.25304" BBK_DIFF_A="0.00495"/>
      <bbk:Obs TIME_PERIOD="2008-11-10" OBS_VALUE="5.24809" BBK_DIFF_A="0.19656"/>
      <bbk:Obs TIME_PERIOD="2008-11-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-11-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-11-07" OBS_VALUE="5.05153" BBK_DIFF_A="-0.11615"/>
      <bbk:Obs TIME_PERIOD="2008-11-06" OBS_VALUE="5.16768" BBK_DIFF_A="-0.18855"/>
      <bbk:Obs TIME_PERIOD="2008-11-05" OBS_VALUE="5.35623" BBK_DIFF_A="5.06428"/>
      <bbk:Obs TIME_PERIOD="2008-11-04" OBS_VALUE="0.29195" BBK_DIFF_A="-0.04459"/>
      <bbk:Obs TIME_PERIOD="2008-11-03" OBS_VALUE="0.33654" BBK_DIFF_A="0.07079"/>
      <bbk:Obs TIME_PERIOD="2008-11-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-11-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-10-31" OBS_VALUE="0.26575" BBK_DIFF_A="-0.07901"/>
      <bbk:Obs TIME_PERIOD="2008-10-30" OBS_VALUE="0.34476" BBK_DIFF_A="0.1216"/>
      <bbk:Obs TIME_PERIOD="2008-10-29" OBS_VALUE="0.22316" BBK_DIFF_A="-0.07758"/>
      <bbk:Obs TIME_PERIOD="2008-10-28" OBS_VALUE="0.30074" BBK_DIFF_A="-8.3E-4"/>
      <bbk:Obs TIME_PERIOD="2008-10-27" OBS_VALUE="0.30157" BBK_DIFF_A="-0.05952"/>
      <bbk:Obs TIME_PERIOD="2008-10-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-10-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-10-24" OBS_VALUE="0.36109" BBK_DIFF_A="-5.58107"/>
      <bbk:Obs TIME_PERIOD="2008-10-23" OBS_VALUE="5.94216" BBK_DIFF_A="0.39283"/>
      <bbk:Obs TIME_PERIOD="2008-10-22" OBS_VALUE="5.54933" BBK_DIFF_A="-1.56172"/>
      <bbk:Obs TIME_PERIOD="2008-10-21" OBS_VALUE="7.11105" BBK_DIFF_A="6.92208"/>
      <bbk:Obs TIME_PERIOD="2008-10-20" OBS_VALUE="0.18897" BBK_DIFF_A="-1.52085"/>
      <bbk:Obs TIME_PERIOD="2008-10-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-10-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-10-17" OBS_VALUE="1.70982" BBK_DIFF_A="0.05351"/>
      <bbk:Obs TIME_PERIOD="2008-10-16" OBS_VALUE="1.65631" BBK_DIFF_A="-0.11231"/>
      <bbk:Obs TIME_PERIOD="2008-10-15" OBS_VALUE="1.76862" BBK_DIFF_A="-0.15505"/>
      <bbk:Obs TIME_PERIOD="2008-10-14" OBS_VALUE="1.92367" BBK_DIFF_A="0.11315"/>
      <bbk:Obs TIME_PERIOD="2008-10-13" OBS_VALUE="1.81052" BBK_DIFF_A="0.44048"/>
      <bbk:Obs TIME_PERIOD="2008-10-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-10-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-10-10" OBS_VALUE="1.37004" BBK_DIFF_A="-0.23289"/>
      <bbk:Obs TIME_PERIOD="2008-10-09" OBS_VALUE="1.60293" BBK_DIFF_A="0.12046"/>
      <bbk:Obs TIME_PERIOD="2008-10-08" OBS_VALUE="1.48247" BBK_DIFF_A="-0.33477"/>
      <bbk:Obs TIME_PERIOD="2008-10-07" OBS_VALUE="1.81724" BBK_DIFF_A="-0.03989"/>
      <bbk:Obs TIME_PERIOD="2008-10-06" OBS_VALUE="1.85713" BBK_DIFF_A="-0.17896"/>
      <bbk:Obs TIME_PERIOD="2008-10-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-10-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-10-03" OBS_VALUE="2.03609" BBK_DIFF_A="-0.1205"/>
      <bbk:Obs TIME_PERIOD="2008-10-02" OBS_VALUE="2.15659" BBK_DIFF_A="0.14862"/>
      <bbk:Obs TIME_PERIOD="2008-10-01" OBS_VALUE="2.00797" BBK_DIFF_A="-0.03464"/>
      <bbk:Obs TIME_PERIOD="2008-09-30" OBS_VALUE="2.04261" BBK_DIFF_A="1.47812"/>
      <bbk:Obs TIME_PERIOD="2008-09-29" OBS_VALUE="0.56449" BBK_DIFF_A="0.13716"/>
      <bbk:Obs TIME_PERIOD="2008-09-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-09-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-09-26" OBS_VALUE="0.42733" BBK_DIFF_A="0.00959"/>
      <bbk:Obs TIME_PERIOD="2008-09-25" OBS_VALUE="0.41774" BBK_DIFF_A="0.01496"/>
      <bbk:Obs TIME_PERIOD="2008-09-24" OBS_VALUE="0.40278" BBK_DIFF_A="-0.02304"/>
      <bbk:Obs TIME_PERIOD="2008-09-23" OBS_VALUE="0.42582" BBK_DIFF_A="-0.01837"/>
      <bbk:Obs TIME_PERIOD="2008-09-22" OBS_VALUE="0.44419" BBK_DIFF_A="-6.00965"/>
      <bbk:Obs TIME_PERIOD="2008-09-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-09-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-09-19" OBS_VALUE="6.45384" BBK_DIFF_A="0.6479"/>
      <bbk:Obs TIME_PERIOD="2008-09-18" OBS_VALUE="5.80594" BBK_DIFF_A="1.31179"/>
      <bbk:Obs TIME_PERIOD="2008-09-17" OBS_VALUE="4.49415" BBK_DIFF_A="0.96807"/>
      <bbk:Obs TIME_PERIOD="2008-09-16" OBS_VALUE="3.52608" BBK_DIFF_A="-0.62332"/>
      <bbk:Obs TIME_PERIOD="2008-09-15" OBS_VALUE="4.1494" BBK_DIFF_A="-1.55989"/>
      <bbk:Obs TIME_PERIOD="2008-09-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-09-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-09-12" OBS_VALUE="5.70929" BBK_DIFF_A="0.05663"/>
      <bbk:Obs TIME_PERIOD="2008-09-11" OBS_VALUE="5.65266" BBK_DIFF_A="-0.14848"/>
      <bbk:Obs TIME_PERIOD="2008-09-10" OBS_VALUE="5.80114" BBK_DIFF_A="-0.19585"/>
      <bbk:Obs TIME_PERIOD="2008-09-09" OBS_VALUE="5.99699" BBK_DIFF_A="-0.1487"/>
      <bbk:Obs TIME_PERIOD="2008-09-08" OBS_VALUE="6.14569" BBK_DIFF_A="0.8285"/>
      <bbk:Obs TIME_PERIOD="2008-09-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-09-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-09-05" OBS_VALUE="5.31719" BBK_DIFF_A="-1.0138"/>
      <bbk:Obs TIME_PERIOD="2008-09-04" OBS_VALUE="6.33099" BBK_DIFF_A="0.18049"/>
      <bbk:Obs TIME_PERIOD="2008-09-03" OBS_VALUE="6.1505" BBK_DIFF_A="-0.19177"/>
      <bbk:Obs TIME_PERIOD="2008-09-02" OBS_VALUE="6.34227" BBK_DIFF_A="0.57148"/>
      <bbk:Obs TIME_PERIOD="2008-09-01" OBS_VALUE="5.77079" BBK_DIFF_A="-0.91171"/>
      <bbk:Obs TIME_PERIOD="2008-08-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-08-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-08-29" OBS_VALUE="6.6825" BBK_DIFF_A="0.13347"/>
      <bbk:Obs TIME_PERIOD="2008-08-28" OBS_VALUE="6.54903" BBK_DIFF_A="0.90594"/>
      <bbk:Obs TIME_PERIOD="2008-08-27" OBS_VALUE="5.64309" BBK_DIFF_A="0.12751"/>
      <bbk:Obs TIME_PERIOD="2008-08-26" OBS_VALUE="5.51558" BBK_DIFF_A="-0.92972"/>
      <bbk:Obs TIME_PERIOD="2008-08-25" OBS_VALUE="6.4453" BBK_DIFF_A="-0.13609"/>
      <bbk:Obs TIME_PERIOD="2008-08-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-08-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-08-22" OBS_VALUE="6.58139" BBK_DIFF_A="0.43968"/>
      <bbk:Obs TIME_PERIOD="2008-08-21" OBS_VALUE="6.14171" BBK_DIFF_A="0.45989"/>
      <bbk:Obs TIME_PERIOD="2008-08-20" OBS_VALUE="5.68182" BBK_DIFF_A="2.08135"/>
      <bbk:Obs TIME_PERIOD="2008-08-19" OBS_VALUE="3.60047" BBK_DIFF_A="-0.54169"/>
      <bbk:Obs TIME_PERIOD="2008-08-18" OBS_VALUE="4.14216" BBK_DIFF_A="-1.18289"/>
      <bbk:Obs TIME_PERIOD="2008-08-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-08-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-08-15" OBS_VALUE="5.32505" BBK_DIFF_A="-0.13657"/>
      <bbk:Obs TIME_PERIOD="2008-08-14" OBS_VALUE="5.46162" BBK_DIFF_A="-0.58274"/>
      <bbk:Obs TIME_PERIOD="2008-08-13" OBS_VALUE="6.04436" BBK_DIFF_A="-0.06089"/>
      <bbk:Obs TIME_PERIOD="2008-08-12" OBS_VALUE="6.10525" BBK_DIFF_A="0.11775"/>
      <bbk:Obs TIME_PERIOD="2008-08-11" OBS_VALUE="5.9875" BBK_DIFF_A="0.07143"/>
      <bbk:Obs TIME_PERIOD="2008-08-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-08-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-08-08" OBS_VALUE="5.91607" BBK_DIFF_A="-1.14606"/>
      <bbk:Obs TIME_PERIOD="2008-08-07" OBS_VALUE="7.06213" BBK_DIFF_A="-0.07749"/>
      <bbk:Obs TIME_PERIOD="2008-08-06" OBS_VALUE="7.13962" BBK_DIFF_A="0.24254"/>
      <bbk:Obs TIME_PERIOD="2008-08-05" OBS_VALUE="6.89708" BBK_DIFF_A="-0.04852"/>
      <bbk:Obs TIME_PERIOD="2008-08-04" OBS_VALUE="6.9456" BBK_DIFF_A="-0.05775"/>
      <bbk:Obs TIME_PERIOD="2008-08-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-08-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-08-01" OBS_VALUE="7.00335" BBK_DIFF_A="-0.82519"/>
      <bbk:Obs TIME_PERIOD="2008-07-31" OBS_VALUE="7.82854" BBK_DIFF_A="5.62641"/>
      <bbk:Obs TIME_PERIOD="2008-07-30" OBS_VALUE="2.20213" BBK_DIFF_A="0.16162"/>
      <bbk:Obs TIME_PERIOD="2008-07-29" OBS_VALUE="2.04051" BBK_DIFF_A="0.06444"/>
      <bbk:Obs TIME_PERIOD="2008-07-28" OBS_VALUE="1.97607" BBK_DIFF_A="-0.20649"/>
      <bbk:Obs TIME_PERIOD="2008-07-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-07-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-07-25" OBS_VALUE="2.18256" BBK_DIFF_A="-0.12348"/>
      <bbk:Obs TIME_PERIOD="2008-07-24" OBS_VALUE="2.30604" BBK_DIFF_A="-0.56503"/>
      <bbk:Obs TIME_PERIOD="2008-07-23" OBS_VALUE="2.87107" BBK_DIFF_A="-0.15563"/>
      <bbk:Obs TIME_PERIOD="2008-07-22" OBS_VALUE="3.0267" BBK_DIFF_A="-0.31993"/>
      <bbk:Obs TIME_PERIOD="2008-07-21" OBS_VALUE="3.34663" BBK_DIFF_A="-7.50786"/>
      <bbk:Obs TIME_PERIOD="2008-07-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-07-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-07-18" OBS_VALUE="10.85449" BBK_DIFF_A="0.15612"/>
      <bbk:Obs TIME_PERIOD="2008-07-17" OBS_VALUE="10.69837" BBK_DIFF_A="0.61841"/>
      <bbk:Obs TIME_PERIOD="2008-07-16" OBS_VALUE="10.07996" BBK_DIFF_A="-0.32149"/>
      <bbk:Obs TIME_PERIOD="2008-07-15" OBS_VALUE="10.40145" BBK_DIFF_A="8.0613"/>
      <bbk:Obs TIME_PERIOD="2008-07-14" OBS_VALUE="2.34015" BBK_DIFF_A="-0.90381"/>
      <bbk:Obs TIME_PERIOD="2008-07-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-07-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-07-11" OBS_VALUE="3.24396" BBK_DIFF_A="0.10318"/>
      <bbk:Obs TIME_PERIOD="2008-07-10" OBS_VALUE="3.14078" BBK_DIFF_A="-0.17158"/>
      <bbk:Obs TIME_PERIOD="2008-07-09" OBS_VALUE="3.31236" BBK_DIFF_A="0.48408"/>
      <bbk:Obs TIME_PERIOD="2008-07-08" OBS_VALUE="2.82828" BBK_DIFF_A="-0.00669"/>
      <bbk:Obs TIME_PERIOD="2008-07-07" OBS_VALUE="2.83497" BBK_DIFF_A="0.1565"/>
      <bbk:Obs TIME_PERIOD="2008-07-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-07-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-07-04" OBS_VALUE="2.67847" BBK_DIFF_A="-1.13033"/>
      <bbk:Obs TIME_PERIOD="2008-07-03" OBS_VALUE="3.8088" BBK_DIFF_A="0.76338"/>
      <bbk:Obs TIME_PERIOD="2008-07-02" OBS_VALUE="3.04542" BBK_DIFF_A="-0.13335"/>
      <bbk:Obs TIME_PERIOD="2008-07-01" OBS_VALUE="3.17877" BBK_DIFF_A="0.26242"/>
      <bbk:Obs TIME_PERIOD="2008-06-30" OBS_VALUE="2.91635" BBK_DIFF_A="0.31476"/>
      <bbk:Obs TIME_PERIOD="2008-06-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-06-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-06-27" OBS_VALUE="2.60159" BBK_DIFF_A="-0.14073"/>
      <bbk:Obs TIME_PERIOD="2008-06-26" OBS_VALUE="2.74232" BBK_DIFF_A="-0.02363"/>
      <bbk:Obs TIME_PERIOD="2008-06-25" OBS_VALUE="2.76595" BBK_DIFF_A="-0.14025"/>
      <bbk:Obs TIME_PERIOD="2008-06-24" OBS_VALUE="2.9062" BBK_DIFF_A="-3.0E-5"/>
      <bbk:Obs TIME_PERIOD="2008-06-23" OBS_VALUE="2.90623" BBK_DIFF_A="-1.55162"/>
      <bbk:Obs TIME_PERIOD="2008-06-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-06-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-06-20" OBS_VALUE="4.45785" BBK_DIFF_A="-0.73842"/>
      <bbk:Obs TIME_PERIOD="2008-06-19" OBS_VALUE="5.19627" BBK_DIFF_A="0.91088"/>
      <bbk:Obs TIME_PERIOD="2008-06-18" OBS_VALUE="4.28539" BBK_DIFF_A="0.64849"/>
      <bbk:Obs TIME_PERIOD="2008-06-17" OBS_VALUE="3.6369" BBK_DIFF_A="-0.17421"/>
      <bbk:Obs TIME_PERIOD="2008-06-16" OBS_VALUE="3.81111" BBK_DIFF_A="0.01076"/>
      <bbk:Obs TIME_PERIOD="2008-06-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-06-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-06-13" OBS_VALUE="3.80035" BBK_DIFF_A="0.50878"/>
      <bbk:Obs TIME_PERIOD="2008-06-12" OBS_VALUE="3.29157" BBK_DIFF_A="0.11132"/>
      <bbk:Obs TIME_PERIOD="2008-06-11" OBS_VALUE="3.18025" BBK_DIFF_A="-0.69689"/>
      <bbk:Obs TIME_PERIOD="2008-06-10" OBS_VALUE="3.87714" BBK_DIFF_A="-1.38831"/>
      <bbk:Obs TIME_PERIOD="2008-06-09" OBS_VALUE="5.26545" BBK_DIFF_A="1.88919"/>
      <bbk:Obs TIME_PERIOD="2008-06-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-06-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-06-06" OBS_VALUE="3.37626" BBK_DIFF_A="3.23473"/>
      <bbk:Obs TIME_PERIOD="2008-06-05" OBS_VALUE="0.14153" BBK_DIFF_A="1.3E-4"/>
      <bbk:Obs TIME_PERIOD="2008-06-04" OBS_VALUE="0.1414" BBK_DIFF_A="0.001"/>
      <bbk:Obs TIME_PERIOD="2008-06-03" OBS_VALUE="0.1404" BBK_DIFF_A="0.00941"/>
      <bbk:Obs TIME_PERIOD="2008-06-02" OBS_VALUE="0.13099" BBK_DIFF_A="-0.00243"/>
      <bbk:Obs TIME_PERIOD="2008-06-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-05-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-05-30" OBS_VALUE="0.13342" BBK_DIFF_A="-0.00709"/>
      <bbk:Obs TIME_PERIOD="2008-05-29" OBS_VALUE="0.14051" BBK_DIFF_A="-1.59001"/>
      <bbk:Obs TIME_PERIOD="2008-05-28" OBS_VALUE="1.73052" BBK_DIFF_A="-0.00414"/>
      <bbk:Obs TIME_PERIOD="2008-05-27" OBS_VALUE="1.73466" BBK_DIFF_A="0.38317"/>
      <bbk:Obs TIME_PERIOD="2008-05-26" OBS_VALUE="1.35149" BBK_DIFF_A="0.66393"/>
      <bbk:Obs TIME_PERIOD="2008-05-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-05-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-05-23" OBS_VALUE="0.68756" BBK_DIFF_A="0.08893"/>
      <bbk:Obs TIME_PERIOD="2008-05-22" OBS_VALUE="0.59863" BBK_DIFF_A="0.07927"/>
      <bbk:Obs TIME_PERIOD="2008-05-21" OBS_VALUE="0.51936" BBK_DIFF_A="0.07259"/>
      <bbk:Obs TIME_PERIOD="2008-05-20" OBS_VALUE="0.44677" BBK_DIFF_A="0.09811"/>
      <bbk:Obs TIME_PERIOD="2008-05-19" OBS_VALUE="0.34866" BBK_DIFF_A="-0.0231"/>
      <bbk:Obs TIME_PERIOD="2008-05-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-05-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-05-16" OBS_VALUE="0.37176" BBK_DIFF_A="0.00212"/>
      <bbk:Obs TIME_PERIOD="2008-05-15" OBS_VALUE="0.36964" BBK_DIFF_A="0.04481"/>
      <bbk:Obs TIME_PERIOD="2008-05-14" OBS_VALUE="0.32483" BBK_DIFF_A="0.02901"/>
      <bbk:Obs TIME_PERIOD="2008-05-13" OBS_VALUE="0.29582" BBK_DIFF_A="9.8E-4"/>
      <bbk:Obs TIME_PERIOD="2008-05-12" OBS_VALUE="0.29484" BBK_DIFF_A="0.0134"/>
      <bbk:Obs TIME_PERIOD="2008-05-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-05-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-05-09" OBS_VALUE="0.28144" BBK_DIFF_A="-0.00258"/>
      <bbk:Obs TIME_PERIOD="2008-05-08" OBS_VALUE="0.28402" BBK_DIFF_A="-0.00706"/>
      <bbk:Obs TIME_PERIOD="2008-05-07" OBS_VALUE="0.29108" BBK_DIFF_A="-0.00974"/>
      <bbk:Obs TIME_PERIOD="2008-05-06" OBS_VALUE="0.30082" BBK_DIFF_A="-0.0031"/>
      <bbk:Obs TIME_PERIOD="2008-05-05" OBS_VALUE="0.30392" BBK_DIFF_A="0.00111"/>
      <bbk:Obs TIME_PERIOD="2008-05-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-05-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-05-02" OBS_VALUE="0.30281" BBK_DIFF_A="0.01921"/>
      <bbk:Obs TIME_PERIOD="2008-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-04-30" OBS_VALUE="0.2836" BBK_DIFF_A="-0.00553"/>
      <bbk:Obs TIME_PERIOD="2008-04-29" OBS_VALUE="0.28913" BBK_DIFF_A="-0.0021"/>
      <bbk:Obs TIME_PERIOD="2008-04-28" OBS_VALUE="0.29123" BBK_DIFF_A="-0.02744"/>
      <bbk:Obs TIME_PERIOD="2008-04-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-04-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-04-25" OBS_VALUE="0.31867" BBK_DIFF_A="0.00716"/>
      <bbk:Obs TIME_PERIOD="2008-04-24" OBS_VALUE="0.31151" BBK_DIFF_A="-0.04342"/>
      <bbk:Obs TIME_PERIOD="2008-04-23" OBS_VALUE="0.35493" BBK_DIFF_A="-0.02269"/>
      <bbk:Obs TIME_PERIOD="2008-04-22" OBS_VALUE="0.37762" BBK_DIFF_A="0.03483"/>
      <bbk:Obs TIME_PERIOD="2008-04-21" OBS_VALUE="0.34279" BBK_DIFF_A="0.0196"/>
      <bbk:Obs TIME_PERIOD="2008-04-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-04-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-04-18" OBS_VALUE="0.32319" BBK_DIFF_A="0.02264"/>
      <bbk:Obs TIME_PERIOD="2008-04-17" OBS_VALUE="0.30055" BBK_DIFF_A="0.01426"/>
      <bbk:Obs TIME_PERIOD="2008-04-16" OBS_VALUE="0.28629" BBK_DIFF_A="0.00243"/>
      <bbk:Obs TIME_PERIOD="2008-04-15" OBS_VALUE="0.28386" BBK_DIFF_A="0.00669"/>
      <bbk:Obs TIME_PERIOD="2008-04-14" OBS_VALUE="0.27717" BBK_DIFF_A="-0.00445"/>
      <bbk:Obs TIME_PERIOD="2008-04-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-04-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-04-11" OBS_VALUE="0.28162" BBK_DIFF_A="0.00422"/>
      <bbk:Obs TIME_PERIOD="2008-04-10" OBS_VALUE="0.2774" BBK_DIFF_A="-0.01506"/>
      <bbk:Obs TIME_PERIOD="2008-04-09" OBS_VALUE="0.29246" BBK_DIFF_A="0.01223"/>
      <bbk:Obs TIME_PERIOD="2008-04-08" OBS_VALUE="0.28023" BBK_DIFF_A="-0.00368"/>
      <bbk:Obs TIME_PERIOD="2008-04-07" OBS_VALUE="0.28391" BBK_DIFF_A="5.0E-4"/>
      <bbk:Obs TIME_PERIOD="2008-04-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-04-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-04-04" OBS_VALUE="0.28341" BBK_DIFF_A="-0.01484"/>
      <bbk:Obs TIME_PERIOD="2008-04-03" OBS_VALUE="0.29825" BBK_DIFF_A="0.00677"/>
      <bbk:Obs TIME_PERIOD="2008-04-02" OBS_VALUE="0.29148" BBK_DIFF_A="0.05761"/>
      <bbk:Obs TIME_PERIOD="2008-04-01" OBS_VALUE="0.23387" BBK_DIFF_A="0.01404"/>
      <bbk:Obs TIME_PERIOD="2008-03-31" OBS_VALUE="0.21983" BBK_DIFF_A="-0.01302"/>
      <bbk:Obs TIME_PERIOD="2008-03-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-03-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-03-28" OBS_VALUE="0.23285" BBK_DIFF_A="0.00222"/>
      <bbk:Obs TIME_PERIOD="2008-03-27" OBS_VALUE="0.23063" BBK_DIFF_A="-0.0078"/>
      <bbk:Obs TIME_PERIOD="2008-03-26" OBS_VALUE="0.23843" BBK_DIFF_A="0.03003"/>
      <bbk:Obs TIME_PERIOD="2008-03-25" OBS_VALUE="0.2084" BBK_DIFF_A="-0.00909"/>
      <bbk:Obs TIME_PERIOD="2008-03-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-03-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-03-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-03-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-03-20" OBS_VALUE="0.21749" BBK_DIFF_A="0.00403"/>
      <bbk:Obs TIME_PERIOD="2008-03-19" OBS_VALUE="0.21346" BBK_DIFF_A="0.00685"/>
      <bbk:Obs TIME_PERIOD="2008-03-18" OBS_VALUE="0.20661" BBK_DIFF_A="-0.0039"/>
      <bbk:Obs TIME_PERIOD="2008-03-17" OBS_VALUE="0.21051" BBK_DIFF_A="-0.00576"/>
      <bbk:Obs TIME_PERIOD="2008-03-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-03-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-03-14" OBS_VALUE="0.21627" BBK_DIFF_A="0.00363"/>
      <bbk:Obs TIME_PERIOD="2008-03-13" OBS_VALUE="0.21264" BBK_DIFF_A="-0.00928"/>
      <bbk:Obs TIME_PERIOD="2008-03-12" OBS_VALUE="0.22192" BBK_DIFF_A="0.01618"/>
      <bbk:Obs TIME_PERIOD="2008-03-11" OBS_VALUE="0.20574" BBK_DIFF_A="-0.01088"/>
      <bbk:Obs TIME_PERIOD="2008-03-10" OBS_VALUE="0.21662" BBK_DIFF_A="-1.20781"/>
      <bbk:Obs TIME_PERIOD="2008-03-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-03-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-03-07" OBS_VALUE="1.42443" BBK_DIFF_A="0.01063"/>
      <bbk:Obs TIME_PERIOD="2008-03-06" OBS_VALUE="1.4138" BBK_DIFF_A="0.13201"/>
      <bbk:Obs TIME_PERIOD="2008-03-05" OBS_VALUE="1.28179" BBK_DIFF_A="-0.09386"/>
      <bbk:Obs TIME_PERIOD="2008-03-04" OBS_VALUE="1.37565" BBK_DIFF_A="0.13235"/>
      <bbk:Obs TIME_PERIOD="2008-03-03" OBS_VALUE="1.2433" BBK_DIFF_A="-0.08708"/>
      <bbk:Obs TIME_PERIOD="2008-03-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-03-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-02-29" OBS_VALUE="1.33038" BBK_DIFF_A="-0.99681"/>
      <bbk:Obs TIME_PERIOD="2008-02-28" OBS_VALUE="2.32719" BBK_DIFF_A="0.0937"/>
      <bbk:Obs TIME_PERIOD="2008-02-27" OBS_VALUE="2.23349" BBK_DIFF_A="-0.28863"/>
      <bbk:Obs TIME_PERIOD="2008-02-26" OBS_VALUE="2.52212" BBK_DIFF_A="0.13227"/>
      <bbk:Obs TIME_PERIOD="2008-02-25" OBS_VALUE="2.38985" BBK_DIFF_A="-0.10206"/>
      <bbk:Obs TIME_PERIOD="2008-02-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-02-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-02-22" OBS_VALUE="2.49191" BBK_DIFF_A="0.12773"/>
      <bbk:Obs TIME_PERIOD="2008-02-21" OBS_VALUE="2.36418" BBK_DIFF_A="0.02232"/>
      <bbk:Obs TIME_PERIOD="2008-02-20" OBS_VALUE="2.34186" BBK_DIFF_A="-0.05958"/>
      <bbk:Obs TIME_PERIOD="2008-02-19" OBS_VALUE="2.40144" BBK_DIFF_A="0.08768"/>
      <bbk:Obs TIME_PERIOD="2008-02-18" OBS_VALUE="2.31376" BBK_DIFF_A="-0.02261"/>
      <bbk:Obs TIME_PERIOD="2008-02-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-02-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-02-15" OBS_VALUE="2.33637" BBK_DIFF_A="0.01794"/>
      <bbk:Obs TIME_PERIOD="2008-02-14" OBS_VALUE="2.31843" BBK_DIFF_A="0.04378"/>
      <bbk:Obs TIME_PERIOD="2008-02-13" OBS_VALUE="2.27465" BBK_DIFF_A="0.04459"/>
      <bbk:Obs TIME_PERIOD="2008-02-12" OBS_VALUE="2.23006" BBK_DIFF_A="-0.02201"/>
      <bbk:Obs TIME_PERIOD="2008-02-11" OBS_VALUE="2.25207" BBK_DIFF_A="0.00931"/>
      <bbk:Obs TIME_PERIOD="2008-02-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-02-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-02-08" OBS_VALUE="2.24276" BBK_DIFF_A="-0.06932"/>
      <bbk:Obs TIME_PERIOD="2008-02-07" OBS_VALUE="2.31208" BBK_DIFF_A="-0.14346"/>
      <bbk:Obs TIME_PERIOD="2008-02-06" OBS_VALUE="2.45554" BBK_DIFF_A="-0.13666"/>
      <bbk:Obs TIME_PERIOD="2008-02-05" OBS_VALUE="2.5922" BBK_DIFF_A="-0.05407"/>
      <bbk:Obs TIME_PERIOD="2008-02-04" OBS_VALUE="2.64627" BBK_DIFF_A="-0.00423"/>
      <bbk:Obs TIME_PERIOD="2008-02-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-02-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-02-01" OBS_VALUE="2.6505" BBK_DIFF_A="-0.0307"/>
      <bbk:Obs TIME_PERIOD="2008-01-31" OBS_VALUE="2.6812" BBK_DIFF_A="-0.09421"/>
      <bbk:Obs TIME_PERIOD="2008-01-30" OBS_VALUE="2.77541" BBK_DIFF_A="-0.05133"/>
      <bbk:Obs TIME_PERIOD="2008-01-29" OBS_VALUE="2.82674" BBK_DIFF_A="-0.02915"/>
      <bbk:Obs TIME_PERIOD="2008-01-28" OBS_VALUE="2.85589" BBK_DIFF_A="0.04665"/>
      <bbk:Obs TIME_PERIOD="2008-01-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-01-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-01-25" OBS_VALUE="2.80924" BBK_DIFF_A="0.03305"/>
      <bbk:Obs TIME_PERIOD="2008-01-24" OBS_VALUE="2.77619" BBK_DIFF_A="0.12865"/>
      <bbk:Obs TIME_PERIOD="2008-01-23" OBS_VALUE="2.64754" BBK_DIFF_A="1.59504"/>
      <bbk:Obs TIME_PERIOD="2008-01-22" OBS_VALUE="1.0525" BBK_DIFF_A="-0.00587"/>
      <bbk:Obs TIME_PERIOD="2008-01-21" OBS_VALUE="1.05837" BBK_DIFF_A="-0.03722"/>
      <bbk:Obs TIME_PERIOD="2008-01-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-01-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-01-18" OBS_VALUE="1.09559" BBK_DIFF_A="0.13203"/>
      <bbk:Obs TIME_PERIOD="2008-01-17" OBS_VALUE="0.96356" BBK_DIFF_A="0.12735"/>
      <bbk:Obs TIME_PERIOD="2008-01-16" OBS_VALUE="0.83621" BBK_DIFF_A="-0.14813"/>
      <bbk:Obs TIME_PERIOD="2008-01-15" OBS_VALUE="0.98434" BBK_DIFF_A="-1.35069"/>
      <bbk:Obs TIME_PERIOD="2008-01-14" OBS_VALUE="2.33503" BBK_DIFF_A="-0.20895"/>
      <bbk:Obs TIME_PERIOD="2008-01-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-01-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-01-11" OBS_VALUE="2.54398" BBK_DIFF_A="0.05414"/>
      <bbk:Obs TIME_PERIOD="2008-01-10" OBS_VALUE="2.48984" BBK_DIFF_A="-0.11841"/>
      <bbk:Obs TIME_PERIOD="2008-01-09" OBS_VALUE="2.60825" BBK_DIFF_A="-0.34288"/>
      <bbk:Obs TIME_PERIOD="2008-01-08" OBS_VALUE="2.95113" BBK_DIFF_A="0.31439"/>
      <bbk:Obs TIME_PERIOD="2008-01-07" OBS_VALUE="2.63674" BBK_DIFF_A="-0.08581"/>
      <bbk:Obs TIME_PERIOD="2008-01-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-01-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2008-01-04" OBS_VALUE="2.72255" BBK_DIFF_A="0.17384"/>
      <bbk:Obs TIME_PERIOD="2008-01-03" OBS_VALUE="2.54871" BBK_DIFF_A="-0.45636"/>
      <bbk:Obs TIME_PERIOD="2008-01-02" OBS_VALUE="3.00507" BBK_DIFF_A="-1.47515"/>
      <bbk:Obs TIME_PERIOD="2008-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-12-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-12-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-12-28" OBS_VALUE="4.48022" BBK_DIFF_A="4.13418"/>
      <bbk:Obs TIME_PERIOD="2007-12-27" OBS_VALUE="0.34604" BBK_DIFF_A="0.03154"/>
      <bbk:Obs TIME_PERIOD="2007-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-12-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-12-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-12-21" OBS_VALUE="0.3145" BBK_DIFF_A="0.00531"/>
      <bbk:Obs TIME_PERIOD="2007-12-20" OBS_VALUE="0.30919" BBK_DIFF_A="0.00836"/>
      <bbk:Obs TIME_PERIOD="2007-12-19" OBS_VALUE="0.30083" BBK_DIFF_A="-0.07829"/>
      <bbk:Obs TIME_PERIOD="2007-12-18" OBS_VALUE="0.37912" BBK_DIFF_A="0.03504"/>
      <bbk:Obs TIME_PERIOD="2007-12-17" OBS_VALUE="0.34408" BBK_DIFF_A="-0.01466"/>
      <bbk:Obs TIME_PERIOD="2007-12-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-12-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-12-14" OBS_VALUE="0.35874" BBK_DIFF_A="0.00797"/>
      <bbk:Obs TIME_PERIOD="2007-12-13" OBS_VALUE="0.35077" BBK_DIFF_A="0.01674"/>
      <bbk:Obs TIME_PERIOD="2007-12-12" OBS_VALUE="0.33403" BBK_DIFF_A="0.00252"/>
      <bbk:Obs TIME_PERIOD="2007-12-11" OBS_VALUE="0.33151" BBK_DIFF_A="0.01722"/>
      <bbk:Obs TIME_PERIOD="2007-12-10" OBS_VALUE="0.31429" BBK_DIFF_A="0.03671"/>
      <bbk:Obs TIME_PERIOD="2007-12-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-12-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-12-07" OBS_VALUE="0.27758" BBK_DIFF_A="0.02446"/>
      <bbk:Obs TIME_PERIOD="2007-12-06" OBS_VALUE="0.25312" BBK_DIFF_A="3.7E-4"/>
      <bbk:Obs TIME_PERIOD="2007-12-05" OBS_VALUE="0.25275" BBK_DIFF_A="0.00223"/>
      <bbk:Obs TIME_PERIOD="2007-12-04" OBS_VALUE="0.25052" BBK_DIFF_A="0.02042"/>
      <bbk:Obs TIME_PERIOD="2007-12-03" OBS_VALUE="0.2301" BBK_DIFF_A="-0.01097"/>
      <bbk:Obs TIME_PERIOD="2007-12-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-12-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-11-30" OBS_VALUE="0.24107" BBK_DIFF_A="0.00431"/>
      <bbk:Obs TIME_PERIOD="2007-11-29" OBS_VALUE="0.23676" BBK_DIFF_A="1.0E-5"/>
      <bbk:Obs TIME_PERIOD="2007-11-28" OBS_VALUE="0.23675" BBK_DIFF_A="-8.2E-4"/>
      <bbk:Obs TIME_PERIOD="2007-11-27" OBS_VALUE="0.23757" BBK_DIFF_A="-3.9E-4"/>
      <bbk:Obs TIME_PERIOD="2007-11-26" OBS_VALUE="0.23796" BBK_DIFF_A="-2.61257"/>
      <bbk:Obs TIME_PERIOD="2007-11-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-11-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-11-23" OBS_VALUE="2.85053" BBK_DIFF_A="0.14695"/>
      <bbk:Obs TIME_PERIOD="2007-11-22" OBS_VALUE="2.70358" BBK_DIFF_A="-0.08397"/>
      <bbk:Obs TIME_PERIOD="2007-11-21" OBS_VALUE="2.78755" BBK_DIFF_A="0.01903"/>
      <bbk:Obs TIME_PERIOD="2007-11-20" OBS_VALUE="2.76852" BBK_DIFF_A="-0.02269"/>
      <bbk:Obs TIME_PERIOD="2007-11-19" OBS_VALUE="2.79121" BBK_DIFF_A="-0.01097"/>
      <bbk:Obs TIME_PERIOD="2007-11-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-11-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-11-16" OBS_VALUE="2.80218" BBK_DIFF_A="0.03295"/>
      <bbk:Obs TIME_PERIOD="2007-11-15" OBS_VALUE="2.76923" BBK_DIFF_A="-0.10363"/>
      <bbk:Obs TIME_PERIOD="2007-11-14" OBS_VALUE="2.87286" BBK_DIFF_A="2.78391"/>
      <bbk:Obs TIME_PERIOD="2007-11-13" OBS_VALUE="0.08895" BBK_DIFF_A="0.05177"/>
      <bbk:Obs TIME_PERIOD="2007-11-12" OBS_VALUE="0.03718" BBK_DIFF_A="0.02197"/>
      <bbk:Obs TIME_PERIOD="2007-11-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-11-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-11-09" OBS_VALUE="0.01521" BBK_DIFF_A="-1.9E-4"/>
      <bbk:Obs TIME_PERIOD="2007-11-08" OBS_VALUE="0.0154" BBK_DIFF_A="0.00414"/>
      <bbk:Obs TIME_PERIOD="2007-11-07" OBS_VALUE="0.01126" BBK_DIFF_A="-0.02869"/>
      <bbk:Obs TIME_PERIOD="2007-11-06" OBS_VALUE="0.03995" BBK_DIFF_A="0.03985"/>
      <bbk:Obs TIME_PERIOD="2007-11-05" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2007-11-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-11-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-11-02" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.52806"/>
      <bbk:Obs TIME_PERIOD="2007-11-01" OBS_VALUE="0.52816" BBK_DIFF_A="0.18911"/>
      <bbk:Obs TIME_PERIOD="2007-10-31" OBS_VALUE="0.33905" BBK_DIFF_A="0.05277"/>
      <bbk:Obs TIME_PERIOD="2007-10-30" OBS_VALUE="0.28628" BBK_DIFF_A="0.02295"/>
      <bbk:Obs TIME_PERIOD="2007-10-29" OBS_VALUE="0.26333" BBK_DIFF_A="0.00998"/>
      <bbk:Obs TIME_PERIOD="2007-10-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-10-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-10-26" OBS_VALUE="0.25335" BBK_DIFF_A="0.02119"/>
      <bbk:Obs TIME_PERIOD="2007-10-25" OBS_VALUE="0.23216" BBK_DIFF_A="-0.01201"/>
      <bbk:Obs TIME_PERIOD="2007-10-24" OBS_VALUE="0.24417" BBK_DIFF_A="-0.03783"/>
      <bbk:Obs TIME_PERIOD="2007-10-23" OBS_VALUE="0.282" BBK_DIFF_A="-2.28944"/>
      <bbk:Obs TIME_PERIOD="2007-10-22" OBS_VALUE="2.57144" BBK_DIFF_A="0.46218"/>
      <bbk:Obs TIME_PERIOD="2007-10-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-10-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-10-19" OBS_VALUE="2.10926" BBK_DIFF_A="0.28936"/>
      <bbk:Obs TIME_PERIOD="2007-10-18" OBS_VALUE="1.8199" BBK_DIFF_A="-0.04816"/>
      <bbk:Obs TIME_PERIOD="2007-10-17" OBS_VALUE="1.86806" BBK_DIFF_A="0.11831"/>
      <bbk:Obs TIME_PERIOD="2007-10-16" OBS_VALUE="1.74975" BBK_DIFF_A="-0.03546"/>
      <bbk:Obs TIME_PERIOD="2007-10-15" OBS_VALUE="1.78521" BBK_DIFF_A="-0.14908"/>
      <bbk:Obs TIME_PERIOD="2007-10-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-10-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-10-12" OBS_VALUE="1.93429" BBK_DIFF_A="-0.39726"/>
      <bbk:Obs TIME_PERIOD="2007-10-11" OBS_VALUE="2.33155" BBK_DIFF_A="0.26353"/>
      <bbk:Obs TIME_PERIOD="2007-10-10" OBS_VALUE="2.06802" BBK_DIFF_A="-0.86356"/>
      <bbk:Obs TIME_PERIOD="2007-10-09" OBS_VALUE="2.93158" BBK_DIFF_A="-16.04473"/>
      <bbk:Obs TIME_PERIOD="2007-10-08" OBS_VALUE="18.97631" BBK_DIFF_A="1.06318"/>
      <bbk:Obs TIME_PERIOD="2007-10-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-10-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-10-05" OBS_VALUE="17.91313" BBK_DIFF_A="-0.80463"/>
      <bbk:Obs TIME_PERIOD="2007-10-04" OBS_VALUE="18.71776" BBK_DIFF_A="0.42525"/>
      <bbk:Obs TIME_PERIOD="2007-10-03" OBS_VALUE="18.29251" BBK_DIFF_A="-2.38273"/>
      <bbk:Obs TIME_PERIOD="2007-10-02" OBS_VALUE="20.67524" BBK_DIFF_A="2.68066"/>
      <bbk:Obs TIME_PERIOD="2007-10-01" OBS_VALUE="17.99458" BBK_DIFF_A="-3.41394"/>
      <bbk:Obs TIME_PERIOD="2007-09-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-09-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-09-28" OBS_VALUE="21.40852" BBK_DIFF_A="-1.36821"/>
      <bbk:Obs TIME_PERIOD="2007-09-27" OBS_VALUE="22.77673" BBK_DIFF_A="1.65089"/>
      <bbk:Obs TIME_PERIOD="2007-09-26" OBS_VALUE="21.12584" BBK_DIFF_A="-1.28883"/>
      <bbk:Obs TIME_PERIOD="2007-09-25" OBS_VALUE="22.41467" BBK_DIFF_A="-1.77602"/>
      <bbk:Obs TIME_PERIOD="2007-09-24" OBS_VALUE="24.19069" BBK_DIFF_A="-1.47923"/>
      <bbk:Obs TIME_PERIOD="2007-09-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-09-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-09-21" OBS_VALUE="25.66992" BBK_DIFF_A="-4.32697"/>
      <bbk:Obs TIME_PERIOD="2007-09-20" OBS_VALUE="29.99689" BBK_DIFF_A="1.39994"/>
      <bbk:Obs TIME_PERIOD="2007-09-19" OBS_VALUE="28.59695" BBK_DIFF_A="-1.25839"/>
      <bbk:Obs TIME_PERIOD="2007-09-18" OBS_VALUE="29.85534" BBK_DIFF_A="0.53904"/>
      <bbk:Obs TIME_PERIOD="2007-09-17" OBS_VALUE="29.3163" BBK_DIFF_A="0.87698"/>
      <bbk:Obs TIME_PERIOD="2007-09-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-09-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-09-14" OBS_VALUE="28.43932" BBK_DIFF_A="1.17624"/>
      <bbk:Obs TIME_PERIOD="2007-09-13" OBS_VALUE="27.26308" BBK_DIFF_A="4.32342"/>
      <bbk:Obs TIME_PERIOD="2007-09-12" OBS_VALUE="22.93966" BBK_DIFF_A="1.35508"/>
      <bbk:Obs TIME_PERIOD="2007-09-11" OBS_VALUE="21.58458" BBK_DIFF_A="0.31432"/>
      <bbk:Obs TIME_PERIOD="2007-09-10" OBS_VALUE="21.27026" BBK_DIFF_A="-0.97"/>
      <bbk:Obs TIME_PERIOD="2007-09-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-09-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-09-07" OBS_VALUE="22.24026" BBK_DIFF_A="0.51732"/>
      <bbk:Obs TIME_PERIOD="2007-09-06" OBS_VALUE="21.72294" BBK_DIFF_A="0.86014"/>
      <bbk:Obs TIME_PERIOD="2007-09-05" OBS_VALUE="20.8628" BBK_DIFF_A="0.62216"/>
      <bbk:Obs TIME_PERIOD="2007-09-04" OBS_VALUE="20.24064" BBK_DIFF_A="-0.59354"/>
      <bbk:Obs TIME_PERIOD="2007-09-03" OBS_VALUE="20.83418" BBK_DIFF_A="-0.50025"/>
      <bbk:Obs TIME_PERIOD="2007-09-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-09-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-08-31" OBS_VALUE="21.33443" BBK_DIFF_A="1.21892"/>
      <bbk:Obs TIME_PERIOD="2007-08-30" OBS_VALUE="20.11551" BBK_DIFF_A="-0.16821"/>
      <bbk:Obs TIME_PERIOD="2007-08-29" OBS_VALUE="20.28372" BBK_DIFF_A="1.14297"/>
      <bbk:Obs TIME_PERIOD="2007-08-28" OBS_VALUE="19.14075" BBK_DIFF_A="-0.45393"/>
      <bbk:Obs TIME_PERIOD="2007-08-27" OBS_VALUE="19.59468" BBK_DIFF_A="2.00155"/>
      <bbk:Obs TIME_PERIOD="2007-08-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-08-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-08-24" OBS_VALUE="17.59313" BBK_DIFF_A="-1.70319"/>
      <bbk:Obs TIME_PERIOD="2007-08-23" OBS_VALUE="19.29632" BBK_DIFF_A="2.89732"/>
      <bbk:Obs TIME_PERIOD="2007-08-22" OBS_VALUE="16.399" BBK_DIFF_A="0.12907"/>
      <bbk:Obs TIME_PERIOD="2007-08-21" OBS_VALUE="16.26993" BBK_DIFF_A="-0.76377"/>
      <bbk:Obs TIME_PERIOD="2007-08-20" OBS_VALUE="17.0337" BBK_DIFF_A="1.56278"/>
      <bbk:Obs TIME_PERIOD="2007-08-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-08-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-08-17" OBS_VALUE="15.47092" BBK_DIFF_A="-0.92992"/>
      <bbk:Obs TIME_PERIOD="2007-08-16" OBS_VALUE="16.40084" BBK_DIFF_A="8.04679"/>
      <bbk:Obs TIME_PERIOD="2007-08-15" OBS_VALUE="8.35405" BBK_DIFF_A="-1.19004"/>
      <bbk:Obs TIME_PERIOD="2007-08-14" OBS_VALUE="9.54409" BBK_DIFF_A="0.18433"/>
      <bbk:Obs TIME_PERIOD="2007-08-13" OBS_VALUE="9.35976" BBK_DIFF_A="6.74355"/>
      <bbk:Obs TIME_PERIOD="2007-08-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-08-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-08-10" OBS_VALUE="2.61621" BBK_DIFF_A="0.28187"/>
      <bbk:Obs TIME_PERIOD="2007-08-09" OBS_VALUE="2.33434" BBK_DIFF_A="-0.66952"/>
      <bbk:Obs TIME_PERIOD="2007-08-08" OBS_VALUE="3.00386" BBK_DIFF_A="0.4864"/>
      <bbk:Obs TIME_PERIOD="2007-08-07" OBS_VALUE="2.51746" BBK_DIFF_A="0.2125"/>
      <bbk:Obs TIME_PERIOD="2007-08-06" OBS_VALUE="2.30496" BBK_DIFF_A="-0.04858"/>
      <bbk:Obs TIME_PERIOD="2007-08-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-08-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-08-03" OBS_VALUE="2.35354" BBK_DIFF_A="-0.06082"/>
      <bbk:Obs TIME_PERIOD="2007-08-02" OBS_VALUE="2.41436" BBK_DIFF_A="0.04845"/>
      <bbk:Obs TIME_PERIOD="2007-08-01" OBS_VALUE="2.36591" BBK_DIFF_A="-0.05593"/>
      <bbk:Obs TIME_PERIOD="2007-07-31" OBS_VALUE="2.42184" BBK_DIFF_A="-0.0665"/>
      <bbk:Obs TIME_PERIOD="2007-07-30" OBS_VALUE="2.48834" BBK_DIFF_A="-0.02401"/>
      <bbk:Obs TIME_PERIOD="2007-07-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-07-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-07-27" OBS_VALUE="2.51235" BBK_DIFF_A="-0.57487"/>
      <bbk:Obs TIME_PERIOD="2007-07-26" OBS_VALUE="3.08722" BBK_DIFF_A="0.09513"/>
      <bbk:Obs TIME_PERIOD="2007-07-25" OBS_VALUE="2.99209" BBK_DIFF_A="-0.2721"/>
      <bbk:Obs TIME_PERIOD="2007-07-24" OBS_VALUE="3.26419" BBK_DIFF_A="0.20841"/>
      <bbk:Obs TIME_PERIOD="2007-07-23" OBS_VALUE="3.05578" BBK_DIFF_A="-0.35003"/>
      <bbk:Obs TIME_PERIOD="2007-07-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-07-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-07-20" OBS_VALUE="3.40581" BBK_DIFF_A="-0.30451"/>
      <bbk:Obs TIME_PERIOD="2007-07-19" OBS_VALUE="3.71032" BBK_DIFF_A="0.24738"/>
      <bbk:Obs TIME_PERIOD="2007-07-18" OBS_VALUE="3.46294" BBK_DIFF_A="0.30807"/>
      <bbk:Obs TIME_PERIOD="2007-07-17" OBS_VALUE="3.15487" BBK_DIFF_A="-0.16587"/>
      <bbk:Obs TIME_PERIOD="2007-07-16" OBS_VALUE="3.32074" BBK_DIFF_A="0.08039"/>
      <bbk:Obs TIME_PERIOD="2007-07-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-07-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-07-13" OBS_VALUE="3.24035" BBK_DIFF_A="0.00577"/>
      <bbk:Obs TIME_PERIOD="2007-07-12" OBS_VALUE="3.23458" BBK_DIFF_A="0.39686"/>
      <bbk:Obs TIME_PERIOD="2007-07-11" OBS_VALUE="2.83772" BBK_DIFF_A="-0.08556"/>
      <bbk:Obs TIME_PERIOD="2007-07-10" OBS_VALUE="2.92328" BBK_DIFF_A="0.09593"/>
      <bbk:Obs TIME_PERIOD="2007-07-09" OBS_VALUE="2.82735" BBK_DIFF_A="-0.27808"/>
      <bbk:Obs TIME_PERIOD="2007-07-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-07-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-07-06" OBS_VALUE="3.10543" BBK_DIFF_A="-0.01146"/>
      <bbk:Obs TIME_PERIOD="2007-07-05" OBS_VALUE="3.11689" BBK_DIFF_A="-0.01276"/>
      <bbk:Obs TIME_PERIOD="2007-07-04" OBS_VALUE="3.12965" BBK_DIFF_A="0.22346"/>
      <bbk:Obs TIME_PERIOD="2007-07-03" OBS_VALUE="2.90619" BBK_DIFF_A="0.00327"/>
      <bbk:Obs TIME_PERIOD="2007-07-02" OBS_VALUE="2.90292" BBK_DIFF_A="-0.1056"/>
      <bbk:Obs TIME_PERIOD="2007-07-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-06-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-06-29" OBS_VALUE="3.00852" BBK_DIFF_A="0.15636"/>
      <bbk:Obs TIME_PERIOD="2007-06-28" OBS_VALUE="2.85216" BBK_DIFF_A="0.16824"/>
      <bbk:Obs TIME_PERIOD="2007-06-27" OBS_VALUE="2.68392" BBK_DIFF_A="-0.26935"/>
      <bbk:Obs TIME_PERIOD="2007-06-26" OBS_VALUE="2.95327" BBK_DIFF_A="0.277"/>
      <bbk:Obs TIME_PERIOD="2007-06-25" OBS_VALUE="2.67627" BBK_DIFF_A="-0.11944"/>
      <bbk:Obs TIME_PERIOD="2007-06-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-06-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-06-22" OBS_VALUE="2.79571" BBK_DIFF_A="-0.44809"/>
      <bbk:Obs TIME_PERIOD="2007-06-21" OBS_VALUE="3.2438" BBK_DIFF_A="-0.10196"/>
      <bbk:Obs TIME_PERIOD="2007-06-20" OBS_VALUE="3.34576" BBK_DIFF_A="0.19781"/>
      <bbk:Obs TIME_PERIOD="2007-06-19" OBS_VALUE="3.14795" BBK_DIFF_A="-0.16027"/>
      <bbk:Obs TIME_PERIOD="2007-06-18" OBS_VALUE="3.30822" BBK_DIFF_A="0.00442"/>
      <bbk:Obs TIME_PERIOD="2007-06-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-06-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-06-15" OBS_VALUE="3.3038" BBK_DIFF_A="0.0873"/>
      <bbk:Obs TIME_PERIOD="2007-06-14" OBS_VALUE="3.2165" BBK_DIFF_A="-0.10251"/>
      <bbk:Obs TIME_PERIOD="2007-06-13" OBS_VALUE="3.31901" BBK_DIFF_A="0.21101"/>
      <bbk:Obs TIME_PERIOD="2007-06-12" OBS_VALUE="3.108" BBK_DIFF_A="0.15211"/>
      <bbk:Obs TIME_PERIOD="2007-06-11" OBS_VALUE="2.95589" BBK_DIFF_A="0.06888"/>
      <bbk:Obs TIME_PERIOD="2007-06-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-06-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-06-08" OBS_VALUE="2.88701" BBK_DIFF_A="-0.27126"/>
      <bbk:Obs TIME_PERIOD="2007-06-07" OBS_VALUE="3.15827" BBK_DIFF_A="-0.27928"/>
      <bbk:Obs TIME_PERIOD="2007-06-06" OBS_VALUE="3.43755" BBK_DIFF_A="0.08451"/>
      <bbk:Obs TIME_PERIOD="2007-06-05" OBS_VALUE="3.35304" BBK_DIFF_A="-1.91627"/>
      <bbk:Obs TIME_PERIOD="2007-06-04" OBS_VALUE="5.26931" BBK_DIFF_A="1.94681"/>
      <bbk:Obs TIME_PERIOD="2007-06-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-06-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-06-01" OBS_VALUE="3.3225" BBK_DIFF_A="-0.06651"/>
      <bbk:Obs TIME_PERIOD="2007-05-31" OBS_VALUE="3.38901" BBK_DIFF_A="0.11677"/>
      <bbk:Obs TIME_PERIOD="2007-05-30" OBS_VALUE="3.27224" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2007-05-29" OBS_VALUE="3.27224" BBK_DIFF_A="1.14281"/>
      <bbk:Obs TIME_PERIOD="2007-05-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-05-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-05-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-05-25" OBS_VALUE="2.12943" BBK_DIFF_A="-0.77829"/>
      <bbk:Obs TIME_PERIOD="2007-05-24" OBS_VALUE="2.90772" BBK_DIFF_A="-0.15107"/>
      <bbk:Obs TIME_PERIOD="2007-05-23" OBS_VALUE="3.05879" BBK_DIFF_A="0.0806"/>
      <bbk:Obs TIME_PERIOD="2007-05-22" OBS_VALUE="2.97819" BBK_DIFF_A="0.05913"/>
      <bbk:Obs TIME_PERIOD="2007-05-21" OBS_VALUE="2.91906" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2007-05-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-05-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-05-18" OBS_VALUE="2.91906" BBK_DIFF_A="0.00378"/>
      <bbk:Obs TIME_PERIOD="2007-05-17" OBS_VALUE="2.91528" BBK_DIFF_A="0.02678"/>
      <bbk:Obs TIME_PERIOD="2007-05-16" OBS_VALUE="2.8885" BBK_DIFF_A="0.03883"/>
      <bbk:Obs TIME_PERIOD="2007-05-15" OBS_VALUE="2.84967" BBK_DIFF_A="-0.08997"/>
      <bbk:Obs TIME_PERIOD="2007-05-14" OBS_VALUE="2.93964" BBK_DIFF_A="0.14476"/>
      <bbk:Obs TIME_PERIOD="2007-05-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-05-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-05-11" OBS_VALUE="2.79488" BBK_DIFF_A="-0.13937"/>
      <bbk:Obs TIME_PERIOD="2007-05-10" OBS_VALUE="2.93425" BBK_DIFF_A="-0.04517"/>
      <bbk:Obs TIME_PERIOD="2007-05-09" OBS_VALUE="2.97942" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2007-05-08" OBS_VALUE="2.97942" BBK_DIFF_A="0.02515"/>
      <bbk:Obs TIME_PERIOD="2007-05-07" OBS_VALUE="2.95427" BBK_DIFF_A="0.09517"/>
      <bbk:Obs TIME_PERIOD="2007-05-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-05-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-05-04" OBS_VALUE="2.8591" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2007-05-03" OBS_VALUE="2.8591" BBK_DIFF_A="-0.01058"/>
      <bbk:Obs TIME_PERIOD="2007-05-02" OBS_VALUE="2.86968" BBK_DIFF_A="0.07053"/>
      <bbk:Obs TIME_PERIOD="2007-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-04-30" OBS_VALUE="2.79915" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2007-04-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-04-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-04-27" OBS_VALUE="2.79915" BBK_DIFF_A="0.06632"/>
      <bbk:Obs TIME_PERIOD="2007-04-26" OBS_VALUE="2.73283" BBK_DIFF_A="-0.05566"/>
      <bbk:Obs TIME_PERIOD="2007-04-25" OBS_VALUE="2.78849" BBK_DIFF_A="0.01523"/>
      <bbk:Obs TIME_PERIOD="2007-04-24" OBS_VALUE="2.77326" BBK_DIFF_A="-0.03696"/>
      <bbk:Obs TIME_PERIOD="2007-04-23" OBS_VALUE="2.81022" BBK_DIFF_A="-0.03207"/>
      <bbk:Obs TIME_PERIOD="2007-04-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-04-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-04-20" OBS_VALUE="2.84229" BBK_DIFF_A="-0.09035"/>
      <bbk:Obs TIME_PERIOD="2007-04-19" OBS_VALUE="2.93264" BBK_DIFF_A="0.00232"/>
      <bbk:Obs TIME_PERIOD="2007-04-18" OBS_VALUE="2.93032" BBK_DIFF_A="0.12646"/>
      <bbk:Obs TIME_PERIOD="2007-04-17" OBS_VALUE="2.80386" BBK_DIFF_A="0.03402"/>
      <bbk:Obs TIME_PERIOD="2007-04-16" OBS_VALUE="2.76984" BBK_DIFF_A="-0.08201"/>
      <bbk:Obs TIME_PERIOD="2007-04-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-04-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-04-13" OBS_VALUE="2.85185" BBK_DIFF_A="0.01982"/>
      <bbk:Obs TIME_PERIOD="2007-04-12" OBS_VALUE="2.83203" BBK_DIFF_A="0.02937"/>
      <bbk:Obs TIME_PERIOD="2007-04-11" OBS_VALUE="2.80266" BBK_DIFF_A="0.06278"/>
      <bbk:Obs TIME_PERIOD="2007-04-10" OBS_VALUE="2.73988" BBK_DIFF_A="-0.09517"/>
      <bbk:Obs TIME_PERIOD="2007-04-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-04-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-04-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-04-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-04-05" OBS_VALUE="2.83505" BBK_DIFF_A="0.05855"/>
      <bbk:Obs TIME_PERIOD="2007-04-04" OBS_VALUE="2.7765" BBK_DIFF_A="-0.20559"/>
      <bbk:Obs TIME_PERIOD="2007-04-03" OBS_VALUE="2.98209" BBK_DIFF_A="-0.00548"/>
      <bbk:Obs TIME_PERIOD="2007-04-02" OBS_VALUE="2.98757" BBK_DIFF_A="0.09327"/>
      <bbk:Obs TIME_PERIOD="2007-04-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-03-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-03-30" OBS_VALUE="2.8943" BBK_DIFF_A="0.11711"/>
      <bbk:Obs TIME_PERIOD="2007-03-29" OBS_VALUE="2.77719" BBK_DIFF_A="-0.03461"/>
      <bbk:Obs TIME_PERIOD="2007-03-28" OBS_VALUE="2.8118" BBK_DIFF_A="-0.04894"/>
      <bbk:Obs TIME_PERIOD="2007-03-27" OBS_VALUE="2.86074" BBK_DIFF_A="0.06626"/>
      <bbk:Obs TIME_PERIOD="2007-03-26" OBS_VALUE="2.79448" BBK_DIFF_A="-0.02047"/>
      <bbk:Obs TIME_PERIOD="2007-03-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-03-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-03-23" OBS_VALUE="2.81495" BBK_DIFF_A="-0.02698"/>
      <bbk:Obs TIME_PERIOD="2007-03-22" OBS_VALUE="2.84193" BBK_DIFF_A="-0.11443"/>
      <bbk:Obs TIME_PERIOD="2007-03-21" OBS_VALUE="2.95636" BBK_DIFF_A="0.08497"/>
      <bbk:Obs TIME_PERIOD="2007-03-20" OBS_VALUE="2.87139" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2007-03-19" OBS_VALUE="2.87139" BBK_DIFF_A="0.16622"/>
      <bbk:Obs TIME_PERIOD="2007-03-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-03-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-03-16" OBS_VALUE="2.70517" BBK_DIFF_A="0.04124"/>
      <bbk:Obs TIME_PERIOD="2007-03-15" OBS_VALUE="2.66393" BBK_DIFF_A="0.0577"/>
      <bbk:Obs TIME_PERIOD="2007-03-14" OBS_VALUE="2.60623" BBK_DIFF_A="0.08523"/>
      <bbk:Obs TIME_PERIOD="2007-03-13" OBS_VALUE="2.521" BBK_DIFF_A="-0.03645"/>
      <bbk:Obs TIME_PERIOD="2007-03-12" OBS_VALUE="2.55745" BBK_DIFF_A="0.0828"/>
      <bbk:Obs TIME_PERIOD="2007-03-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-03-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-03-09" OBS_VALUE="2.47465" BBK_DIFF_A="0.06426"/>
      <bbk:Obs TIME_PERIOD="2007-03-08" OBS_VALUE="2.41039" BBK_DIFF_A="0.02465"/>
      <bbk:Obs TIME_PERIOD="2007-03-07" OBS_VALUE="2.38574" BBK_DIFF_A="0.0948"/>
      <bbk:Obs TIME_PERIOD="2007-03-06" OBS_VALUE="2.29094" BBK_DIFF_A="0.12852"/>
      <bbk:Obs TIME_PERIOD="2007-03-05" OBS_VALUE="2.16242" BBK_DIFF_A="0.04423"/>
      <bbk:Obs TIME_PERIOD="2007-03-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-03-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-03-02" OBS_VALUE="2.11819" BBK_DIFF_A="0.01817"/>
      <bbk:Obs TIME_PERIOD="2007-03-01" OBS_VALUE="2.10002" BBK_DIFF_A="0.04002"/>
      <bbk:Obs TIME_PERIOD="2007-02-28" OBS_VALUE="2.06" BBK_DIFF_A="-0.16527"/>
      <bbk:Obs TIME_PERIOD="2007-02-27" OBS_VALUE="2.22527" BBK_DIFF_A="0.1221"/>
      <bbk:Obs TIME_PERIOD="2007-02-26" OBS_VALUE="2.10317" BBK_DIFF_A="0.03532"/>
      <bbk:Obs TIME_PERIOD="2007-02-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-02-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-02-23" OBS_VALUE="2.06785" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2007-02-22" OBS_VALUE="2.06785" BBK_DIFF_A="-0.005"/>
      <bbk:Obs TIME_PERIOD="2007-02-21" OBS_VALUE="2.07285" BBK_DIFF_A="0.05124"/>
      <bbk:Obs TIME_PERIOD="2007-02-20" OBS_VALUE="2.02161" BBK_DIFF_A="-0.07497"/>
      <bbk:Obs TIME_PERIOD="2007-02-19" OBS_VALUE="2.09658" BBK_DIFF_A="0.06165"/>
      <bbk:Obs TIME_PERIOD="2007-02-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-02-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-02-16" OBS_VALUE="2.03493" BBK_DIFF_A="0.0626"/>
      <bbk:Obs TIME_PERIOD="2007-02-15" OBS_VALUE="1.97233" BBK_DIFF_A="0.02521"/>
      <bbk:Obs TIME_PERIOD="2007-02-14" OBS_VALUE="1.94712" BBK_DIFF_A="0.0309"/>
      <bbk:Obs TIME_PERIOD="2007-02-13" OBS_VALUE="1.91622" BBK_DIFF_A="0.10246"/>
      <bbk:Obs TIME_PERIOD="2007-02-12" OBS_VALUE="1.81376" BBK_DIFF_A="-0.16418"/>
      <bbk:Obs TIME_PERIOD="2007-02-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-02-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-02-09" OBS_VALUE="1.97794" BBK_DIFF_A="-0.04365"/>
      <bbk:Obs TIME_PERIOD="2007-02-08" OBS_VALUE="2.02159" BBK_DIFF_A="-0.05263"/>
      <bbk:Obs TIME_PERIOD="2007-02-07" OBS_VALUE="2.07422" BBK_DIFF_A="0.04456"/>
      <bbk:Obs TIME_PERIOD="2007-02-06" OBS_VALUE="2.02966" BBK_DIFF_A="-0.08868"/>
      <bbk:Obs TIME_PERIOD="2007-02-05" OBS_VALUE="2.11834" BBK_DIFF_A="0.18937"/>
      <bbk:Obs TIME_PERIOD="2007-02-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-02-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-02-02" OBS_VALUE="1.92897" BBK_DIFF_A="0.0227"/>
      <bbk:Obs TIME_PERIOD="2007-02-01" OBS_VALUE="1.90627" BBK_DIFF_A="-0.15604"/>
      <bbk:Obs TIME_PERIOD="2007-01-31" OBS_VALUE="2.06231" BBK_DIFF_A="0.06371"/>
      <bbk:Obs TIME_PERIOD="2007-01-30" OBS_VALUE="1.9986" BBK_DIFF_A="0.05683"/>
      <bbk:Obs TIME_PERIOD="2007-01-29" OBS_VALUE="1.94177" BBK_DIFF_A="-0.00411"/>
      <bbk:Obs TIME_PERIOD="2007-01-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-01-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-01-26" OBS_VALUE="1.94588" BBK_DIFF_A="-0.05558"/>
      <bbk:Obs TIME_PERIOD="2007-01-25" OBS_VALUE="2.00146" BBK_DIFF_A="-0.14154"/>
      <bbk:Obs TIME_PERIOD="2007-01-24" OBS_VALUE="2.143" BBK_DIFF_A="0.1055"/>
      <bbk:Obs TIME_PERIOD="2007-01-23" OBS_VALUE="2.0375" BBK_DIFF_A="-0.02775"/>
      <bbk:Obs TIME_PERIOD="2007-01-22" OBS_VALUE="2.06525" BBK_DIFF_A="-0.03859"/>
      <bbk:Obs TIME_PERIOD="2007-01-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-01-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-01-19" OBS_VALUE="2.10384" BBK_DIFF_A="-0.06808"/>
      <bbk:Obs TIME_PERIOD="2007-01-18" OBS_VALUE="2.17192" BBK_DIFF_A="0.00614"/>
      <bbk:Obs TIME_PERIOD="2007-01-17" OBS_VALUE="2.16578" BBK_DIFF_A="-0.09057"/>
      <bbk:Obs TIME_PERIOD="2007-01-16" OBS_VALUE="2.25635" BBK_DIFF_A="0.27072"/>
      <bbk:Obs TIME_PERIOD="2007-01-15" OBS_VALUE="1.98563" BBK_DIFF_A="-0.08394"/>
      <bbk:Obs TIME_PERIOD="2007-01-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-01-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-01-12" OBS_VALUE="2.06957" BBK_DIFF_A="-0.17799"/>
      <bbk:Obs TIME_PERIOD="2007-01-11" OBS_VALUE="2.24756" BBK_DIFF_A="-0.04458"/>
      <bbk:Obs TIME_PERIOD="2007-01-10" OBS_VALUE="2.29214" BBK_DIFF_A="0.15106"/>
      <bbk:Obs TIME_PERIOD="2007-01-09" OBS_VALUE="2.14108" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2007-01-08" OBS_VALUE="2.14108" BBK_DIFF_A="-0.11477"/>
      <bbk:Obs TIME_PERIOD="2007-01-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-01-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2007-01-05" OBS_VALUE="2.25585" BBK_DIFF_A="-0.02069"/>
      <bbk:Obs TIME_PERIOD="2007-01-04" OBS_VALUE="2.27654" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2007-01-03" OBS_VALUE="2.27654" BBK_DIFF_A="-0.12975"/>
      <bbk:Obs TIME_PERIOD="2007-01-02" OBS_VALUE="2.40629" BBK_DIFF_A="-0.08531"/>
      <bbk:Obs TIME_PERIOD="2007-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-12-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-12-29" OBS_VALUE="2.4916" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2006-12-28" OBS_VALUE="2.4916" BBK_DIFF_A="-0.22643"/>
      <bbk:Obs TIME_PERIOD="2006-12-27" OBS_VALUE="2.71803" BBK_DIFF_A="0.21299"/>
      <bbk:Obs TIME_PERIOD="2006-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-12-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-12-22" OBS_VALUE="2.50504" BBK_DIFF_A="0.04062"/>
      <bbk:Obs TIME_PERIOD="2006-12-21" OBS_VALUE="2.46442" BBK_DIFF_A="0.06971"/>
      <bbk:Obs TIME_PERIOD="2006-12-20" OBS_VALUE="2.39471" BBK_DIFF_A="-0.1649"/>
      <bbk:Obs TIME_PERIOD="2006-12-19" OBS_VALUE="2.55961" BBK_DIFF_A="-0.03946"/>
      <bbk:Obs TIME_PERIOD="2006-12-18" OBS_VALUE="2.59907" BBK_DIFF_A="-0.13422"/>
      <bbk:Obs TIME_PERIOD="2006-12-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-12-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-12-15" OBS_VALUE="2.73329" BBK_DIFF_A="-0.16701"/>
      <bbk:Obs TIME_PERIOD="2006-12-14" OBS_VALUE="2.9003" BBK_DIFF_A="0.08347"/>
      <bbk:Obs TIME_PERIOD="2006-12-13" OBS_VALUE="2.81683" BBK_DIFF_A="0.21982"/>
      <bbk:Obs TIME_PERIOD="2006-12-12" OBS_VALUE="2.59701" BBK_DIFF_A="-0.01786"/>
      <bbk:Obs TIME_PERIOD="2006-12-11" OBS_VALUE="2.61487" BBK_DIFF_A="0.09243"/>
      <bbk:Obs TIME_PERIOD="2006-12-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-12-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-12-08" OBS_VALUE="2.52244" BBK_DIFF_A="0.00115"/>
      <bbk:Obs TIME_PERIOD="2006-12-07" OBS_VALUE="2.52129" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2006-12-06" OBS_VALUE="2.52129" BBK_DIFF_A="0.25037"/>
      <bbk:Obs TIME_PERIOD="2006-12-05" OBS_VALUE="2.27092" BBK_DIFF_A="0.14619"/>
      <bbk:Obs TIME_PERIOD="2006-12-04" OBS_VALUE="2.12473" BBK_DIFF_A="-0.32592"/>
      <bbk:Obs TIME_PERIOD="2006-12-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-12-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-12-01" OBS_VALUE="2.45065" BBK_DIFF_A="0.04093"/>
      <bbk:Obs TIME_PERIOD="2006-11-30" OBS_VALUE="2.40972" BBK_DIFF_A="0.03111"/>
      <bbk:Obs TIME_PERIOD="2006-11-29" OBS_VALUE="2.37861" BBK_DIFF_A="0.12581"/>
      <bbk:Obs TIME_PERIOD="2006-11-28" OBS_VALUE="2.2528" BBK_DIFF_A="-0.10542"/>
      <bbk:Obs TIME_PERIOD="2006-11-27" OBS_VALUE="2.35822" BBK_DIFF_A="-0.06728"/>
      <bbk:Obs TIME_PERIOD="2006-11-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-11-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-11-24" OBS_VALUE="2.4255" BBK_DIFF_A="0.08467"/>
      <bbk:Obs TIME_PERIOD="2006-11-23" OBS_VALUE="2.34083" BBK_DIFF_A="0.01135"/>
      <bbk:Obs TIME_PERIOD="2006-11-22" OBS_VALUE="2.32948" BBK_DIFF_A="0.05407"/>
      <bbk:Obs TIME_PERIOD="2006-11-21" OBS_VALUE="2.27541" BBK_DIFF_A="-0.07229"/>
      <bbk:Obs TIME_PERIOD="2006-11-20" OBS_VALUE="2.3477" BBK_DIFF_A="-0.08738"/>
      <bbk:Obs TIME_PERIOD="2006-11-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-11-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-11-17" OBS_VALUE="2.43508" BBK_DIFF_A="0.021"/>
      <bbk:Obs TIME_PERIOD="2006-11-16" OBS_VALUE="2.41408" BBK_DIFF_A="-0.0597"/>
      <bbk:Obs TIME_PERIOD="2006-11-15" OBS_VALUE="2.47378" BBK_DIFF_A="0.18747"/>
      <bbk:Obs TIME_PERIOD="2006-11-14" OBS_VALUE="2.28631" BBK_DIFF_A="-0.09458"/>
      <bbk:Obs TIME_PERIOD="2006-11-13" OBS_VALUE="2.38089" BBK_DIFF_A="0.06301"/>
      <bbk:Obs TIME_PERIOD="2006-11-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-11-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-11-10" OBS_VALUE="2.31788" BBK_DIFF_A="-0.19234"/>
      <bbk:Obs TIME_PERIOD="2006-11-09" OBS_VALUE="2.51022" BBK_DIFF_A="0.20427"/>
      <bbk:Obs TIME_PERIOD="2006-11-08" OBS_VALUE="2.30595" BBK_DIFF_A="-0.00593"/>
      <bbk:Obs TIME_PERIOD="2006-11-07" OBS_VALUE="2.31188" BBK_DIFF_A="0.11243"/>
      <bbk:Obs TIME_PERIOD="2006-11-06" OBS_VALUE="2.19945" BBK_DIFF_A="0.27159"/>
      <bbk:Obs TIME_PERIOD="2006-11-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-11-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-11-03" OBS_VALUE="1.92786" BBK_DIFF_A="-0.21297"/>
      <bbk:Obs TIME_PERIOD="2006-11-02" OBS_VALUE="2.14083" BBK_DIFF_A="0.16237"/>
      <bbk:Obs TIME_PERIOD="2006-11-01" OBS_VALUE="1.97846" BBK_DIFF_A="-0.14958"/>
      <bbk:Obs TIME_PERIOD="2006-10-31" OBS_VALUE="2.12804" BBK_DIFF_A="-0.03482"/>
      <bbk:Obs TIME_PERIOD="2006-10-30" OBS_VALUE="2.16286" BBK_DIFF_A="0.18945"/>
      <bbk:Obs TIME_PERIOD="2006-10-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-10-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-10-27" OBS_VALUE="1.97341" BBK_DIFF_A="-0.01692"/>
      <bbk:Obs TIME_PERIOD="2006-10-26" OBS_VALUE="1.99033" BBK_DIFF_A="1.44626"/>
      <bbk:Obs TIME_PERIOD="2006-10-25" OBS_VALUE="0.54407" BBK_DIFF_A="-0.01163"/>
      <bbk:Obs TIME_PERIOD="2006-10-24" OBS_VALUE="0.5557" BBK_DIFF_A="0.01472"/>
      <bbk:Obs TIME_PERIOD="2006-10-23" OBS_VALUE="0.54098" BBK_DIFF_A="0.03624"/>
      <bbk:Obs TIME_PERIOD="2006-10-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-10-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-10-20" OBS_VALUE="0.50474" BBK_DIFF_A="5.9E-4"/>
      <bbk:Obs TIME_PERIOD="2006-10-19" OBS_VALUE="0.50415" BBK_DIFF_A="-0.00519"/>
      <bbk:Obs TIME_PERIOD="2006-10-18" OBS_VALUE="0.50934" BBK_DIFF_A="-1.46449"/>
      <bbk:Obs TIME_PERIOD="2006-10-17" OBS_VALUE="1.97383" BBK_DIFF_A="-0.01225"/>
      <bbk:Obs TIME_PERIOD="2006-10-16" OBS_VALUE="1.98608" BBK_DIFF_A="-0.07262"/>
      <bbk:Obs TIME_PERIOD="2006-10-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-10-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-10-13" OBS_VALUE="2.0587" BBK_DIFF_A="-0.06531"/>
      <bbk:Obs TIME_PERIOD="2006-10-12" OBS_VALUE="2.12401" BBK_DIFF_A="-0.03298"/>
      <bbk:Obs TIME_PERIOD="2006-10-11" OBS_VALUE="2.15699" BBK_DIFF_A="0.06587"/>
      <bbk:Obs TIME_PERIOD="2006-10-10" OBS_VALUE="2.09112" BBK_DIFF_A="-0.06023"/>
      <bbk:Obs TIME_PERIOD="2006-10-09" OBS_VALUE="2.15135" BBK_DIFF_A="0.03127"/>
      <bbk:Obs TIME_PERIOD="2006-10-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-10-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-10-06" OBS_VALUE="2.12008" BBK_DIFF_A="-0.0662"/>
      <bbk:Obs TIME_PERIOD="2006-10-05" OBS_VALUE="2.18628" BBK_DIFF_A="-0.07607"/>
      <bbk:Obs TIME_PERIOD="2006-10-04" OBS_VALUE="2.26235" BBK_DIFF_A="0.00197"/>
      <bbk:Obs TIME_PERIOD="2006-10-03" OBS_VALUE="2.26038" BBK_DIFF_A="0.04872"/>
      <bbk:Obs TIME_PERIOD="2006-10-02" OBS_VALUE="2.21166" BBK_DIFF_A="-0.00251"/>
      <bbk:Obs TIME_PERIOD="2006-10-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-09-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-09-29" OBS_VALUE="2.21417" BBK_DIFF_A="0.04269"/>
      <bbk:Obs TIME_PERIOD="2006-09-28" OBS_VALUE="2.17148" BBK_DIFF_A="0.07039"/>
      <bbk:Obs TIME_PERIOD="2006-09-27" OBS_VALUE="2.10109" BBK_DIFF_A="0.01024"/>
      <bbk:Obs TIME_PERIOD="2006-09-26" OBS_VALUE="2.09085" BBK_DIFF_A="0.03542"/>
      <bbk:Obs TIME_PERIOD="2006-09-25" OBS_VALUE="2.05543" BBK_DIFF_A="-0.22429"/>
      <bbk:Obs TIME_PERIOD="2006-09-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-09-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-09-22" OBS_VALUE="2.27972" BBK_DIFF_A="-0.14196"/>
      <bbk:Obs TIME_PERIOD="2006-09-21" OBS_VALUE="2.42168" BBK_DIFF_A="0.0244"/>
      <bbk:Obs TIME_PERIOD="2006-09-20" OBS_VALUE="2.39728" BBK_DIFF_A="-0.06768"/>
      <bbk:Obs TIME_PERIOD="2006-09-19" OBS_VALUE="2.46496" BBK_DIFF_A="-0.0206"/>
      <bbk:Obs TIME_PERIOD="2006-09-18" OBS_VALUE="2.48556" BBK_DIFF_A="0.11909"/>
      <bbk:Obs TIME_PERIOD="2006-09-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-09-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-09-15" OBS_VALUE="2.36647" BBK_DIFF_A="-0.08118"/>
      <bbk:Obs TIME_PERIOD="2006-09-14" OBS_VALUE="2.44765" BBK_DIFF_A="0.06397"/>
      <bbk:Obs TIME_PERIOD="2006-09-13" OBS_VALUE="2.38368" BBK_DIFF_A="-0.00592"/>
      <bbk:Obs TIME_PERIOD="2006-09-12" OBS_VALUE="2.3896" BBK_DIFF_A="0.0159"/>
      <bbk:Obs TIME_PERIOD="2006-09-11" OBS_VALUE="2.3737" BBK_DIFF_A="0.05403"/>
      <bbk:Obs TIME_PERIOD="2006-09-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-09-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-09-08" OBS_VALUE="2.31967" BBK_DIFF_A="0.12073"/>
      <bbk:Obs TIME_PERIOD="2006-09-07" OBS_VALUE="2.19894" BBK_DIFF_A="-0.03807"/>
      <bbk:Obs TIME_PERIOD="2006-09-06" OBS_VALUE="2.23701" BBK_DIFF_A="0.06927"/>
      <bbk:Obs TIME_PERIOD="2006-09-05" OBS_VALUE="2.16774" BBK_DIFF_A="-0.00451"/>
      <bbk:Obs TIME_PERIOD="2006-09-04" OBS_VALUE="2.17225" BBK_DIFF_A="0.02827"/>
      <bbk:Obs TIME_PERIOD="2006-09-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-09-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-09-01" OBS_VALUE="2.14398" BBK_DIFF_A="0.03202"/>
      <bbk:Obs TIME_PERIOD="2006-08-31" OBS_VALUE="2.11196" BBK_DIFF_A="0.01191"/>
      <bbk:Obs TIME_PERIOD="2006-08-30" OBS_VALUE="2.10005" BBK_DIFF_A="0.00826"/>
      <bbk:Obs TIME_PERIOD="2006-08-29" OBS_VALUE="2.09179" BBK_DIFF_A="0.00476"/>
      <bbk:Obs TIME_PERIOD="2006-08-28" OBS_VALUE="2.08703" BBK_DIFF_A="0.01795"/>
      <bbk:Obs TIME_PERIOD="2006-08-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-08-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-08-25" OBS_VALUE="2.06908" BBK_DIFF_A="-0.0183"/>
      <bbk:Obs TIME_PERIOD="2006-08-24" OBS_VALUE="2.08738" BBK_DIFF_A="-0.05287"/>
      <bbk:Obs TIME_PERIOD="2006-08-23" OBS_VALUE="2.14025" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2006-08-22" OBS_VALUE="2.14025" BBK_DIFF_A="-0.14595"/>
      <bbk:Obs TIME_PERIOD="2006-08-21" OBS_VALUE="2.2862" BBK_DIFF_A="-0.01568"/>
      <bbk:Obs TIME_PERIOD="2006-08-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-08-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-08-18" OBS_VALUE="2.30188" BBK_DIFF_A="0.00918"/>
      <bbk:Obs TIME_PERIOD="2006-08-17" OBS_VALUE="2.2927" BBK_DIFF_A="0.04405"/>
      <bbk:Obs TIME_PERIOD="2006-08-16" OBS_VALUE="2.24865" BBK_DIFF_A="0.08649"/>
      <bbk:Obs TIME_PERIOD="2006-08-15" OBS_VALUE="2.16216" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2006-08-14" OBS_VALUE="2.16216" BBK_DIFF_A="-0.02575"/>
      <bbk:Obs TIME_PERIOD="2006-08-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-08-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-08-11" OBS_VALUE="2.18791" BBK_DIFF_A="0.09686"/>
      <bbk:Obs TIME_PERIOD="2006-08-10" OBS_VALUE="2.09105" BBK_DIFF_A="-0.05652"/>
      <bbk:Obs TIME_PERIOD="2006-08-09" OBS_VALUE="2.14757" BBK_DIFF_A="0.11449"/>
      <bbk:Obs TIME_PERIOD="2006-08-08" OBS_VALUE="2.03308" BBK_DIFF_A="-0.07712"/>
      <bbk:Obs TIME_PERIOD="2006-08-07" OBS_VALUE="2.1102" BBK_DIFF_A="-0.06507"/>
      <bbk:Obs TIME_PERIOD="2006-08-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-08-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-08-04" OBS_VALUE="2.17527" BBK_DIFF_A="0.08809"/>
      <bbk:Obs TIME_PERIOD="2006-08-03" OBS_VALUE="2.08718" BBK_DIFF_A="0.03725"/>
      <bbk:Obs TIME_PERIOD="2006-08-02" OBS_VALUE="2.04993" BBK_DIFF_A="-0.07336"/>
      <bbk:Obs TIME_PERIOD="2006-08-01" OBS_VALUE="2.12329" BBK_DIFF_A="-0.08353"/>
      <bbk:Obs TIME_PERIOD="2006-07-31" OBS_VALUE="2.20682" BBK_DIFF_A="-0.00791"/>
      <bbk:Obs TIME_PERIOD="2006-07-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-07-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-07-28" OBS_VALUE="2.21473" BBK_DIFF_A="0.0324"/>
      <bbk:Obs TIME_PERIOD="2006-07-27" OBS_VALUE="2.18233" BBK_DIFF_A="-0.01645"/>
      <bbk:Obs TIME_PERIOD="2006-07-26" OBS_VALUE="2.19878" BBK_DIFF_A="0.08783"/>
      <bbk:Obs TIME_PERIOD="2006-07-25" OBS_VALUE="2.11095" BBK_DIFF_A="-0.01926"/>
      <bbk:Obs TIME_PERIOD="2006-07-24" OBS_VALUE="2.13021" BBK_DIFF_A="0.01793"/>
      <bbk:Obs TIME_PERIOD="2006-07-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-07-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-07-21" OBS_VALUE="2.11228" BBK_DIFF_A="0.02021"/>
      <bbk:Obs TIME_PERIOD="2006-07-20" OBS_VALUE="2.09207" BBK_DIFF_A="-0.15417"/>
      <bbk:Obs TIME_PERIOD="2006-07-19" OBS_VALUE="2.24624" BBK_DIFF_A="0.13193"/>
      <bbk:Obs TIME_PERIOD="2006-07-18" OBS_VALUE="2.11431" BBK_DIFF_A="0.08436"/>
      <bbk:Obs TIME_PERIOD="2006-07-17" OBS_VALUE="2.02995" BBK_DIFF_A="-0.00645"/>
      <bbk:Obs TIME_PERIOD="2006-07-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-07-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-07-14" OBS_VALUE="2.0364" BBK_DIFF_A="0.02785"/>
      <bbk:Obs TIME_PERIOD="2006-07-13" OBS_VALUE="2.00855" BBK_DIFF_A="-7.1E-4"/>
      <bbk:Obs TIME_PERIOD="2006-07-12" OBS_VALUE="2.00926" BBK_DIFF_A="0.03385"/>
      <bbk:Obs TIME_PERIOD="2006-07-11" OBS_VALUE="1.97541" BBK_DIFF_A="1.0E-4"/>
      <bbk:Obs TIME_PERIOD="2006-07-10" OBS_VALUE="1.97531" BBK_DIFF_A="0.05717"/>
      <bbk:Obs TIME_PERIOD="2006-07-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-07-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-07-07" OBS_VALUE="1.91814" BBK_DIFF_A="0.0769"/>
      <bbk:Obs TIME_PERIOD="2006-07-06" OBS_VALUE="1.84124" BBK_DIFF_A="-0.0398"/>
      <bbk:Obs TIME_PERIOD="2006-07-05" OBS_VALUE="1.88104" BBK_DIFF_A="-0.02741"/>
      <bbk:Obs TIME_PERIOD="2006-07-04" OBS_VALUE="1.90845" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2006-07-03" OBS_VALUE="1.90845" BBK_DIFF_A="0.01365"/>
      <bbk:Obs TIME_PERIOD="2006-07-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-07-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-06-30" OBS_VALUE="1.8948" BBK_DIFF_A="-0.01257"/>
      <bbk:Obs TIME_PERIOD="2006-06-29" OBS_VALUE="1.90737" BBK_DIFF_A="-0.08255"/>
      <bbk:Obs TIME_PERIOD="2006-06-28" OBS_VALUE="1.98992" BBK_DIFF_A="-0.03397"/>
      <bbk:Obs TIME_PERIOD="2006-06-27" OBS_VALUE="2.02389" BBK_DIFF_A="-0.03211"/>
      <bbk:Obs TIME_PERIOD="2006-06-26" OBS_VALUE="2.056" BBK_DIFF_A="0.02569"/>
      <bbk:Obs TIME_PERIOD="2006-06-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-06-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-06-23" OBS_VALUE="2.03031" BBK_DIFF_A="0.02398"/>
      <bbk:Obs TIME_PERIOD="2006-06-22" OBS_VALUE="2.00633" BBK_DIFF_A="-0.05001"/>
      <bbk:Obs TIME_PERIOD="2006-06-21" OBS_VALUE="2.05634" BBK_DIFF_A="0.05315"/>
      <bbk:Obs TIME_PERIOD="2006-06-20" OBS_VALUE="2.00319" BBK_DIFF_A="1.91198"/>
      <bbk:Obs TIME_PERIOD="2006-06-19" OBS_VALUE="0.09121" BBK_DIFF_A="-4.9E-4"/>
      <bbk:Obs TIME_PERIOD="2006-06-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-06-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-06-16" OBS_VALUE="0.0917" BBK_DIFF_A="-1.89616"/>
      <bbk:Obs TIME_PERIOD="2006-06-15" OBS_VALUE="1.98786" BBK_DIFF_A="0.00768"/>
      <bbk:Obs TIME_PERIOD="2006-06-14" OBS_VALUE="1.98018" BBK_DIFF_A="0.07423"/>
      <bbk:Obs TIME_PERIOD="2006-06-13" OBS_VALUE="1.90595" BBK_DIFF_A="-0.00881"/>
      <bbk:Obs TIME_PERIOD="2006-06-12" OBS_VALUE="1.91476" BBK_DIFF_A="0.04159"/>
      <bbk:Obs TIME_PERIOD="2006-06-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-06-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-06-09" OBS_VALUE="1.87317" BBK_DIFF_A="-0.11458"/>
      <bbk:Obs TIME_PERIOD="2006-06-08" OBS_VALUE="1.98775" BBK_DIFF_A="0.01354"/>
      <bbk:Obs TIME_PERIOD="2006-06-07" OBS_VALUE="1.97421" BBK_DIFF_A="0.00763"/>
      <bbk:Obs TIME_PERIOD="2006-06-06" OBS_VALUE="1.96658" BBK_DIFF_A="-0.03387"/>
      <bbk:Obs TIME_PERIOD="2006-06-05" OBS_VALUE="2.00045" BBK_DIFF_A="0.06132"/>
      <bbk:Obs TIME_PERIOD="2006-06-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-06-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-06-02" OBS_VALUE="1.93913" BBK_DIFF_A="0.05274"/>
      <bbk:Obs TIME_PERIOD="2006-06-01" OBS_VALUE="1.88639" BBK_DIFF_A="-0.149"/>
      <bbk:Obs TIME_PERIOD="2006-05-31" OBS_VALUE="2.03539" BBK_DIFF_A="0.00445"/>
      <bbk:Obs TIME_PERIOD="2006-05-30" OBS_VALUE="2.03094" BBK_DIFF_A="0.05635"/>
      <bbk:Obs TIME_PERIOD="2006-05-29" OBS_VALUE="1.97459" BBK_DIFF_A="0.01799"/>
      <bbk:Obs TIME_PERIOD="2006-05-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-05-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-05-26" OBS_VALUE="1.9566" BBK_DIFF_A="0.04179"/>
      <bbk:Obs TIME_PERIOD="2006-05-25" OBS_VALUE="1.91481" BBK_DIFF_A="0.09729"/>
      <bbk:Obs TIME_PERIOD="2006-05-24" OBS_VALUE="1.81752" BBK_DIFF_A="-0.09554"/>
      <bbk:Obs TIME_PERIOD="2006-05-23" OBS_VALUE="1.91306" BBK_DIFF_A="0.04325"/>
      <bbk:Obs TIME_PERIOD="2006-05-22" OBS_VALUE="1.86981" BBK_DIFF_A="0.1111"/>
      <bbk:Obs TIME_PERIOD="2006-05-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-05-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-05-19" OBS_VALUE="1.75871" BBK_DIFF_A="-0.07396"/>
      <bbk:Obs TIME_PERIOD="2006-05-18" OBS_VALUE="1.83267" BBK_DIFF_A="0.22682"/>
      <bbk:Obs TIME_PERIOD="2006-05-17" OBS_VALUE="1.60585" BBK_DIFF_A="0.02672"/>
      <bbk:Obs TIME_PERIOD="2006-05-16" OBS_VALUE="1.57913" BBK_DIFF_A="-0.06957"/>
      <bbk:Obs TIME_PERIOD="2006-05-15" OBS_VALUE="1.6487" BBK_DIFF_A="0.06227"/>
      <bbk:Obs TIME_PERIOD="2006-05-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-05-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-05-12" OBS_VALUE="1.58643" BBK_DIFF_A="0.03017"/>
      <bbk:Obs TIME_PERIOD="2006-05-11" OBS_VALUE="1.55626" BBK_DIFF_A="-0.10336"/>
      <bbk:Obs TIME_PERIOD="2006-05-10" OBS_VALUE="1.65962" BBK_DIFF_A="-0.10235"/>
      <bbk:Obs TIME_PERIOD="2006-05-09" OBS_VALUE="1.76197" BBK_DIFF_A="-0.07915"/>
      <bbk:Obs TIME_PERIOD="2006-05-08" OBS_VALUE="1.84112" BBK_DIFF_A="0.09523"/>
      <bbk:Obs TIME_PERIOD="2006-05-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-05-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-05-05" OBS_VALUE="1.74589" BBK_DIFF_A="0.18458"/>
      <bbk:Obs TIME_PERIOD="2006-05-04" OBS_VALUE="1.56131" BBK_DIFF_A="-0.19253"/>
      <bbk:Obs TIME_PERIOD="2006-05-03" OBS_VALUE="1.75384" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2006-05-02" OBS_VALUE="1.75384" BBK_DIFF_A="-0.0714"/>
      <bbk:Obs TIME_PERIOD="2006-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-04-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-04-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-04-28" OBS_VALUE="1.82524" BBK_DIFF_A="-0.02789"/>
      <bbk:Obs TIME_PERIOD="2006-04-27" OBS_VALUE="1.85313" BBK_DIFF_A="-0.1426"/>
      <bbk:Obs TIME_PERIOD="2006-04-26" OBS_VALUE="1.99573" BBK_DIFF_A="-0.0137"/>
      <bbk:Obs TIME_PERIOD="2006-04-25" OBS_VALUE="2.00943" BBK_DIFF_A="0.09676"/>
      <bbk:Obs TIME_PERIOD="2006-04-24" OBS_VALUE="1.91267" BBK_DIFF_A="0.01693"/>
      <bbk:Obs TIME_PERIOD="2006-04-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-04-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-04-21" OBS_VALUE="1.89574" BBK_DIFF_A="0.08655"/>
      <bbk:Obs TIME_PERIOD="2006-04-20" OBS_VALUE="1.80919" BBK_DIFF_A="-0.07463"/>
      <bbk:Obs TIME_PERIOD="2006-04-19" OBS_VALUE="1.88382" BBK_DIFF_A="0.02661"/>
      <bbk:Obs TIME_PERIOD="2006-04-18" OBS_VALUE="1.85721" BBK_DIFF_A="-0.2946"/>
      <bbk:Obs TIME_PERIOD="2006-04-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-04-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-04-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-04-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-04-13" OBS_VALUE="2.15181" BBK_DIFF_A="0.24405"/>
      <bbk:Obs TIME_PERIOD="2006-04-12" OBS_VALUE="1.90776" BBK_DIFF_A="-0.16013"/>
      <bbk:Obs TIME_PERIOD="2006-04-11" OBS_VALUE="2.06789" BBK_DIFF_A="-0.08909"/>
      <bbk:Obs TIME_PERIOD="2006-04-10" OBS_VALUE="2.15698" BBK_DIFF_A="0.08485"/>
      <bbk:Obs TIME_PERIOD="2006-04-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-04-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-04-07" OBS_VALUE="2.07213" BBK_DIFF_A="0.14683"/>
      <bbk:Obs TIME_PERIOD="2006-04-06" OBS_VALUE="1.9253" BBK_DIFF_A="0.10297"/>
      <bbk:Obs TIME_PERIOD="2006-04-05" OBS_VALUE="1.82233" BBK_DIFF_A="0.05504"/>
      <bbk:Obs TIME_PERIOD="2006-04-04" OBS_VALUE="1.76729" BBK_DIFF_A="-0.16077"/>
      <bbk:Obs TIME_PERIOD="2006-04-03" OBS_VALUE="1.92806" BBK_DIFF_A="-0.09026"/>
      <bbk:Obs TIME_PERIOD="2006-04-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-04-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-03-31" OBS_VALUE="2.01832" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2006-03-30" OBS_VALUE="2.01832" BBK_DIFF_A="-0.05034"/>
      <bbk:Obs TIME_PERIOD="2006-03-29" OBS_VALUE="2.06866" BBK_DIFF_A="-0.00239"/>
      <bbk:Obs TIME_PERIOD="2006-03-28" OBS_VALUE="2.07105" BBK_DIFF_A="0.02275"/>
      <bbk:Obs TIME_PERIOD="2006-03-27" OBS_VALUE="2.0483" BBK_DIFF_A="-0.01974"/>
      <bbk:Obs TIME_PERIOD="2006-03-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-03-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-03-24" OBS_VALUE="2.06804" BBK_DIFF_A="-0.06323"/>
      <bbk:Obs TIME_PERIOD="2006-03-23" OBS_VALUE="2.13127" BBK_DIFF_A="0.1123"/>
      <bbk:Obs TIME_PERIOD="2006-03-22" OBS_VALUE="2.01897" BBK_DIFF_A="-0.03808"/>
      <bbk:Obs TIME_PERIOD="2006-03-21" OBS_VALUE="2.05705" BBK_DIFF_A="-0.09826"/>
      <bbk:Obs TIME_PERIOD="2006-03-20" OBS_VALUE="2.15531" BBK_DIFF_A="-0.10489"/>
      <bbk:Obs TIME_PERIOD="2006-03-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-03-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-03-17" OBS_VALUE="2.2602" BBK_DIFF_A="-0.01141"/>
      <bbk:Obs TIME_PERIOD="2006-03-16" OBS_VALUE="2.27161" BBK_DIFF_A="0.11169"/>
      <bbk:Obs TIME_PERIOD="2006-03-15" OBS_VALUE="2.15992" BBK_DIFF_A="0.04327"/>
      <bbk:Obs TIME_PERIOD="2006-03-14" OBS_VALUE="2.11665" BBK_DIFF_A="-0.21309"/>
      <bbk:Obs TIME_PERIOD="2006-03-13" OBS_VALUE="2.32974" BBK_DIFF_A="0.20266"/>
      <bbk:Obs TIME_PERIOD="2006-03-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-03-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-03-10" OBS_VALUE="2.12708" BBK_DIFF_A="0.01342"/>
      <bbk:Obs TIME_PERIOD="2006-03-09" OBS_VALUE="2.11366" BBK_DIFF_A="0.07212"/>
      <bbk:Obs TIME_PERIOD="2006-03-08" OBS_VALUE="2.04154" BBK_DIFF_A="0.10835"/>
      <bbk:Obs TIME_PERIOD="2006-03-07" OBS_VALUE="1.93319" BBK_DIFF_A="-0.05198"/>
      <bbk:Obs TIME_PERIOD="2006-03-06" OBS_VALUE="1.98517" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2006-03-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-03-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-03-03" OBS_VALUE="1.98517" BBK_DIFF_A="0.08357"/>
      <bbk:Obs TIME_PERIOD="2006-03-02" OBS_VALUE="1.9016" BBK_DIFF_A="-0.31685"/>
      <bbk:Obs TIME_PERIOD="2006-03-01" OBS_VALUE="2.21845" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2006-02-28" OBS_VALUE="2.21845" BBK_DIFF_A="-0.01125"/>
      <bbk:Obs TIME_PERIOD="2006-02-27" OBS_VALUE="2.2297" BBK_DIFF_A="-0.01386"/>
      <bbk:Obs TIME_PERIOD="2006-02-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-02-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-02-24" OBS_VALUE="2.24356" BBK_DIFF_A="0.21833"/>
      <bbk:Obs TIME_PERIOD="2006-02-23" OBS_VALUE="2.02523" BBK_DIFF_A="-0.49663"/>
      <bbk:Obs TIME_PERIOD="2006-02-22" OBS_VALUE="2.52186" BBK_DIFF_A="0.38165"/>
      <bbk:Obs TIME_PERIOD="2006-02-21" OBS_VALUE="2.14021" BBK_DIFF_A="-0.35184"/>
      <bbk:Obs TIME_PERIOD="2006-02-20" OBS_VALUE="2.49205" BBK_DIFF_A="0.3798"/>
      <bbk:Obs TIME_PERIOD="2006-02-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-02-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-02-17" OBS_VALUE="2.11225" BBK_DIFF_A="-0.05502"/>
      <bbk:Obs TIME_PERIOD="2006-02-16" OBS_VALUE="2.16727" BBK_DIFF_A="0.10785"/>
      <bbk:Obs TIME_PERIOD="2006-02-15" OBS_VALUE="2.05942" BBK_DIFF_A="0.06974"/>
      <bbk:Obs TIME_PERIOD="2006-02-14" OBS_VALUE="1.98968" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2006-02-13" OBS_VALUE="1.98968" BBK_DIFF_A="-0.05799"/>
      <bbk:Obs TIME_PERIOD="2006-02-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-02-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-02-10" OBS_VALUE="2.04767" BBK_DIFF_A="0.11014"/>
      <bbk:Obs TIME_PERIOD="2006-02-09" OBS_VALUE="1.93753" BBK_DIFF_A="-0.02913"/>
      <bbk:Obs TIME_PERIOD="2006-02-08" OBS_VALUE="1.96666" BBK_DIFF_A="-0.17931"/>
      <bbk:Obs TIME_PERIOD="2006-02-07" OBS_VALUE="2.14597" BBK_DIFF_A="-0.58599"/>
      <bbk:Obs TIME_PERIOD="2006-02-06" OBS_VALUE="2.73196" BBK_DIFF_A="0.86757"/>
      <bbk:Obs TIME_PERIOD="2006-02-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-02-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-02-03" OBS_VALUE="1.86439" BBK_DIFF_A="-0.17972"/>
      <bbk:Obs TIME_PERIOD="2006-02-02" OBS_VALUE="2.04411" BBK_DIFF_A="-0.1465"/>
      <bbk:Obs TIME_PERIOD="2006-02-01" OBS_VALUE="2.19061" BBK_DIFF_A="-0.29672"/>
      <bbk:Obs TIME_PERIOD="2006-01-31" OBS_VALUE="2.48733" BBK_DIFF_A="0.27116"/>
      <bbk:Obs TIME_PERIOD="2006-01-30" OBS_VALUE="2.21617" BBK_DIFF_A="0.00173"/>
      <bbk:Obs TIME_PERIOD="2006-01-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-01-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-01-27" OBS_VALUE="2.21444" BBK_DIFF_A="0.03662"/>
      <bbk:Obs TIME_PERIOD="2006-01-26" OBS_VALUE="2.17782" BBK_DIFF_A="-0.07126"/>
      <bbk:Obs TIME_PERIOD="2006-01-25" OBS_VALUE="2.24908" BBK_DIFF_A="0.02489"/>
      <bbk:Obs TIME_PERIOD="2006-01-24" OBS_VALUE="2.22419" BBK_DIFF_A="0.03285"/>
      <bbk:Obs TIME_PERIOD="2006-01-23" OBS_VALUE="2.19134" BBK_DIFF_A="1.40612"/>
      <bbk:Obs TIME_PERIOD="2006-01-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-01-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-01-20" OBS_VALUE="0.78522" BBK_DIFF_A="-1.40859"/>
      <bbk:Obs TIME_PERIOD="2006-01-19" OBS_VALUE="2.19381" BBK_DIFF_A="0.09413"/>
      <bbk:Obs TIME_PERIOD="2006-01-18" OBS_VALUE="2.09968" BBK_DIFF_A="-0.0252"/>
      <bbk:Obs TIME_PERIOD="2006-01-17" OBS_VALUE="2.12488" BBK_DIFF_A="0.02322"/>
      <bbk:Obs TIME_PERIOD="2006-01-16" OBS_VALUE="2.10166" BBK_DIFF_A="-0.75887"/>
      <bbk:Obs TIME_PERIOD="2006-01-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-01-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-01-13" OBS_VALUE="2.86053" BBK_DIFF_A="2.7596"/>
      <bbk:Obs TIME_PERIOD="2006-01-12" OBS_VALUE="0.10093" BBK_DIFF_A="-0.33497"/>
      <bbk:Obs TIME_PERIOD="2006-01-11" OBS_VALUE="0.4359" BBK_DIFF_A="-2.44904"/>
      <bbk:Obs TIME_PERIOD="2006-01-10" OBS_VALUE="2.88494" BBK_DIFF_A="1.01637"/>
      <bbk:Obs TIME_PERIOD="2006-01-09" OBS_VALUE="1.86857" BBK_DIFF_A="-0.21393"/>
      <bbk:Obs TIME_PERIOD="2006-01-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-01-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2006-01-06" OBS_VALUE="2.0825" BBK_DIFF_A="-0.72845"/>
      <bbk:Obs TIME_PERIOD="2006-01-05" OBS_VALUE="2.81095" BBK_DIFF_A="0.63346"/>
      <bbk:Obs TIME_PERIOD="2006-01-04" OBS_VALUE="2.17749" BBK_DIFF_A="1.31886"/>
      <bbk:Obs TIME_PERIOD="2006-01-03" OBS_VALUE="0.85863" BBK_DIFF_A="0.74956"/>
      <bbk:Obs TIME_PERIOD="2006-01-02" OBS_VALUE="0.10907" BBK_DIFF_A="-0.04093"/>
      <bbk:Obs TIME_PERIOD="2006-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-12-30" OBS_VALUE="0.15" BBK_DIFF_A="-2.67471"/>
      <bbk:Obs TIME_PERIOD="2005-12-29" OBS_VALUE="2.82471" BBK_DIFF_A="0.56634"/>
      <bbk:Obs TIME_PERIOD="2005-12-28" OBS_VALUE="2.25837" BBK_DIFF_A="0.10171"/>
      <bbk:Obs TIME_PERIOD="2005-12-27" OBS_VALUE="2.15666" BBK_DIFF_A="-0.68639"/>
      <bbk:Obs TIME_PERIOD="2005-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-12-23" OBS_VALUE="2.84305" BBK_DIFF_A="-0.05347"/>
      <bbk:Obs TIME_PERIOD="2005-12-22" OBS_VALUE="2.89652" BBK_DIFF_A="0.64947"/>
      <bbk:Obs TIME_PERIOD="2005-12-21" OBS_VALUE="2.24705" BBK_DIFF_A="0.15733"/>
      <bbk:Obs TIME_PERIOD="2005-12-20" OBS_VALUE="2.08972" BBK_DIFF_A="-0.36148"/>
      <bbk:Obs TIME_PERIOD="2005-12-19" OBS_VALUE="2.4512" BBK_DIFF_A="0.79516"/>
      <bbk:Obs TIME_PERIOD="2005-12-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-12-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-12-16" OBS_VALUE="1.65604" BBK_DIFF_A="-0.0292"/>
      <bbk:Obs TIME_PERIOD="2005-12-15" OBS_VALUE="1.68524" BBK_DIFF_A="-0.5304"/>
      <bbk:Obs TIME_PERIOD="2005-12-14" OBS_VALUE="2.21564" BBK_DIFF_A="-0.03038"/>
      <bbk:Obs TIME_PERIOD="2005-12-13" OBS_VALUE="2.24602" BBK_DIFF_A="0.16864"/>
      <bbk:Obs TIME_PERIOD="2005-12-12" OBS_VALUE="2.07738" BBK_DIFF_A="-1.32434"/>
      <bbk:Obs TIME_PERIOD="2005-12-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-12-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-12-09" OBS_VALUE="3.40172" BBK_DIFF_A="3.40162"/>
      <bbk:Obs TIME_PERIOD="2005-12-08" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.53778"/>
      <bbk:Obs TIME_PERIOD="2005-12-07" OBS_VALUE="0.53788" BBK_DIFF_A="-0.4307"/>
      <bbk:Obs TIME_PERIOD="2005-12-06" OBS_VALUE="0.96858" BBK_DIFF_A="0.90946"/>
      <bbk:Obs TIME_PERIOD="2005-12-05" OBS_VALUE="0.05912" BBK_DIFF_A="-0.12836"/>
      <bbk:Obs TIME_PERIOD="2005-12-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-12-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-12-02" OBS_VALUE="0.18748" BBK_DIFF_A="-2.25787"/>
      <bbk:Obs TIME_PERIOD="2005-12-01" OBS_VALUE="2.44535" BBK_DIFF_A="2.37779"/>
      <bbk:Obs TIME_PERIOD="2005-11-30" OBS_VALUE="0.06756" BBK_DIFF_A="0.05871"/>
      <bbk:Obs TIME_PERIOD="2005-11-29" OBS_VALUE="0.00885" BBK_DIFF_A="-0.69515"/>
      <bbk:Obs TIME_PERIOD="2005-11-28" OBS_VALUE="0.704" BBK_DIFF_A="-6.75901"/>
      <bbk:Obs TIME_PERIOD="2005-11-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-11-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-11-25" OBS_VALUE="7.46301" BBK_DIFF_A="6.41513"/>
      <bbk:Obs TIME_PERIOD="2005-11-24" OBS_VALUE="1.04788" BBK_DIFF_A="-2.46432"/>
      <bbk:Obs TIME_PERIOD="2005-11-23" OBS_VALUE="3.5122" BBK_DIFF_A="1.556"/>
      <bbk:Obs TIME_PERIOD="2005-11-22" OBS_VALUE="1.9562" BBK_DIFF_A="0.15466"/>
      <bbk:Obs TIME_PERIOD="2005-11-21" OBS_VALUE="1.80154" BBK_DIFF_A="-1.62831"/>
      <bbk:Obs TIME_PERIOD="2005-11-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-11-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-11-18" OBS_VALUE="3.42985" BBK_DIFF_A="-0.06882"/>
      <bbk:Obs TIME_PERIOD="2005-11-17" OBS_VALUE="3.49867" BBK_DIFF_A="0.01624"/>
      <bbk:Obs TIME_PERIOD="2005-11-16" OBS_VALUE="3.48243" BBK_DIFF_A="1.79463"/>
      <bbk:Obs TIME_PERIOD="2005-11-15" OBS_VALUE="1.6878" BBK_DIFF_A="-0.39921"/>
      <bbk:Obs TIME_PERIOD="2005-11-14" OBS_VALUE="2.08701" BBK_DIFF_A="-0.51278"/>
      <bbk:Obs TIME_PERIOD="2005-11-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-11-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-11-11" OBS_VALUE="2.59979" BBK_DIFF_A="0.93661"/>
      <bbk:Obs TIME_PERIOD="2005-11-10" OBS_VALUE="1.66318" BBK_DIFF_A="-0.40762"/>
      <bbk:Obs TIME_PERIOD="2005-11-09" OBS_VALUE="2.0708" BBK_DIFF_A="0.34545"/>
      <bbk:Obs TIME_PERIOD="2005-11-08" OBS_VALUE="1.72535" BBK_DIFF_A="-0.12386"/>
      <bbk:Obs TIME_PERIOD="2005-11-07" OBS_VALUE="1.84921" BBK_DIFF_A="-1.49203"/>
      <bbk:Obs TIME_PERIOD="2005-11-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-11-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-11-04" OBS_VALUE="3.34124" BBK_DIFF_A="-0.02447"/>
      <bbk:Obs TIME_PERIOD="2005-11-03" OBS_VALUE="3.36571" BBK_DIFF_A="-0.04028"/>
      <bbk:Obs TIME_PERIOD="2005-11-02" OBS_VALUE="3.40599" BBK_DIFF_A="-0.1206"/>
      <bbk:Obs TIME_PERIOD="2005-11-01" OBS_VALUE="3.52659" BBK_DIFF_A="-0.0153"/>
      <bbk:Obs TIME_PERIOD="2005-10-31" OBS_VALUE="3.54189" BBK_DIFF_A="-0.03124"/>
      <bbk:Obs TIME_PERIOD="2005-10-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-10-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-10-28" OBS_VALUE="3.57313" BBK_DIFF_A="0.0854"/>
      <bbk:Obs TIME_PERIOD="2005-10-27" OBS_VALUE="3.48773" BBK_DIFF_A="-0.05466"/>
      <bbk:Obs TIME_PERIOD="2005-10-26" OBS_VALUE="3.54239" BBK_DIFF_A="-0.08848"/>
      <bbk:Obs TIME_PERIOD="2005-10-25" OBS_VALUE="3.63087" BBK_DIFF_A="-10.98309"/>
      <bbk:Obs TIME_PERIOD="2005-10-24" OBS_VALUE="14.61396" BBK_DIFF_A="10.78482"/>
      <bbk:Obs TIME_PERIOD="2005-10-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-10-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-10-21" OBS_VALUE="3.82914" BBK_DIFF_A="3.02851"/>
      <bbk:Obs TIME_PERIOD="2005-10-20" OBS_VALUE="0.80063" BBK_DIFF_A="0.80053"/>
      <bbk:Obs TIME_PERIOD="2005-10-19" OBS_VALUE="1.0E-4" BBK_DIFF_A="-4.90031"/>
      <bbk:Obs TIME_PERIOD="2005-10-18" OBS_VALUE="4.90041" BBK_DIFF_A="0.26378"/>
      <bbk:Obs TIME_PERIOD="2005-10-17" OBS_VALUE="4.63663" BBK_DIFF_A="3.51336"/>
      <bbk:Obs TIME_PERIOD="2005-10-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-10-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-10-14" OBS_VALUE="1.12327" BBK_DIFF_A="0.28207"/>
      <bbk:Obs TIME_PERIOD="2005-10-13" OBS_VALUE="0.8412" BBK_DIFF_A="0.10787"/>
      <bbk:Obs TIME_PERIOD="2005-10-12" OBS_VALUE="0.73333" BBK_DIFF_A="-0.21185"/>
      <bbk:Obs TIME_PERIOD="2005-10-11" OBS_VALUE="0.94518" BBK_DIFF_A="-22.94094"/>
      <bbk:Obs TIME_PERIOD="2005-10-10" OBS_VALUE="23.88612" BBK_DIFF_A="22.74702"/>
      <bbk:Obs TIME_PERIOD="2005-10-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-10-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-10-07" OBS_VALUE="1.1391" BBK_DIFF_A="-2.93306"/>
      <bbk:Obs TIME_PERIOD="2005-10-06" OBS_VALUE="4.07216" BBK_DIFF_A="0.47459"/>
      <bbk:Obs TIME_PERIOD="2005-10-05" OBS_VALUE="3.59757" BBK_DIFF_A="-0.1885"/>
      <bbk:Obs TIME_PERIOD="2005-10-04" OBS_VALUE="3.78607" BBK_DIFF_A="-0.09743"/>
      <bbk:Obs TIME_PERIOD="2005-10-03" OBS_VALUE="3.8835" BBK_DIFF_A="-1.14749"/>
      <bbk:Obs TIME_PERIOD="2005-10-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-10-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-09-30" OBS_VALUE="5.03099" BBK_DIFF_A="1.31153"/>
      <bbk:Obs TIME_PERIOD="2005-09-29" OBS_VALUE="3.71946" BBK_DIFF_A="1.45047"/>
      <bbk:Obs TIME_PERIOD="2005-09-28" OBS_VALUE="2.26899" BBK_DIFF_A="0.14532"/>
      <bbk:Obs TIME_PERIOD="2005-09-27" OBS_VALUE="2.12367" BBK_DIFF_A="2.12357"/>
      <bbk:Obs TIME_PERIOD="2005-09-26" OBS_VALUE="1.0E-4" BBK_DIFF_A="-2.21014"/>
      <bbk:Obs TIME_PERIOD="2005-09-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-09-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-09-23" OBS_VALUE="2.21024" BBK_DIFF_A="-0.93655"/>
      <bbk:Obs TIME_PERIOD="2005-09-22" OBS_VALUE="3.14679" BBK_DIFF_A="3.1024"/>
      <bbk:Obs TIME_PERIOD="2005-09-21" OBS_VALUE="0.04439" BBK_DIFF_A="-0.04937"/>
      <bbk:Obs TIME_PERIOD="2005-09-20" OBS_VALUE="0.09376" BBK_DIFF_A="-2.46702"/>
      <bbk:Obs TIME_PERIOD="2005-09-19" OBS_VALUE="2.56078" BBK_DIFF_A="1.51212"/>
      <bbk:Obs TIME_PERIOD="2005-09-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-09-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-09-16" OBS_VALUE="1.04866" BBK_DIFF_A="-1.67378"/>
      <bbk:Obs TIME_PERIOD="2005-09-15" OBS_VALUE="2.72244" BBK_DIFF_A="0.98039"/>
      <bbk:Obs TIME_PERIOD="2005-09-14" OBS_VALUE="1.74205" BBK_DIFF_A="0.45084"/>
      <bbk:Obs TIME_PERIOD="2005-09-13" OBS_VALUE="1.29121" BBK_DIFF_A="-0.41047"/>
      <bbk:Obs TIME_PERIOD="2005-09-12" OBS_VALUE="1.70168" BBK_DIFF_A="-2.01841"/>
      <bbk:Obs TIME_PERIOD="2005-09-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-09-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-09-09" OBS_VALUE="3.72009" BBK_DIFF_A="1.5189"/>
      <bbk:Obs TIME_PERIOD="2005-09-08" OBS_VALUE="2.20119" BBK_DIFF_A="-0.39134"/>
      <bbk:Obs TIME_PERIOD="2005-09-07" OBS_VALUE="2.59253" BBK_DIFF_A="1.87544"/>
      <bbk:Obs TIME_PERIOD="2005-09-06" OBS_VALUE="0.71709" BBK_DIFF_A="-1.77455"/>
      <bbk:Obs TIME_PERIOD="2005-09-05" OBS_VALUE="2.49164" BBK_DIFF_A="-0.29714"/>
      <bbk:Obs TIME_PERIOD="2005-09-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-09-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-09-02" OBS_VALUE="2.78878" BBK_DIFF_A="-0.05703"/>
      <bbk:Obs TIME_PERIOD="2005-09-01" OBS_VALUE="2.84581" BBK_DIFF_A="-3.61307"/>
      <bbk:Obs TIME_PERIOD="2005-08-31" OBS_VALUE="6.45888" BBK_DIFF_A="4.1517"/>
      <bbk:Obs TIME_PERIOD="2005-08-30" OBS_VALUE="2.30718" BBK_DIFF_A="0.77752"/>
      <bbk:Obs TIME_PERIOD="2005-08-29" OBS_VALUE="1.52966" BBK_DIFF_A="-0.24134"/>
      <bbk:Obs TIME_PERIOD="2005-08-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-08-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-08-26" OBS_VALUE="1.771" BBK_DIFF_A="-1.05045"/>
      <bbk:Obs TIME_PERIOD="2005-08-25" OBS_VALUE="2.82145" BBK_DIFF_A="1.42723"/>
      <bbk:Obs TIME_PERIOD="2005-08-24" OBS_VALUE="1.39422" BBK_DIFF_A="-10.17153"/>
      <bbk:Obs TIME_PERIOD="2005-08-23" OBS_VALUE="11.56575" BBK_DIFF_A="7.99777"/>
      <bbk:Obs TIME_PERIOD="2005-08-22" OBS_VALUE="3.56798" BBK_DIFF_A="0.28018"/>
      <bbk:Obs TIME_PERIOD="2005-08-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-08-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-08-19" OBS_VALUE="3.2878" BBK_DIFF_A="0.25632"/>
      <bbk:Obs TIME_PERIOD="2005-08-18" OBS_VALUE="3.03148" BBK_DIFF_A="-0.21893"/>
      <bbk:Obs TIME_PERIOD="2005-08-17" OBS_VALUE="3.25041" BBK_DIFF_A="1.81132"/>
      <bbk:Obs TIME_PERIOD="2005-08-16" OBS_VALUE="1.43909" BBK_DIFF_A="-0.28789"/>
      <bbk:Obs TIME_PERIOD="2005-08-15" OBS_VALUE="1.72698" BBK_DIFF_A="-0.4223"/>
      <bbk:Obs TIME_PERIOD="2005-08-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-08-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-08-12" OBS_VALUE="2.14928" BBK_DIFF_A="-0.77994"/>
      <bbk:Obs TIME_PERIOD="2005-08-11" OBS_VALUE="2.92922" BBK_DIFF_A="-0.06791"/>
      <bbk:Obs TIME_PERIOD="2005-08-10" OBS_VALUE="2.99713" BBK_DIFF_A="0.06853"/>
      <bbk:Obs TIME_PERIOD="2005-08-09" OBS_VALUE="2.9286" BBK_DIFF_A="-0.7706"/>
      <bbk:Obs TIME_PERIOD="2005-08-08" OBS_VALUE="3.6992" BBK_DIFF_A="0.72126"/>
      <bbk:Obs TIME_PERIOD="2005-08-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-08-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-08-05" OBS_VALUE="2.97794" BBK_DIFF_A="-1.35327"/>
      <bbk:Obs TIME_PERIOD="2005-08-04" OBS_VALUE="4.33121" BBK_DIFF_A="1.55803"/>
      <bbk:Obs TIME_PERIOD="2005-08-03" OBS_VALUE="2.77318" BBK_DIFF_A="-0.29188"/>
      <bbk:Obs TIME_PERIOD="2005-08-02" OBS_VALUE="3.06506" BBK_DIFF_A="-0.11909"/>
      <bbk:Obs TIME_PERIOD="2005-08-01" OBS_VALUE="3.18415" BBK_DIFF_A="-0.37569"/>
      <bbk:Obs TIME_PERIOD="2005-07-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-07-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-07-29" OBS_VALUE="3.55984" BBK_DIFF_A="0.04601"/>
      <bbk:Obs TIME_PERIOD="2005-07-28" OBS_VALUE="3.51383" BBK_DIFF_A="0.38912"/>
      <bbk:Obs TIME_PERIOD="2005-07-27" OBS_VALUE="3.12471" BBK_DIFF_A="0.08447"/>
      <bbk:Obs TIME_PERIOD="2005-07-26" OBS_VALUE="3.04024" BBK_DIFF_A="0.20112"/>
      <bbk:Obs TIME_PERIOD="2005-07-25" OBS_VALUE="2.83912" BBK_DIFF_A="-0.20432"/>
      <bbk:Obs TIME_PERIOD="2005-07-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-07-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-07-22" OBS_VALUE="3.04344" BBK_DIFF_A="0.60786"/>
      <bbk:Obs TIME_PERIOD="2005-07-21" OBS_VALUE="2.43558" BBK_DIFF_A="-0.77031"/>
      <bbk:Obs TIME_PERIOD="2005-07-20" OBS_VALUE="3.20589" BBK_DIFF_A="-0.12329"/>
      <bbk:Obs TIME_PERIOD="2005-07-19" OBS_VALUE="3.32918" BBK_DIFF_A="0.15453"/>
      <bbk:Obs TIME_PERIOD="2005-07-18" OBS_VALUE="3.17465" BBK_DIFF_A="-0.28631"/>
      <bbk:Obs TIME_PERIOD="2005-07-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-07-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-07-15" OBS_VALUE="3.46096" BBK_DIFF_A="0.03077"/>
      <bbk:Obs TIME_PERIOD="2005-07-14" OBS_VALUE="3.43019" BBK_DIFF_A="1.10391"/>
      <bbk:Obs TIME_PERIOD="2005-07-13" OBS_VALUE="2.32628" BBK_DIFF_A="-0.68217"/>
      <bbk:Obs TIME_PERIOD="2005-07-12" OBS_VALUE="3.00845" BBK_DIFF_A="0.11312"/>
      <bbk:Obs TIME_PERIOD="2005-07-11" OBS_VALUE="2.89533" BBK_DIFF_A="0.24216"/>
      <bbk:Obs TIME_PERIOD="2005-07-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-07-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-07-08" OBS_VALUE="2.65317" BBK_DIFF_A="0.60322"/>
      <bbk:Obs TIME_PERIOD="2005-07-07" OBS_VALUE="2.04995" BBK_DIFF_A="-0.75539"/>
      <bbk:Obs TIME_PERIOD="2005-07-06" OBS_VALUE="2.80534" BBK_DIFF_A="-0.09643"/>
      <bbk:Obs TIME_PERIOD="2005-07-05" OBS_VALUE="2.90177" BBK_DIFF_A="1.79806"/>
      <bbk:Obs TIME_PERIOD="2005-07-04" OBS_VALUE="1.10371" BBK_DIFF_A="-0.91359"/>
      <bbk:Obs TIME_PERIOD="2005-07-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-07-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-07-01" OBS_VALUE="2.0173" BBK_DIFF_A="0.02188"/>
      <bbk:Obs TIME_PERIOD="2005-06-30" OBS_VALUE="1.99542" BBK_DIFF_A="0.06947"/>
      <bbk:Obs TIME_PERIOD="2005-06-29" OBS_VALUE="1.92595" BBK_DIFF_A="0.05348"/>
      <bbk:Obs TIME_PERIOD="2005-06-28" OBS_VALUE="1.87247" BBK_DIFF_A="0.06361"/>
      <bbk:Obs TIME_PERIOD="2005-06-27" OBS_VALUE="1.80886" BBK_DIFF_A="-0.04888"/>
      <bbk:Obs TIME_PERIOD="2005-06-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-06-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-06-24" OBS_VALUE="1.85774" BBK_DIFF_A="0.13406"/>
      <bbk:Obs TIME_PERIOD="2005-06-23" OBS_VALUE="1.72368" BBK_DIFF_A="0.05058"/>
      <bbk:Obs TIME_PERIOD="2005-06-22" OBS_VALUE="1.6731" BBK_DIFF_A="-0.40384"/>
      <bbk:Obs TIME_PERIOD="2005-06-21" OBS_VALUE="2.07694" BBK_DIFF_A="0.24899"/>
      <bbk:Obs TIME_PERIOD="2005-06-20" OBS_VALUE="1.82795" BBK_DIFF_A="0.20999"/>
      <bbk:Obs TIME_PERIOD="2005-06-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-06-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-06-17" OBS_VALUE="1.61796" BBK_DIFF_A="-0.87889"/>
      <bbk:Obs TIME_PERIOD="2005-06-16" OBS_VALUE="2.49685" BBK_DIFF_A="-0.30294"/>
      <bbk:Obs TIME_PERIOD="2005-06-15" OBS_VALUE="2.79979" BBK_DIFF_A="0.66178"/>
      <bbk:Obs TIME_PERIOD="2005-06-14" OBS_VALUE="2.13801" BBK_DIFF_A="0.13793"/>
      <bbk:Obs TIME_PERIOD="2005-06-13" OBS_VALUE="2.00008" BBK_DIFF_A="-0.43964"/>
      <bbk:Obs TIME_PERIOD="2005-06-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-06-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-06-10" OBS_VALUE="2.43972" BBK_DIFF_A="0.41671"/>
      <bbk:Obs TIME_PERIOD="2005-06-09" OBS_VALUE="2.02301" BBK_DIFF_A="0.02975"/>
      <bbk:Obs TIME_PERIOD="2005-06-08" OBS_VALUE="1.99326" BBK_DIFF_A="-0.41159"/>
      <bbk:Obs TIME_PERIOD="2005-06-07" OBS_VALUE="2.40485" BBK_DIFF_A="-0.15834"/>
      <bbk:Obs TIME_PERIOD="2005-06-06" OBS_VALUE="2.56319" BBK_DIFF_A="-0.35514"/>
      <bbk:Obs TIME_PERIOD="2005-06-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-06-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-06-03" OBS_VALUE="2.91833" BBK_DIFF_A="0.67665"/>
      <bbk:Obs TIME_PERIOD="2005-06-02" OBS_VALUE="2.24168" BBK_DIFF_A="-0.14721"/>
      <bbk:Obs TIME_PERIOD="2005-06-01" OBS_VALUE="2.38889" BBK_DIFF_A="-0.99689"/>
      <bbk:Obs TIME_PERIOD="2005-05-31" OBS_VALUE="3.38578" BBK_DIFF_A="1.05233"/>
      <bbk:Obs TIME_PERIOD="2005-05-30" OBS_VALUE="2.33345" BBK_DIFF_A="-0.45768"/>
      <bbk:Obs TIME_PERIOD="2005-05-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-05-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-05-27" OBS_VALUE="2.79113" BBK_DIFF_A="-0.3101"/>
      <bbk:Obs TIME_PERIOD="2005-05-26" OBS_VALUE="3.10123" BBK_DIFF_A="-0.06601"/>
      <bbk:Obs TIME_PERIOD="2005-05-25" OBS_VALUE="3.16724" BBK_DIFF_A="1.92052"/>
      <bbk:Obs TIME_PERIOD="2005-05-24" OBS_VALUE="1.24672" BBK_DIFF_A="-1.49717"/>
      <bbk:Obs TIME_PERIOD="2005-05-23" OBS_VALUE="2.74389" BBK_DIFF_A="1.16284"/>
      <bbk:Obs TIME_PERIOD="2005-05-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-05-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-05-20" OBS_VALUE="1.58105" BBK_DIFF_A="-1.16228"/>
      <bbk:Obs TIME_PERIOD="2005-05-19" OBS_VALUE="2.74333" BBK_DIFF_A="-0.71792"/>
      <bbk:Obs TIME_PERIOD="2005-05-18" OBS_VALUE="3.46125" BBK_DIFF_A="0.09378"/>
      <bbk:Obs TIME_PERIOD="2005-05-17" OBS_VALUE="3.36747" BBK_DIFF_A="0.03934"/>
      <bbk:Obs TIME_PERIOD="2005-05-16" OBS_VALUE="3.32813" BBK_DIFF_A="-0.20792"/>
      <bbk:Obs TIME_PERIOD="2005-05-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-05-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-05-13" OBS_VALUE="3.53605" BBK_DIFF_A="0.19461"/>
      <bbk:Obs TIME_PERIOD="2005-05-12" OBS_VALUE="3.34144" BBK_DIFF_A="1.05748"/>
      <bbk:Obs TIME_PERIOD="2005-05-11" OBS_VALUE="2.28396" BBK_DIFF_A="-0.12834"/>
      <bbk:Obs TIME_PERIOD="2005-05-10" OBS_VALUE="2.4123" BBK_DIFF_A="0.00119"/>
      <bbk:Obs TIME_PERIOD="2005-05-09" OBS_VALUE="2.41111" BBK_DIFF_A="-0.31354"/>
      <bbk:Obs TIME_PERIOD="2005-05-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-05-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-05-06" OBS_VALUE="2.72465" BBK_DIFF_A="-1.27602"/>
      <bbk:Obs TIME_PERIOD="2005-05-05" OBS_VALUE="4.00067" BBK_DIFF_A="1.18224"/>
      <bbk:Obs TIME_PERIOD="2005-05-04" OBS_VALUE="2.81843" BBK_DIFF_A="0.11885"/>
      <bbk:Obs TIME_PERIOD="2005-05-03" OBS_VALUE="2.69958" BBK_DIFF_A="-0.08346"/>
      <bbk:Obs TIME_PERIOD="2005-05-02" OBS_VALUE="2.78304" BBK_DIFF_A="2.16224"/>
      <bbk:Obs TIME_PERIOD="2005-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-04-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-04-29" OBS_VALUE="0.6208" BBK_DIFF_A="0.6207"/>
      <bbk:Obs TIME_PERIOD="2005-04-28" OBS_VALUE="1.0E-4" BBK_DIFF_A="-4.3954"/>
      <bbk:Obs TIME_PERIOD="2005-04-27" OBS_VALUE="4.3955" BBK_DIFF_A="0.0282"/>
      <bbk:Obs TIME_PERIOD="2005-04-26" OBS_VALUE="4.3673" BBK_DIFF_A="0.11656"/>
      <bbk:Obs TIME_PERIOD="2005-04-25" OBS_VALUE="4.25074" BBK_DIFF_A="3.53519"/>
      <bbk:Obs TIME_PERIOD="2005-04-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-04-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-04-22" OBS_VALUE="0.71555" BBK_DIFF_A="-3.68407"/>
      <bbk:Obs TIME_PERIOD="2005-04-21" OBS_VALUE="4.39962" BBK_DIFF_A="0.38969"/>
      <bbk:Obs TIME_PERIOD="2005-04-20" OBS_VALUE="4.00993" BBK_DIFF_A="2.18911"/>
      <bbk:Obs TIME_PERIOD="2005-04-19" OBS_VALUE="1.82082" BBK_DIFF_A="-2.06274"/>
      <bbk:Obs TIME_PERIOD="2005-04-18" OBS_VALUE="3.88356" BBK_DIFF_A="3.46009"/>
      <bbk:Obs TIME_PERIOD="2005-04-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-04-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-04-15" OBS_VALUE="0.42347" BBK_DIFF_A="-2.01261"/>
      <bbk:Obs TIME_PERIOD="2005-04-14" OBS_VALUE="2.43608" BBK_DIFF_A="-0.10535"/>
      <bbk:Obs TIME_PERIOD="2005-04-13" OBS_VALUE="2.54143" BBK_DIFF_A="-0.08449"/>
      <bbk:Obs TIME_PERIOD="2005-04-12" OBS_VALUE="2.62592" BBK_DIFF_A="0.15114"/>
      <bbk:Obs TIME_PERIOD="2005-04-11" OBS_VALUE="2.47478" BBK_DIFF_A="-0.40711"/>
      <bbk:Obs TIME_PERIOD="2005-04-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-04-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-04-08" OBS_VALUE="2.88189" BBK_DIFF_A="-14.72412"/>
      <bbk:Obs TIME_PERIOD="2005-04-07" OBS_VALUE="17.60601" BBK_DIFF_A="15.29117"/>
      <bbk:Obs TIME_PERIOD="2005-04-06" OBS_VALUE="2.31484" BBK_DIFF_A="-0.2531"/>
      <bbk:Obs TIME_PERIOD="2005-04-05" OBS_VALUE="2.56794" BBK_DIFF_A="-0.4169"/>
      <bbk:Obs TIME_PERIOD="2005-04-04" OBS_VALUE="2.98484" BBK_DIFF_A="-0.13743"/>
      <bbk:Obs TIME_PERIOD="2005-04-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-04-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-04-01" OBS_VALUE="3.12227" BBK_DIFF_A="3.12217"/>
      <bbk:Obs TIME_PERIOD="2005-03-31" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.00992"/>
      <bbk:Obs TIME_PERIOD="2005-03-30" OBS_VALUE="0.01002" BBK_DIFF_A="-0.65378"/>
      <bbk:Obs TIME_PERIOD="2005-03-29" OBS_VALUE="0.6638" BBK_DIFF_A="0.6637"/>
      <bbk:Obs TIME_PERIOD="2005-03-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-03-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-03-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-03-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-03-24" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2005-03-23" OBS_VALUE="1.0E-4" BBK_DIFF_A="-2.68039"/>
      <bbk:Obs TIME_PERIOD="2005-03-22" OBS_VALUE="2.68049" BBK_DIFF_A="-0.93369"/>
      <bbk:Obs TIME_PERIOD="2005-03-21" OBS_VALUE="3.61418" BBK_DIFF_A="-6.79303"/>
      <bbk:Obs TIME_PERIOD="2005-03-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-03-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-03-18" OBS_VALUE="10.40721" BBK_DIFF_A="6.92264"/>
      <bbk:Obs TIME_PERIOD="2005-03-17" OBS_VALUE="3.48457" BBK_DIFF_A="0.5031"/>
      <bbk:Obs TIME_PERIOD="2005-03-16" OBS_VALUE="2.98147" BBK_DIFF_A="-0.25488"/>
      <bbk:Obs TIME_PERIOD="2005-03-15" OBS_VALUE="3.23635" BBK_DIFF_A="-0.01462"/>
      <bbk:Obs TIME_PERIOD="2005-03-14" OBS_VALUE="3.25097" BBK_DIFF_A="4.8E-4"/>
      <bbk:Obs TIME_PERIOD="2005-03-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-03-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-03-11" OBS_VALUE="3.25049" BBK_DIFF_A="1.2879"/>
      <bbk:Obs TIME_PERIOD="2005-03-10" OBS_VALUE="1.96259" BBK_DIFF_A="-0.43265"/>
      <bbk:Obs TIME_PERIOD="2005-03-09" OBS_VALUE="2.39524" BBK_DIFF_A="-0.08926"/>
      <bbk:Obs TIME_PERIOD="2005-03-08" OBS_VALUE="2.4845" BBK_DIFF_A="0.00188"/>
      <bbk:Obs TIME_PERIOD="2005-03-07" OBS_VALUE="2.48262" BBK_DIFF_A="0.52496"/>
      <bbk:Obs TIME_PERIOD="2005-03-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-03-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-03-04" OBS_VALUE="1.95766" BBK_DIFF_A="-0.55783"/>
      <bbk:Obs TIME_PERIOD="2005-03-03" OBS_VALUE="2.51549" BBK_DIFF_A="0.8522"/>
      <bbk:Obs TIME_PERIOD="2005-03-02" OBS_VALUE="1.66329" BBK_DIFF_A="-1.08063"/>
      <bbk:Obs TIME_PERIOD="2005-03-01" OBS_VALUE="2.74392" BBK_DIFF_A="0.80396"/>
      <bbk:Obs TIME_PERIOD="2005-02-28" OBS_VALUE="1.93996" BBK_DIFF_A="-0.31366"/>
      <bbk:Obs TIME_PERIOD="2005-02-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-02-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-02-25" OBS_VALUE="2.25362" BBK_DIFF_A="0.19418"/>
      <bbk:Obs TIME_PERIOD="2005-02-24" OBS_VALUE="2.05944" BBK_DIFF_A="-2.62918"/>
      <bbk:Obs TIME_PERIOD="2005-02-23" OBS_VALUE="4.68862" BBK_DIFF_A="2.63069"/>
      <bbk:Obs TIME_PERIOD="2005-02-22" OBS_VALUE="2.05793" BBK_DIFF_A="-1.02907"/>
      <bbk:Obs TIME_PERIOD="2005-02-21" OBS_VALUE="3.087" BBK_DIFF_A="0.10704"/>
      <bbk:Obs TIME_PERIOD="2005-02-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-02-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-02-18" OBS_VALUE="2.97996" BBK_DIFF_A="0.178"/>
      <bbk:Obs TIME_PERIOD="2005-02-17" OBS_VALUE="2.80196" BBK_DIFF_A="-0.95343"/>
      <bbk:Obs TIME_PERIOD="2005-02-16" OBS_VALUE="3.75539" BBK_DIFF_A="0.58418"/>
      <bbk:Obs TIME_PERIOD="2005-02-15" OBS_VALUE="3.17121" BBK_DIFF_A="0.91306"/>
      <bbk:Obs TIME_PERIOD="2005-02-14" OBS_VALUE="2.25815" BBK_DIFF_A="0.38142"/>
      <bbk:Obs TIME_PERIOD="2005-02-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-02-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-02-11" OBS_VALUE="1.87673" BBK_DIFF_A="0.00148"/>
      <bbk:Obs TIME_PERIOD="2005-02-10" OBS_VALUE="1.87525" BBK_DIFF_A="0.04109"/>
      <bbk:Obs TIME_PERIOD="2005-02-09" OBS_VALUE="1.83416" BBK_DIFF_A="-1.52148"/>
      <bbk:Obs TIME_PERIOD="2005-02-08" OBS_VALUE="3.35564" BBK_DIFF_A="0.86279"/>
      <bbk:Obs TIME_PERIOD="2005-02-07" OBS_VALUE="2.49285" BBK_DIFF_A="-0.39035"/>
      <bbk:Obs TIME_PERIOD="2005-02-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-02-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-02-04" OBS_VALUE="2.8832" BBK_DIFF_A="0.68522"/>
      <bbk:Obs TIME_PERIOD="2005-02-03" OBS_VALUE="2.19798" BBK_DIFF_A="0.07477"/>
      <bbk:Obs TIME_PERIOD="2005-02-02" OBS_VALUE="2.12321" BBK_DIFF_A="0.08744"/>
      <bbk:Obs TIME_PERIOD="2005-02-01" OBS_VALUE="2.03577" BBK_DIFF_A="-0.76152"/>
      <bbk:Obs TIME_PERIOD="2005-01-31" OBS_VALUE="2.79729" BBK_DIFF_A="0.48114"/>
      <bbk:Obs TIME_PERIOD="2005-01-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-01-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-01-28" OBS_VALUE="2.31615" BBK_DIFF_A="0.16023"/>
      <bbk:Obs TIME_PERIOD="2005-01-27" OBS_VALUE="2.15592" BBK_DIFF_A="-0.22675"/>
      <bbk:Obs TIME_PERIOD="2005-01-26" OBS_VALUE="2.38267" BBK_DIFF_A="2.38257"/>
      <bbk:Obs TIME_PERIOD="2005-01-25" OBS_VALUE="1.0E-4" BBK_DIFF_A="-2.53487"/>
      <bbk:Obs TIME_PERIOD="2005-01-24" OBS_VALUE="2.53497" BBK_DIFF_A="-0.38407"/>
      <bbk:Obs TIME_PERIOD="2005-01-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-01-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-01-21" OBS_VALUE="2.91904" BBK_DIFF_A="-1.45312"/>
      <bbk:Obs TIME_PERIOD="2005-01-20" OBS_VALUE="4.37216" BBK_DIFF_A="-1.79132"/>
      <bbk:Obs TIME_PERIOD="2005-01-19" OBS_VALUE="6.16348" BBK_DIFF_A="1.89945"/>
      <bbk:Obs TIME_PERIOD="2005-01-18" OBS_VALUE="4.26403" BBK_DIFF_A="0.58722"/>
      <bbk:Obs TIME_PERIOD="2005-01-17" OBS_VALUE="3.67681" BBK_DIFF_A="0.43554"/>
      <bbk:Obs TIME_PERIOD="2005-01-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-01-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-01-14" OBS_VALUE="3.24127" BBK_DIFF_A="-0.44589"/>
      <bbk:Obs TIME_PERIOD="2005-01-13" OBS_VALUE="3.68716" BBK_DIFF_A="-2.83066"/>
      <bbk:Obs TIME_PERIOD="2005-01-12" OBS_VALUE="6.51782" BBK_DIFF_A="2.94429"/>
      <bbk:Obs TIME_PERIOD="2005-01-11" OBS_VALUE="3.57353" BBK_DIFF_A="0.2947"/>
      <bbk:Obs TIME_PERIOD="2005-01-10" OBS_VALUE="3.27883" BBK_DIFF_A="-0.07168"/>
      <bbk:Obs TIME_PERIOD="2005-01-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-01-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-01-07" OBS_VALUE="3.35051" BBK_DIFF_A="-8.38929"/>
      <bbk:Obs TIME_PERIOD="2005-01-06" OBS_VALUE="11.7398" BBK_DIFF_A="7.57052"/>
      <bbk:Obs TIME_PERIOD="2005-01-05" OBS_VALUE="4.16928" BBK_DIFF_A="4.16918"/>
      <bbk:Obs TIME_PERIOD="2005-01-04" OBS_VALUE="1.0E-4" BBK_DIFF_A="-3.7252"/>
      <bbk:Obs TIME_PERIOD="2005-01-03" OBS_VALUE="3.7253" BBK_DIFF_A="-3.78235"/>
      <bbk:Obs TIME_PERIOD="2005-01-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2005-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-12-30" OBS_VALUE="7.50765" BBK_DIFF_A="-1.27899"/>
      <bbk:Obs TIME_PERIOD="2004-12-29" OBS_VALUE="8.78664" BBK_DIFF_A="5.01211"/>
      <bbk:Obs TIME_PERIOD="2004-12-28" OBS_VALUE="3.77453" BBK_DIFF_A="0.81679"/>
      <bbk:Obs TIME_PERIOD="2004-12-27" OBS_VALUE="2.95774" BBK_DIFF_A="-0.8212"/>
      <bbk:Obs TIME_PERIOD="2004-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-12-23" OBS_VALUE="3.77894" BBK_DIFF_A="1.70358"/>
      <bbk:Obs TIME_PERIOD="2004-12-22" OBS_VALUE="2.07536" BBK_DIFF_A="-2.20411"/>
      <bbk:Obs TIME_PERIOD="2004-12-21" OBS_VALUE="4.27947" BBK_DIFF_A="-0.08205"/>
      <bbk:Obs TIME_PERIOD="2004-12-20" OBS_VALUE="4.36152" BBK_DIFF_A="0.07009"/>
      <bbk:Obs TIME_PERIOD="2004-12-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-12-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-12-17" OBS_VALUE="4.29143" BBK_DIFF_A="1.30802"/>
      <bbk:Obs TIME_PERIOD="2004-12-16" OBS_VALUE="2.98341" BBK_DIFF_A="-0.26267"/>
      <bbk:Obs TIME_PERIOD="2004-12-15" OBS_VALUE="3.24608" BBK_DIFF_A="0.44549"/>
      <bbk:Obs TIME_PERIOD="2004-12-14" OBS_VALUE="2.80059" BBK_DIFF_A="0.56231"/>
      <bbk:Obs TIME_PERIOD="2004-12-13" OBS_VALUE="2.23828" BBK_DIFF_A="-0.50594"/>
      <bbk:Obs TIME_PERIOD="2004-12-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-12-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-12-10" OBS_VALUE="2.74422" BBK_DIFF_A="0.6332"/>
      <bbk:Obs TIME_PERIOD="2004-12-09" OBS_VALUE="2.11102" BBK_DIFF_A="-0.20085"/>
      <bbk:Obs TIME_PERIOD="2004-12-08" OBS_VALUE="2.31187" BBK_DIFF_A="-0.05024"/>
      <bbk:Obs TIME_PERIOD="2004-12-07" OBS_VALUE="2.36211" BBK_DIFF_A="0.36103"/>
      <bbk:Obs TIME_PERIOD="2004-12-06" OBS_VALUE="2.00108" BBK_DIFF_A="-0.04408"/>
      <bbk:Obs TIME_PERIOD="2004-12-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-12-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-12-03" OBS_VALUE="2.04516" BBK_DIFF_A="0.0203"/>
      <bbk:Obs TIME_PERIOD="2004-12-02" OBS_VALUE="2.02486" BBK_DIFF_A="-0.37269"/>
      <bbk:Obs TIME_PERIOD="2004-12-01" OBS_VALUE="2.39755" BBK_DIFF_A="0.32032"/>
      <bbk:Obs TIME_PERIOD="2004-11-30" OBS_VALUE="2.07723" BBK_DIFF_A="-0.37133"/>
      <bbk:Obs TIME_PERIOD="2004-11-29" OBS_VALUE="2.44856" BBK_DIFF_A="0.03953"/>
      <bbk:Obs TIME_PERIOD="2004-11-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-11-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-11-26" OBS_VALUE="2.40903" BBK_DIFF_A="0.38417"/>
      <bbk:Obs TIME_PERIOD="2004-11-25" OBS_VALUE="2.02486" BBK_DIFF_A="-0.14358"/>
      <bbk:Obs TIME_PERIOD="2004-11-24" OBS_VALUE="2.16844" BBK_DIFF_A="0.1942"/>
      <bbk:Obs TIME_PERIOD="2004-11-23" OBS_VALUE="1.97424" BBK_DIFF_A="-0.45097"/>
      <bbk:Obs TIME_PERIOD="2004-11-22" OBS_VALUE="2.42521" BBK_DIFF_A="-0.64099"/>
      <bbk:Obs TIME_PERIOD="2004-11-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-11-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-11-19" OBS_VALUE="3.0662" BBK_DIFF_A="1.01948"/>
      <bbk:Obs TIME_PERIOD="2004-11-18" OBS_VALUE="2.04672" BBK_DIFF_A="-0.50993"/>
      <bbk:Obs TIME_PERIOD="2004-11-17" OBS_VALUE="2.55665" BBK_DIFF_A="0.3856"/>
      <bbk:Obs TIME_PERIOD="2004-11-16" OBS_VALUE="2.17105" BBK_DIFF_A="0.16821"/>
      <bbk:Obs TIME_PERIOD="2004-11-15" OBS_VALUE="2.00284" BBK_DIFF_A="-0.03685"/>
      <bbk:Obs TIME_PERIOD="2004-11-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-11-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-11-12" OBS_VALUE="2.03969" BBK_DIFF_A="-0.16945"/>
      <bbk:Obs TIME_PERIOD="2004-11-11" OBS_VALUE="2.20914" BBK_DIFF_A="-2.15259"/>
      <bbk:Obs TIME_PERIOD="2004-11-10" OBS_VALUE="4.36173" BBK_DIFF_A="-0.031"/>
      <bbk:Obs TIME_PERIOD="2004-11-09" OBS_VALUE="4.39273" BBK_DIFF_A="2.66862"/>
      <bbk:Obs TIME_PERIOD="2004-11-08" OBS_VALUE="1.72411" BBK_DIFF_A="-0.5686"/>
      <bbk:Obs TIME_PERIOD="2004-11-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-11-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-11-05" OBS_VALUE="2.29271" BBK_DIFF_A="0.12578"/>
      <bbk:Obs TIME_PERIOD="2004-11-04" OBS_VALUE="2.16693" BBK_DIFF_A="-0.64396"/>
      <bbk:Obs TIME_PERIOD="2004-11-03" OBS_VALUE="2.81089" BBK_DIFF_A="0.02894"/>
      <bbk:Obs TIME_PERIOD="2004-11-02" OBS_VALUE="2.78195" BBK_DIFF_A="0.24752"/>
      <bbk:Obs TIME_PERIOD="2004-11-01" OBS_VALUE="2.53443" BBK_DIFF_A="-0.33763"/>
      <bbk:Obs TIME_PERIOD="2004-10-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-10-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-10-29" OBS_VALUE="2.87206" BBK_DIFF_A="-0.14374"/>
      <bbk:Obs TIME_PERIOD="2004-10-28" OBS_VALUE="3.0158" BBK_DIFF_A="0.83057"/>
      <bbk:Obs TIME_PERIOD="2004-10-27" OBS_VALUE="2.18523" BBK_DIFF_A="-0.50832"/>
      <bbk:Obs TIME_PERIOD="2004-10-26" OBS_VALUE="2.69355" BBK_DIFF_A="0.48134"/>
      <bbk:Obs TIME_PERIOD="2004-10-25" OBS_VALUE="2.21221" BBK_DIFF_A="-0.03797"/>
      <bbk:Obs TIME_PERIOD="2004-10-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-10-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-10-22" OBS_VALUE="2.25018" BBK_DIFF_A="-0.33477"/>
      <bbk:Obs TIME_PERIOD="2004-10-21" OBS_VALUE="2.58495" BBK_DIFF_A="0.40613"/>
      <bbk:Obs TIME_PERIOD="2004-10-20" OBS_VALUE="2.17882" BBK_DIFF_A="-0.57447"/>
      <bbk:Obs TIME_PERIOD="2004-10-19" OBS_VALUE="2.75329" BBK_DIFF_A="-4.0E-5"/>
      <bbk:Obs TIME_PERIOD="2004-10-18" OBS_VALUE="2.75333" BBK_DIFF_A="-0.16963"/>
      <bbk:Obs TIME_PERIOD="2004-10-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-10-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-10-15" OBS_VALUE="2.92296" BBK_DIFF_A="-0.04896"/>
      <bbk:Obs TIME_PERIOD="2004-10-14" OBS_VALUE="2.97192" BBK_DIFF_A="-2.20272"/>
      <bbk:Obs TIME_PERIOD="2004-10-13" OBS_VALUE="5.17464" BBK_DIFF_A="2.95329"/>
      <bbk:Obs TIME_PERIOD="2004-10-12" OBS_VALUE="2.22135" BBK_DIFF_A="-2.76601"/>
      <bbk:Obs TIME_PERIOD="2004-10-11" OBS_VALUE="4.98736" BBK_DIFF_A="0.8589"/>
      <bbk:Obs TIME_PERIOD="2004-10-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-10-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-10-08" OBS_VALUE="4.12846" BBK_DIFF_A="0.30664"/>
      <bbk:Obs TIME_PERIOD="2004-10-07" OBS_VALUE="3.82182" BBK_DIFF_A="0.74116"/>
      <bbk:Obs TIME_PERIOD="2004-10-06" OBS_VALUE="3.08066" BBK_DIFF_A="0.22532"/>
      <bbk:Obs TIME_PERIOD="2004-10-05" OBS_VALUE="2.85534" BBK_DIFF_A="-0.32072"/>
      <bbk:Obs TIME_PERIOD="2004-10-04" OBS_VALUE="3.17606" BBK_DIFF_A="0.41889"/>
      <bbk:Obs TIME_PERIOD="2004-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-10-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-10-01" OBS_VALUE="2.75717" BBK_DIFF_A="2.47594"/>
      <bbk:Obs TIME_PERIOD="2004-09-30" OBS_VALUE="0.28123" BBK_DIFF_A="-2.80792"/>
      <bbk:Obs TIME_PERIOD="2004-09-29" OBS_VALUE="3.08915" BBK_DIFF_A="0.69617"/>
      <bbk:Obs TIME_PERIOD="2004-09-28" OBS_VALUE="2.39298" BBK_DIFF_A="2.33048"/>
      <bbk:Obs TIME_PERIOD="2004-09-27" OBS_VALUE="0.0625" BBK_DIFF_A="-1.41507"/>
      <bbk:Obs TIME_PERIOD="2004-09-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-09-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-09-24" OBS_VALUE="1.47757" BBK_DIFF_A="-0.59824"/>
      <bbk:Obs TIME_PERIOD="2004-09-23" OBS_VALUE="2.07581" BBK_DIFF_A="-0.93056"/>
      <bbk:Obs TIME_PERIOD="2004-09-22" OBS_VALUE="3.00637" BBK_DIFF_A="-0.01637"/>
      <bbk:Obs TIME_PERIOD="2004-09-21" OBS_VALUE="3.02274" BBK_DIFF_A="0.92453"/>
      <bbk:Obs TIME_PERIOD="2004-09-20" OBS_VALUE="2.09821" BBK_DIFF_A="-1.37729"/>
      <bbk:Obs TIME_PERIOD="2004-09-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-09-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-09-17" OBS_VALUE="3.4755" BBK_DIFF_A="3.16554"/>
      <bbk:Obs TIME_PERIOD="2004-09-16" OBS_VALUE="0.30996" BBK_DIFF_A="-2.22483"/>
      <bbk:Obs TIME_PERIOD="2004-09-15" OBS_VALUE="2.53479" BBK_DIFF_A="-4.74645"/>
      <bbk:Obs TIME_PERIOD="2004-09-14" OBS_VALUE="7.28124" BBK_DIFF_A="6.30052"/>
      <bbk:Obs TIME_PERIOD="2004-09-13" OBS_VALUE="0.98072" BBK_DIFF_A="-2.86428"/>
      <bbk:Obs TIME_PERIOD="2004-09-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-09-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-09-10" OBS_VALUE="3.845" BBK_DIFF_A="-0.75374"/>
      <bbk:Obs TIME_PERIOD="2004-09-09" OBS_VALUE="4.59874" BBK_DIFF_A="3.20503"/>
      <bbk:Obs TIME_PERIOD="2004-09-08" OBS_VALUE="1.39371" BBK_DIFF_A="-3.97704"/>
      <bbk:Obs TIME_PERIOD="2004-09-07" OBS_VALUE="5.37075" BBK_DIFF_A="-0.02168"/>
      <bbk:Obs TIME_PERIOD="2004-09-06" OBS_VALUE="5.39243" BBK_DIFF_A="-4.34343"/>
      <bbk:Obs TIME_PERIOD="2004-09-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-09-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-09-03" OBS_VALUE="9.73586" BBK_DIFF_A="8.60834"/>
      <bbk:Obs TIME_PERIOD="2004-09-02" OBS_VALUE="1.12752" BBK_DIFF_A="-1.55979"/>
      <bbk:Obs TIME_PERIOD="2004-09-01" OBS_VALUE="2.68731" BBK_DIFF_A="-1.95211"/>
      <bbk:Obs TIME_PERIOD="2004-08-31" OBS_VALUE="4.63942" BBK_DIFF_A="-0.07328"/>
      <bbk:Obs TIME_PERIOD="2004-08-30" OBS_VALUE="4.7127" BBK_DIFF_A="1.66709"/>
      <bbk:Obs TIME_PERIOD="2004-08-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-08-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-08-27" OBS_VALUE="3.04561" BBK_DIFF_A="-0.23941"/>
      <bbk:Obs TIME_PERIOD="2004-08-26" OBS_VALUE="3.28502" BBK_DIFF_A="0.78254"/>
      <bbk:Obs TIME_PERIOD="2004-08-25" OBS_VALUE="2.50248" BBK_DIFF_A="-3.88835"/>
      <bbk:Obs TIME_PERIOD="2004-08-24" OBS_VALUE="6.39083" BBK_DIFF_A="3.7119"/>
      <bbk:Obs TIME_PERIOD="2004-08-23" OBS_VALUE="2.67893" BBK_DIFF_A="0.47424"/>
      <bbk:Obs TIME_PERIOD="2004-08-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-08-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-08-20" OBS_VALUE="2.20469" BBK_DIFF_A="0.04302"/>
      <bbk:Obs TIME_PERIOD="2004-08-19" OBS_VALUE="2.16167" BBK_DIFF_A="-0.75474"/>
      <bbk:Obs TIME_PERIOD="2004-08-18" OBS_VALUE="2.91641" BBK_DIFF_A="-1.25596"/>
      <bbk:Obs TIME_PERIOD="2004-08-17" OBS_VALUE="4.17237" BBK_DIFF_A="2.13979"/>
      <bbk:Obs TIME_PERIOD="2004-08-16" OBS_VALUE="2.03258" BBK_DIFF_A="0.03973"/>
      <bbk:Obs TIME_PERIOD="2004-08-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-08-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-08-13" OBS_VALUE="1.99285" BBK_DIFF_A="0.01019"/>
      <bbk:Obs TIME_PERIOD="2004-08-12" OBS_VALUE="1.98266" BBK_DIFF_A="-0.01311"/>
      <bbk:Obs TIME_PERIOD="2004-08-11" OBS_VALUE="1.99577" BBK_DIFF_A="-0.05251"/>
      <bbk:Obs TIME_PERIOD="2004-08-10" OBS_VALUE="2.04828" BBK_DIFF_A="1.3009"/>
      <bbk:Obs TIME_PERIOD="2004-08-09" OBS_VALUE="0.74738" BBK_DIFF_A="-12.18464"/>
      <bbk:Obs TIME_PERIOD="2004-08-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-08-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-08-06" OBS_VALUE="12.93202" BBK_DIFF_A="3.18961"/>
      <bbk:Obs TIME_PERIOD="2004-08-05" OBS_VALUE="9.74241" BBK_DIFF_A="8.92225"/>
      <bbk:Obs TIME_PERIOD="2004-08-04" OBS_VALUE="0.82016" BBK_DIFF_A="0.82006"/>
      <bbk:Obs TIME_PERIOD="2004-08-03" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.67719"/>
      <bbk:Obs TIME_PERIOD="2004-08-02" OBS_VALUE="0.67729" BBK_DIFF_A="-4.62992"/>
      <bbk:Obs TIME_PERIOD="2004-08-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-07-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-07-30" OBS_VALUE="5.30721" BBK_DIFF_A="1.68261"/>
      <bbk:Obs TIME_PERIOD="2004-07-29" OBS_VALUE="3.6246" BBK_DIFF_A="-0.77176"/>
      <bbk:Obs TIME_PERIOD="2004-07-28" OBS_VALUE="4.39636" BBK_DIFF_A="0.9374"/>
      <bbk:Obs TIME_PERIOD="2004-07-27" OBS_VALUE="3.45896" BBK_DIFF_A="-2.03839"/>
      <bbk:Obs TIME_PERIOD="2004-07-26" OBS_VALUE="5.49735" BBK_DIFF_A="5.4737"/>
      <bbk:Obs TIME_PERIOD="2004-07-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-07-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-07-23" OBS_VALUE="0.02365" BBK_DIFF_A="-0.45376"/>
      <bbk:Obs TIME_PERIOD="2004-07-22" OBS_VALUE="0.47741" BBK_DIFF_A="0.47731"/>
      <bbk:Obs TIME_PERIOD="2004-07-21" OBS_VALUE="1.0E-4" BBK_DIFF_A="-3.97799"/>
      <bbk:Obs TIME_PERIOD="2004-07-20" OBS_VALUE="3.97809" BBK_DIFF_A="0.00932"/>
      <bbk:Obs TIME_PERIOD="2004-07-19" OBS_VALUE="3.96877" BBK_DIFF_A="3.95593"/>
      <bbk:Obs TIME_PERIOD="2004-07-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-07-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-07-16" OBS_VALUE="0.01284" BBK_DIFF_A="-0.01611"/>
      <bbk:Obs TIME_PERIOD="2004-07-15" OBS_VALUE="0.02895" BBK_DIFF_A="0.02885"/>
      <bbk:Obs TIME_PERIOD="2004-07-14" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.06257"/>
      <bbk:Obs TIME_PERIOD="2004-07-13" OBS_VALUE="0.06267" BBK_DIFF_A="-3.73518"/>
      <bbk:Obs TIME_PERIOD="2004-07-12" OBS_VALUE="3.79785" BBK_DIFF_A="0.61703"/>
      <bbk:Obs TIME_PERIOD="2004-07-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-07-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-07-09" OBS_VALUE="3.18082" BBK_DIFF_A="-0.87986"/>
      <bbk:Obs TIME_PERIOD="2004-07-08" OBS_VALUE="4.06068" BBK_DIFF_A="-0.16028"/>
      <bbk:Obs TIME_PERIOD="2004-07-07" OBS_VALUE="4.22096" BBK_DIFF_A="1.70878"/>
      <bbk:Obs TIME_PERIOD="2004-07-06" OBS_VALUE="2.51218" BBK_DIFF_A="-0.10167"/>
      <bbk:Obs TIME_PERIOD="2004-07-05" OBS_VALUE="2.61385" BBK_DIFF_A="2.57199"/>
      <bbk:Obs TIME_PERIOD="2004-07-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-07-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-07-02" OBS_VALUE="0.04186" BBK_DIFF_A="-1.92707"/>
      <bbk:Obs TIME_PERIOD="2004-07-01" OBS_VALUE="1.96893" BBK_DIFF_A="-1.77192"/>
      <bbk:Obs TIME_PERIOD="2004-06-30" OBS_VALUE="3.74085" BBK_DIFF_A="1.25795"/>
      <bbk:Obs TIME_PERIOD="2004-06-29" OBS_VALUE="2.4829" BBK_DIFF_A="-2.18285"/>
      <bbk:Obs TIME_PERIOD="2004-06-28" OBS_VALUE="4.66575" BBK_DIFF_A="4.00745"/>
      <bbk:Obs TIME_PERIOD="2004-06-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-06-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-06-25" OBS_VALUE="0.6583" BBK_DIFF_A="-3.01149"/>
      <bbk:Obs TIME_PERIOD="2004-06-24" OBS_VALUE="3.66979" BBK_DIFF_A="1.69857"/>
      <bbk:Obs TIME_PERIOD="2004-06-23" OBS_VALUE="1.97122" BBK_DIFF_A="-0.24517"/>
      <bbk:Obs TIME_PERIOD="2004-06-22" OBS_VALUE="2.21639" BBK_DIFF_A="2.21629"/>
      <bbk:Obs TIME_PERIOD="2004-06-21" OBS_VALUE="1.0E-4" BBK_DIFF_A="-1.40285"/>
      <bbk:Obs TIME_PERIOD="2004-06-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-06-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-06-18" OBS_VALUE="1.40295" BBK_DIFF_A="1.40285"/>
      <bbk:Obs TIME_PERIOD="2004-06-17" OBS_VALUE="1.0E-4" BBK_DIFF_A="-1.73513"/>
      <bbk:Obs TIME_PERIOD="2004-06-16" OBS_VALUE="1.73523" BBK_DIFF_A="1.73377"/>
      <bbk:Obs TIME_PERIOD="2004-06-15" OBS_VALUE="0.00146" BBK_DIFF_A="-0.00311"/>
      <bbk:Obs TIME_PERIOD="2004-06-14" OBS_VALUE="0.00457" BBK_DIFF_A="0.00447"/>
      <bbk:Obs TIME_PERIOD="2004-06-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-06-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-06-11" OBS_VALUE="1.0E-4" BBK_DIFF_A="-2.28519"/>
      <bbk:Obs TIME_PERIOD="2004-06-10" OBS_VALUE="2.28529" BBK_DIFF_A="-1.20951"/>
      <bbk:Obs TIME_PERIOD="2004-06-09" OBS_VALUE="3.4948" BBK_DIFF_A="-4.24043"/>
      <bbk:Obs TIME_PERIOD="2004-06-08" OBS_VALUE="7.73523" BBK_DIFF_A="4.6177"/>
      <bbk:Obs TIME_PERIOD="2004-06-07" OBS_VALUE="3.11753" BBK_DIFF_A="0.85346"/>
      <bbk:Obs TIME_PERIOD="2004-06-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-06-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-06-04" OBS_VALUE="2.26407" BBK_DIFF_A="-1.5642"/>
      <bbk:Obs TIME_PERIOD="2004-06-03" OBS_VALUE="3.82827" BBK_DIFF_A="0.58731"/>
      <bbk:Obs TIME_PERIOD="2004-06-02" OBS_VALUE="3.24096" BBK_DIFF_A="0.51167"/>
      <bbk:Obs TIME_PERIOD="2004-06-01" OBS_VALUE="2.72929" BBK_DIFF_A="0.49114"/>
      <bbk:Obs TIME_PERIOD="2004-05-31" OBS_VALUE="2.23815" BBK_DIFF_A="0.10277"/>
      <bbk:Obs TIME_PERIOD="2004-05-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-05-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-05-28" OBS_VALUE="2.13538" BBK_DIFF_A="0.17559"/>
      <bbk:Obs TIME_PERIOD="2004-05-27" OBS_VALUE="1.95979" BBK_DIFF_A="0.10166"/>
      <bbk:Obs TIME_PERIOD="2004-05-26" OBS_VALUE="1.85813" BBK_DIFF_A="-1.90504"/>
      <bbk:Obs TIME_PERIOD="2004-05-25" OBS_VALUE="3.76317" BBK_DIFF_A="3.76307"/>
      <bbk:Obs TIME_PERIOD="2004-05-24" OBS_VALUE="1.0E-4" BBK_DIFF_A="-4.43497"/>
      <bbk:Obs TIME_PERIOD="2004-05-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-05-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-05-21" OBS_VALUE="4.43507" BBK_DIFF_A="3.48311"/>
      <bbk:Obs TIME_PERIOD="2004-05-20" OBS_VALUE="0.95196" BBK_DIFF_A="-2.84216"/>
      <bbk:Obs TIME_PERIOD="2004-05-19" OBS_VALUE="3.79412" BBK_DIFF_A="2.14394"/>
      <bbk:Obs TIME_PERIOD="2004-05-18" OBS_VALUE="1.65018" BBK_DIFF_A="-0.46458"/>
      <bbk:Obs TIME_PERIOD="2004-05-17" OBS_VALUE="2.11476" BBK_DIFF_A="0.64907"/>
      <bbk:Obs TIME_PERIOD="2004-05-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-05-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-05-14" OBS_VALUE="1.46569" BBK_DIFF_A="-1.03493"/>
      <bbk:Obs TIME_PERIOD="2004-05-13" OBS_VALUE="2.50062" BBK_DIFF_A="0.1889"/>
      <bbk:Obs TIME_PERIOD="2004-05-12" OBS_VALUE="2.31172" BBK_DIFF_A="0.81617"/>
      <bbk:Obs TIME_PERIOD="2004-05-11" OBS_VALUE="1.49555" BBK_DIFF_A="-0.90423"/>
      <bbk:Obs TIME_PERIOD="2004-05-10" OBS_VALUE="2.39978" BBK_DIFF_A="0.4336"/>
      <bbk:Obs TIME_PERIOD="2004-05-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-05-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-05-07" OBS_VALUE="1.96618" BBK_DIFF_A="1.04814"/>
      <bbk:Obs TIME_PERIOD="2004-05-06" OBS_VALUE="0.91804" BBK_DIFF_A="-0.98248"/>
      <bbk:Obs TIME_PERIOD="2004-05-05" OBS_VALUE="1.90052" BBK_DIFF_A="0.63239"/>
      <bbk:Obs TIME_PERIOD="2004-05-04" OBS_VALUE="1.26813" BBK_DIFF_A="0.1162"/>
      <bbk:Obs TIME_PERIOD="2004-05-03" OBS_VALUE="1.15193" BBK_DIFF_A="0.46932"/>
      <bbk:Obs TIME_PERIOD="2004-05-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-04-30" OBS_VALUE="0.68261" BBK_DIFF_A="-1.27614"/>
      <bbk:Obs TIME_PERIOD="2004-04-29" OBS_VALUE="1.95875" BBK_DIFF_A="-0.07149"/>
      <bbk:Obs TIME_PERIOD="2004-04-28" OBS_VALUE="2.03024" BBK_DIFF_A="-0.32887"/>
      <bbk:Obs TIME_PERIOD="2004-04-27" OBS_VALUE="2.35911" BBK_DIFF_A="0.34565"/>
      <bbk:Obs TIME_PERIOD="2004-04-26" OBS_VALUE="2.01346" BBK_DIFF_A="0.43028"/>
      <bbk:Obs TIME_PERIOD="2004-04-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-04-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-04-23" OBS_VALUE="1.58318" BBK_DIFF_A="-0.53629"/>
      <bbk:Obs TIME_PERIOD="2004-04-22" OBS_VALUE="2.11947" BBK_DIFF_A="1.20193"/>
      <bbk:Obs TIME_PERIOD="2004-04-21" OBS_VALUE="0.91754" BBK_DIFF_A="-1.25309"/>
      <bbk:Obs TIME_PERIOD="2004-04-20" OBS_VALUE="2.17063" BBK_DIFF_A="1.19891"/>
      <bbk:Obs TIME_PERIOD="2004-04-19" OBS_VALUE="0.97172" BBK_DIFF_A="-0.85675"/>
      <bbk:Obs TIME_PERIOD="2004-04-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-04-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-04-16" OBS_VALUE="1.82847" BBK_DIFF_A="-0.12551"/>
      <bbk:Obs TIME_PERIOD="2004-04-15" OBS_VALUE="1.95398" BBK_DIFF_A="1.95378"/>
      <bbk:Obs TIME_PERIOD="2004-04-14" OBS_VALUE="2.0E-4" BBK_DIFF_A="1.0E-4"/>
      <bbk:Obs TIME_PERIOD="2004-04-13" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.81249"/>
      <bbk:Obs TIME_PERIOD="2004-04-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-04-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-04-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-04-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-04-08" OBS_VALUE="0.81259" BBK_DIFF_A="0.02275"/>
      <bbk:Obs TIME_PERIOD="2004-04-07" OBS_VALUE="0.78984" BBK_DIFF_A="0.1199"/>
      <bbk:Obs TIME_PERIOD="2004-04-06" OBS_VALUE="0.66994" BBK_DIFF_A="0.66979"/>
      <bbk:Obs TIME_PERIOD="2004-04-05" OBS_VALUE="1.5E-4" BBK_DIFF_A="-0.0087"/>
      <bbk:Obs TIME_PERIOD="2004-04-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-04-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-04-02" OBS_VALUE="0.00885" BBK_DIFF_A="-1.32599"/>
      <bbk:Obs TIME_PERIOD="2004-04-01" OBS_VALUE="1.33484" BBK_DIFF_A="-0.47131"/>
      <bbk:Obs TIME_PERIOD="2004-03-31" OBS_VALUE="1.80615" BBK_DIFF_A="1.80605"/>
      <bbk:Obs TIME_PERIOD="2004-03-30" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.10852"/>
      <bbk:Obs TIME_PERIOD="2004-03-29" OBS_VALUE="0.10862" BBK_DIFF_A="0.05431"/>
      <bbk:Obs TIME_PERIOD="2004-03-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-03-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-03-26" OBS_VALUE="0.05431" BBK_DIFF_A="0.05421"/>
      <bbk:Obs TIME_PERIOD="2004-03-25" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.78291"/>
      <bbk:Obs TIME_PERIOD="2004-03-24" OBS_VALUE="0.78301" BBK_DIFF_A="-0.21762"/>
      <bbk:Obs TIME_PERIOD="2004-03-23" OBS_VALUE="1.00063" BBK_DIFF_A="-0.23381"/>
      <bbk:Obs TIME_PERIOD="2004-03-22" OBS_VALUE="1.23444" BBK_DIFF_A="-0.20942"/>
      <bbk:Obs TIME_PERIOD="2004-03-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-03-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-03-19" OBS_VALUE="1.44386" BBK_DIFF_A="0.48578"/>
      <bbk:Obs TIME_PERIOD="2004-03-18" OBS_VALUE="0.95808" BBK_DIFF_A="-0.16426"/>
      <bbk:Obs TIME_PERIOD="2004-03-17" OBS_VALUE="1.12234" BBK_DIFF_A="0.32318"/>
      <bbk:Obs TIME_PERIOD="2004-03-16" OBS_VALUE="0.79916" BBK_DIFF_A="-0.40056"/>
      <bbk:Obs TIME_PERIOD="2004-03-15" OBS_VALUE="1.19972" BBK_DIFF_A="-0.70662"/>
      <bbk:Obs TIME_PERIOD="2004-03-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-03-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-03-12" OBS_VALUE="1.90634" BBK_DIFF_A="0.91419"/>
      <bbk:Obs TIME_PERIOD="2004-03-11" OBS_VALUE="0.99215" BBK_DIFF_A="-0.89473"/>
      <bbk:Obs TIME_PERIOD="2004-03-10" OBS_VALUE="1.88688" BBK_DIFF_A="0.0368"/>
      <bbk:Obs TIME_PERIOD="2004-03-09" OBS_VALUE="1.85008" BBK_DIFF_A="0.86424"/>
      <bbk:Obs TIME_PERIOD="2004-03-08" OBS_VALUE="0.98584" BBK_DIFF_A="0.8999"/>
      <bbk:Obs TIME_PERIOD="2004-03-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-03-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-03-05" OBS_VALUE="0.08594" BBK_DIFF_A="-1.65311"/>
      <bbk:Obs TIME_PERIOD="2004-03-04" OBS_VALUE="1.73905" BBK_DIFF_A="-0.25087"/>
      <bbk:Obs TIME_PERIOD="2004-03-03" OBS_VALUE="1.98992" BBK_DIFF_A="0.80293"/>
      <bbk:Obs TIME_PERIOD="2004-03-02" OBS_VALUE="1.18699" BBK_DIFF_A="0.05963"/>
      <bbk:Obs TIME_PERIOD="2004-03-01" OBS_VALUE="1.12736" BBK_DIFF_A="-0.5398"/>
      <bbk:Obs TIME_PERIOD="2004-02-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-02-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-02-27" OBS_VALUE="1.66716" BBK_DIFF_A="0.65245"/>
      <bbk:Obs TIME_PERIOD="2004-02-26" OBS_VALUE="1.01471" BBK_DIFF_A="-1.36887"/>
      <bbk:Obs TIME_PERIOD="2004-02-25" OBS_VALUE="2.38358" BBK_DIFF_A="0.39117"/>
      <bbk:Obs TIME_PERIOD="2004-02-24" OBS_VALUE="1.99241" BBK_DIFF_A="0.0358"/>
      <bbk:Obs TIME_PERIOD="2004-02-23" OBS_VALUE="1.95661" BBK_DIFF_A="0.22231"/>
      <bbk:Obs TIME_PERIOD="2004-02-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-02-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-02-20" OBS_VALUE="1.7343" BBK_DIFF_A="0.19822"/>
      <bbk:Obs TIME_PERIOD="2004-02-19" OBS_VALUE="1.53608" BBK_DIFF_A="-0.21664"/>
      <bbk:Obs TIME_PERIOD="2004-02-18" OBS_VALUE="1.75272" BBK_DIFF_A="0.97797"/>
      <bbk:Obs TIME_PERIOD="2004-02-17" OBS_VALUE="0.77475" BBK_DIFF_A="0.75979"/>
      <bbk:Obs TIME_PERIOD="2004-02-16" OBS_VALUE="0.01496" BBK_DIFF_A="-1.51853"/>
      <bbk:Obs TIME_PERIOD="2004-02-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-02-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-02-13" OBS_VALUE="1.53349" BBK_DIFF_A="0.23826"/>
      <bbk:Obs TIME_PERIOD="2004-02-12" OBS_VALUE="1.29523" BBK_DIFF_A="0.47886"/>
      <bbk:Obs TIME_PERIOD="2004-02-11" OBS_VALUE="0.81637" BBK_DIFF_A="-0.48434"/>
      <bbk:Obs TIME_PERIOD="2004-02-10" OBS_VALUE="1.30071" BBK_DIFF_A="0.47728"/>
      <bbk:Obs TIME_PERIOD="2004-02-09" OBS_VALUE="0.82343" BBK_DIFF_A="-0.35997"/>
      <bbk:Obs TIME_PERIOD="2004-02-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-02-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-02-06" OBS_VALUE="1.1834" BBK_DIFF_A="-0.13278"/>
      <bbk:Obs TIME_PERIOD="2004-02-05" OBS_VALUE="1.31618" BBK_DIFF_A="-0.46336"/>
      <bbk:Obs TIME_PERIOD="2004-02-04" OBS_VALUE="1.77954" BBK_DIFF_A="0.42457"/>
      <bbk:Obs TIME_PERIOD="2004-02-03" OBS_VALUE="1.35497" BBK_DIFF_A="-0.19836"/>
      <bbk:Obs TIME_PERIOD="2004-02-02" OBS_VALUE="1.55333" BBK_DIFF_A="-0.11958"/>
      <bbk:Obs TIME_PERIOD="2004-02-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-01-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-01-30" OBS_VALUE="1.67291" BBK_DIFF_A="0.77114"/>
      <bbk:Obs TIME_PERIOD="2004-01-29" OBS_VALUE="0.90177" BBK_DIFF_A="-1.15123"/>
      <bbk:Obs TIME_PERIOD="2004-01-28" OBS_VALUE="2.053" BBK_DIFF_A="0.56752"/>
      <bbk:Obs TIME_PERIOD="2004-01-27" OBS_VALUE="1.48548" BBK_DIFF_A="-0.3449"/>
      <bbk:Obs TIME_PERIOD="2004-01-26" OBS_VALUE="1.83038" BBK_DIFF_A="1.20188"/>
      <bbk:Obs TIME_PERIOD="2004-01-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-01-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-01-23" OBS_VALUE="0.6285" BBK_DIFF_A="-0.19248"/>
      <bbk:Obs TIME_PERIOD="2004-01-22" OBS_VALUE="0.82098" BBK_DIFF_A="0.11711"/>
      <bbk:Obs TIME_PERIOD="2004-01-21" OBS_VALUE="0.70387" BBK_DIFF_A="-1.43748"/>
      <bbk:Obs TIME_PERIOD="2004-01-20" OBS_VALUE="2.14135" BBK_DIFF_A="1.51042"/>
      <bbk:Obs TIME_PERIOD="2004-01-19" OBS_VALUE="0.63093" BBK_DIFF_A="0.08472"/>
      <bbk:Obs TIME_PERIOD="2004-01-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-01-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-01-16" OBS_VALUE="0.54621" BBK_DIFF_A="-0.90512"/>
      <bbk:Obs TIME_PERIOD="2004-01-15" OBS_VALUE="1.45133" BBK_DIFF_A="-0.47262"/>
      <bbk:Obs TIME_PERIOD="2004-01-14" OBS_VALUE="1.92395" BBK_DIFF_A="0.09964"/>
      <bbk:Obs TIME_PERIOD="2004-01-13" OBS_VALUE="1.82431" BBK_DIFF_A="-0.0228"/>
      <bbk:Obs TIME_PERIOD="2004-01-12" OBS_VALUE="1.84711" BBK_DIFF_A="-0.11522"/>
      <bbk:Obs TIME_PERIOD="2004-01-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-01-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-01-09" OBS_VALUE="1.96233" BBK_DIFF_A="0.48149"/>
      <bbk:Obs TIME_PERIOD="2004-01-08" OBS_VALUE="1.48084" BBK_DIFF_A="0.42636"/>
      <bbk:Obs TIME_PERIOD="2004-01-07" OBS_VALUE="1.05448" BBK_DIFF_A="0.50444"/>
      <bbk:Obs TIME_PERIOD="2004-01-06" OBS_VALUE="0.55004" BBK_DIFF_A="-1.11115"/>
      <bbk:Obs TIME_PERIOD="2004-01-05" OBS_VALUE="1.66119" BBK_DIFF_A="-0.62948"/>
      <bbk:Obs TIME_PERIOD="2004-01-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-01-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2004-01-02" OBS_VALUE="2.29067" BBK_DIFF_A="-0.09866"/>
      <bbk:Obs TIME_PERIOD="2004-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-12-30" OBS_VALUE="2.38933" BBK_DIFF_A="1.67151"/>
      <bbk:Obs TIME_PERIOD="2003-12-29" OBS_VALUE="0.71782" BBK_DIFF_A="-1.35732"/>
      <bbk:Obs TIME_PERIOD="2003-12-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-12-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-12-23" OBS_VALUE="2.07514" BBK_DIFF_A="0.36678"/>
      <bbk:Obs TIME_PERIOD="2003-12-22" OBS_VALUE="1.70836" BBK_DIFF_A="-0.22927"/>
      <bbk:Obs TIME_PERIOD="2003-12-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-12-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-12-19" OBS_VALUE="1.93763" BBK_DIFF_A="0.13199"/>
      <bbk:Obs TIME_PERIOD="2003-12-18" OBS_VALUE="1.80564" BBK_DIFF_A="-0.37287"/>
      <bbk:Obs TIME_PERIOD="2003-12-17" OBS_VALUE="2.17851" BBK_DIFF_A="-0.24199"/>
      <bbk:Obs TIME_PERIOD="2003-12-16" OBS_VALUE="2.4205" BBK_DIFF_A="-1.63241"/>
      <bbk:Obs TIME_PERIOD="2003-12-15" OBS_VALUE="4.05291" BBK_DIFF_A="4.05281"/>
      <bbk:Obs TIME_PERIOD="2003-12-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-12-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-12-12" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2003-12-11" OBS_VALUE="1.0E-4" BBK_DIFF_A="-4.15855"/>
      <bbk:Obs TIME_PERIOD="2003-12-10" OBS_VALUE="4.15865" BBK_DIFF_A="4.10672"/>
      <bbk:Obs TIME_PERIOD="2003-12-09" OBS_VALUE="0.05193" BBK_DIFF_A="0.05183"/>
      <bbk:Obs TIME_PERIOD="2003-12-08" OBS_VALUE="1.0E-4" BBK_DIFF_A="-2.48277"/>
      <bbk:Obs TIME_PERIOD="2003-12-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-12-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-12-05" OBS_VALUE="2.48287" BBK_DIFF_A="-2.06881"/>
      <bbk:Obs TIME_PERIOD="2003-12-04" OBS_VALUE="4.55168" BBK_DIFF_A="0.1752"/>
      <bbk:Obs TIME_PERIOD="2003-12-03" OBS_VALUE="4.37648" BBK_DIFF_A="1.66359"/>
      <bbk:Obs TIME_PERIOD="2003-12-02" OBS_VALUE="2.71289" BBK_DIFF_A="-6.74475"/>
      <bbk:Obs TIME_PERIOD="2003-12-01" OBS_VALUE="9.45764" BBK_DIFF_A="7.95277"/>
      <bbk:Obs TIME_PERIOD="2003-11-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-11-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-11-28" OBS_VALUE="1.50487" BBK_DIFF_A="1.20816"/>
      <bbk:Obs TIME_PERIOD="2003-11-27" OBS_VALUE="0.29671" BBK_DIFF_A="-6.45517"/>
      <bbk:Obs TIME_PERIOD="2003-11-26" OBS_VALUE="6.75188" BBK_DIFF_A="6.75178"/>
      <bbk:Obs TIME_PERIOD="2003-11-25" OBS_VALUE="1.0E-4" BBK_DIFF_A="-2.92096"/>
      <bbk:Obs TIME_PERIOD="2003-11-24" OBS_VALUE="2.92106" BBK_DIFF_A="0.6326"/>
      <bbk:Obs TIME_PERIOD="2003-11-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-11-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-11-21" OBS_VALUE="2.28846" BBK_DIFF_A="-0.06754"/>
      <bbk:Obs TIME_PERIOD="2003-11-20" OBS_VALUE="2.356" BBK_DIFF_A="0.04747"/>
      <bbk:Obs TIME_PERIOD="2003-11-19" OBS_VALUE="2.30853" BBK_DIFF_A="-0.27663"/>
      <bbk:Obs TIME_PERIOD="2003-11-18" OBS_VALUE="2.58516" BBK_DIFF_A="-0.00785"/>
      <bbk:Obs TIME_PERIOD="2003-11-17" OBS_VALUE="2.59301" BBK_DIFF_A="2.56463"/>
      <bbk:Obs TIME_PERIOD="2003-11-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-11-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-11-14" OBS_VALUE="0.02838" BBK_DIFF_A="-4.59034"/>
      <bbk:Obs TIME_PERIOD="2003-11-13" OBS_VALUE="4.61872" BBK_DIFF_A="2.18891"/>
      <bbk:Obs TIME_PERIOD="2003-11-12" OBS_VALUE="2.42981" BBK_DIFF_A="-0.40314"/>
      <bbk:Obs TIME_PERIOD="2003-11-11" OBS_VALUE="2.83295" BBK_DIFF_A="0.048"/>
      <bbk:Obs TIME_PERIOD="2003-11-10" OBS_VALUE="2.78495" BBK_DIFF_A="0.27541"/>
      <bbk:Obs TIME_PERIOD="2003-11-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-11-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-11-07" OBS_VALUE="2.50954" BBK_DIFF_A="-5.58626"/>
      <bbk:Obs TIME_PERIOD="2003-11-06" OBS_VALUE="8.0958" BBK_DIFF_A="7.59232"/>
      <bbk:Obs TIME_PERIOD="2003-11-05" OBS_VALUE="0.50348" BBK_DIFF_A="-2.1563"/>
      <bbk:Obs TIME_PERIOD="2003-11-04" OBS_VALUE="2.65978" BBK_DIFF_A="-1.06076"/>
      <bbk:Obs TIME_PERIOD="2003-11-03" OBS_VALUE="3.72054" BBK_DIFF_A="3.12111"/>
      <bbk:Obs TIME_PERIOD="2003-11-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-11-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-10-31" OBS_VALUE="0.59943" BBK_DIFF_A="-0.07383"/>
      <bbk:Obs TIME_PERIOD="2003-10-30" OBS_VALUE="0.67326" BBK_DIFF_A="-2.28372"/>
      <bbk:Obs TIME_PERIOD="2003-10-29" OBS_VALUE="2.95698" BBK_DIFF_A="-2.85942"/>
      <bbk:Obs TIME_PERIOD="2003-10-28" OBS_VALUE="5.8164" BBK_DIFF_A="1.70346"/>
      <bbk:Obs TIME_PERIOD="2003-10-27" OBS_VALUE="4.11294" BBK_DIFF_A="0.9177"/>
      <bbk:Obs TIME_PERIOD="2003-10-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-10-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-10-24" OBS_VALUE="3.19524" BBK_DIFF_A="-0.56759"/>
      <bbk:Obs TIME_PERIOD="2003-10-23" OBS_VALUE="3.76283" BBK_DIFF_A="0.29606"/>
      <bbk:Obs TIME_PERIOD="2003-10-22" OBS_VALUE="3.46677" BBK_DIFF_A="3.43267"/>
      <bbk:Obs TIME_PERIOD="2003-10-21" OBS_VALUE="0.0341" BBK_DIFF_A="-1.26149"/>
      <bbk:Obs TIME_PERIOD="2003-10-20" OBS_VALUE="1.29559" BBK_DIFF_A="-1.27776"/>
      <bbk:Obs TIME_PERIOD="2003-10-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-10-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-10-17" OBS_VALUE="2.57335" BBK_DIFF_A="1.60825"/>
      <bbk:Obs TIME_PERIOD="2003-10-16" OBS_VALUE="0.9651" BBK_DIFF_A="-0.26998"/>
      <bbk:Obs TIME_PERIOD="2003-10-15" OBS_VALUE="1.23508" BBK_DIFF_A="-1.28341"/>
      <bbk:Obs TIME_PERIOD="2003-10-14" OBS_VALUE="2.51849" BBK_DIFF_A="-0.29201"/>
      <bbk:Obs TIME_PERIOD="2003-10-13" OBS_VALUE="2.8105" BBK_DIFF_A="0.92859"/>
      <bbk:Obs TIME_PERIOD="2003-10-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-10-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-10-10" OBS_VALUE="1.88191" BBK_DIFF_A="-0.10537"/>
      <bbk:Obs TIME_PERIOD="2003-10-09" OBS_VALUE="1.98728" BBK_DIFF_A="-0.24309"/>
      <bbk:Obs TIME_PERIOD="2003-10-08" OBS_VALUE="2.23037" BBK_DIFF_A="0.8196"/>
      <bbk:Obs TIME_PERIOD="2003-10-07" OBS_VALUE="1.41077" BBK_DIFF_A="-1.94594"/>
      <bbk:Obs TIME_PERIOD="2003-10-06" OBS_VALUE="3.35671" BBK_DIFF_A="0.44925"/>
      <bbk:Obs TIME_PERIOD="2003-10-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-10-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-10-03" OBS_VALUE="2.90746" BBK_DIFF_A="1.84963"/>
      <bbk:Obs TIME_PERIOD="2003-10-02" OBS_VALUE="1.05783" BBK_DIFF_A="-3.99592"/>
      <bbk:Obs TIME_PERIOD="2003-10-01" OBS_VALUE="5.05375" BBK_DIFF_A="2.84465"/>
      <bbk:Obs TIME_PERIOD="2003-09-30" OBS_VALUE="2.2091" BBK_DIFF_A="0.00908"/>
      <bbk:Obs TIME_PERIOD="2003-09-29" OBS_VALUE="2.20002" BBK_DIFF_A="0.02654"/>
      <bbk:Obs TIME_PERIOD="2003-09-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-09-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-09-26" OBS_VALUE="2.17348" BBK_DIFF_A="0.21559"/>
      <bbk:Obs TIME_PERIOD="2003-09-25" OBS_VALUE="1.95789" BBK_DIFF_A="-0.39379"/>
      <bbk:Obs TIME_PERIOD="2003-09-24" OBS_VALUE="2.35168" BBK_DIFF_A="0.02446"/>
      <bbk:Obs TIME_PERIOD="2003-09-23" OBS_VALUE="2.32722" BBK_DIFF_A="0.27391"/>
      <bbk:Obs TIME_PERIOD="2003-09-22" OBS_VALUE="2.05331" BBK_DIFF_A="-0.75949"/>
      <bbk:Obs TIME_PERIOD="2003-09-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-09-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-09-19" OBS_VALUE="2.8128" BBK_DIFF_A="-0.31277"/>
      <bbk:Obs TIME_PERIOD="2003-09-18" OBS_VALUE="3.12557" BBK_DIFF_A="1.10256"/>
      <bbk:Obs TIME_PERIOD="2003-09-17" OBS_VALUE="2.02301" BBK_DIFF_A="-0.07678"/>
      <bbk:Obs TIME_PERIOD="2003-09-16" OBS_VALUE="2.09979" BBK_DIFF_A="-0.27193"/>
      <bbk:Obs TIME_PERIOD="2003-09-15" OBS_VALUE="2.37172" BBK_DIFF_A="-0.6945"/>
      <bbk:Obs TIME_PERIOD="2003-09-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-09-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-09-12" OBS_VALUE="3.06622" BBK_DIFF_A="0.59095"/>
      <bbk:Obs TIME_PERIOD="2003-09-11" OBS_VALUE="2.47527" BBK_DIFF_A="0.05925"/>
      <bbk:Obs TIME_PERIOD="2003-09-10" OBS_VALUE="2.41602" BBK_DIFF_A="0.58523"/>
      <bbk:Obs TIME_PERIOD="2003-09-09" OBS_VALUE="1.83079" BBK_DIFF_A="-0.09163"/>
      <bbk:Obs TIME_PERIOD="2003-09-08" OBS_VALUE="1.92242" BBK_DIFF_A="-4.59852"/>
      <bbk:Obs TIME_PERIOD="2003-09-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-09-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-09-05" OBS_VALUE="6.52094" BBK_DIFF_A="3.04958"/>
      <bbk:Obs TIME_PERIOD="2003-09-04" OBS_VALUE="3.47136" BBK_DIFF_A="-4.91154"/>
      <bbk:Obs TIME_PERIOD="2003-09-03" OBS_VALUE="8.3829" BBK_DIFF_A="4.57234"/>
      <bbk:Obs TIME_PERIOD="2003-09-02" OBS_VALUE="3.81056" BBK_DIFF_A="3.17919"/>
      <bbk:Obs TIME_PERIOD="2003-09-01" OBS_VALUE="0.63137" BBK_DIFF_A="0.07188"/>
      <bbk:Obs TIME_PERIOD="2003-08-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-08-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-08-29" OBS_VALUE="0.55949" BBK_DIFF_A="-3.26866"/>
      <bbk:Obs TIME_PERIOD="2003-08-28" OBS_VALUE="3.82815" BBK_DIFF_A="0.5748"/>
      <bbk:Obs TIME_PERIOD="2003-08-27" OBS_VALUE="3.25335" BBK_DIFF_A="-0.22724"/>
      <bbk:Obs TIME_PERIOD="2003-08-26" OBS_VALUE="3.48059" BBK_DIFF_A="-0.18133"/>
      <bbk:Obs TIME_PERIOD="2003-08-25" OBS_VALUE="3.66192" BBK_DIFF_A="-0.04143"/>
      <bbk:Obs TIME_PERIOD="2003-08-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-08-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-08-22" OBS_VALUE="3.70335" BBK_DIFF_A="0.2868"/>
      <bbk:Obs TIME_PERIOD="2003-08-21" OBS_VALUE="3.41655" BBK_DIFF_A="2.37307"/>
      <bbk:Obs TIME_PERIOD="2003-08-20" OBS_VALUE="1.04348" BBK_DIFF_A="-4.04834"/>
      <bbk:Obs TIME_PERIOD="2003-08-19" OBS_VALUE="5.09182" BBK_DIFF_A="5.09172"/>
      <bbk:Obs TIME_PERIOD="2003-08-18" OBS_VALUE="1.0E-4" BBK_DIFF_A="-1.8284"/>
      <bbk:Obs TIME_PERIOD="2003-08-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-08-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-08-15" OBS_VALUE="1.8285" BBK_DIFF_A="0.06478"/>
      <bbk:Obs TIME_PERIOD="2003-08-14" OBS_VALUE="1.76372" BBK_DIFF_A="-1.33821"/>
      <bbk:Obs TIME_PERIOD="2003-08-13" OBS_VALUE="3.10193" BBK_DIFF_A="-2.11645"/>
      <bbk:Obs TIME_PERIOD="2003-08-12" OBS_VALUE="5.21838" BBK_DIFF_A="1.94573"/>
      <bbk:Obs TIME_PERIOD="2003-08-11" OBS_VALUE="3.27265" BBK_DIFF_A="0.7098"/>
      <bbk:Obs TIME_PERIOD="2003-08-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-08-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-08-08" OBS_VALUE="2.56285" BBK_DIFF_A="-0.227"/>
      <bbk:Obs TIME_PERIOD="2003-08-07" OBS_VALUE="2.78985" BBK_DIFF_A="-4.43621"/>
      <bbk:Obs TIME_PERIOD="2003-08-06" OBS_VALUE="7.22606" BBK_DIFF_A="7.22596"/>
      <bbk:Obs TIME_PERIOD="2003-08-05" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.43475"/>
      <bbk:Obs TIME_PERIOD="2003-08-04" OBS_VALUE="0.43485" BBK_DIFF_A="-3.27951"/>
      <bbk:Obs TIME_PERIOD="2003-08-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-08-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-08-01" OBS_VALUE="3.71436" BBK_DIFF_A="1.26019"/>
      <bbk:Obs TIME_PERIOD="2003-07-31" OBS_VALUE="2.45417" BBK_DIFF_A="1.62121"/>
      <bbk:Obs TIME_PERIOD="2003-07-30" OBS_VALUE="0.83296" BBK_DIFF_A="-1.34938"/>
      <bbk:Obs TIME_PERIOD="2003-07-29" OBS_VALUE="2.18234" BBK_DIFF_A="-0.34762"/>
      <bbk:Obs TIME_PERIOD="2003-07-28" OBS_VALUE="2.52996" BBK_DIFF_A="0.1099"/>
      <bbk:Obs TIME_PERIOD="2003-07-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-07-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-07-25" OBS_VALUE="2.42006" BBK_DIFF_A="-0.00999"/>
      <bbk:Obs TIME_PERIOD="2003-07-24" OBS_VALUE="2.43005" BBK_DIFF_A="0.0539"/>
      <bbk:Obs TIME_PERIOD="2003-07-23" OBS_VALUE="2.37615" BBK_DIFF_A="-0.13036"/>
      <bbk:Obs TIME_PERIOD="2003-07-22" OBS_VALUE="2.50651" BBK_DIFF_A="-0.32056"/>
      <bbk:Obs TIME_PERIOD="2003-07-21" OBS_VALUE="2.82707" BBK_DIFF_A="-0.06842"/>
      <bbk:Obs TIME_PERIOD="2003-07-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-07-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-07-18" OBS_VALUE="2.89549" BBK_DIFF_A="0.04468"/>
      <bbk:Obs TIME_PERIOD="2003-07-17" OBS_VALUE="2.85081" BBK_DIFF_A="0.34452"/>
      <bbk:Obs TIME_PERIOD="2003-07-16" OBS_VALUE="2.50629" BBK_DIFF_A="-0.4717"/>
      <bbk:Obs TIME_PERIOD="2003-07-15" OBS_VALUE="2.97799" BBK_DIFF_A="0.07957"/>
      <bbk:Obs TIME_PERIOD="2003-07-14" OBS_VALUE="2.89842" BBK_DIFF_A="0.53575"/>
      <bbk:Obs TIME_PERIOD="2003-07-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-07-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-07-11" OBS_VALUE="2.36267" BBK_DIFF_A="2.14099"/>
      <bbk:Obs TIME_PERIOD="2003-07-10" OBS_VALUE="0.22168" BBK_DIFF_A="-2.1009"/>
      <bbk:Obs TIME_PERIOD="2003-07-09" OBS_VALUE="2.32258" BBK_DIFF_A="0.20311"/>
      <bbk:Obs TIME_PERIOD="2003-07-08" OBS_VALUE="2.11947" BBK_DIFF_A="-0.37046"/>
      <bbk:Obs TIME_PERIOD="2003-07-07" OBS_VALUE="2.48993" BBK_DIFF_A="0.45782"/>
      <bbk:Obs TIME_PERIOD="2003-07-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-07-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-07-04" OBS_VALUE="2.03211" BBK_DIFF_A="1.11748"/>
      <bbk:Obs TIME_PERIOD="2003-07-03" OBS_VALUE="0.91463" BBK_DIFF_A="-1.40775"/>
      <bbk:Obs TIME_PERIOD="2003-07-02" OBS_VALUE="2.32238" BBK_DIFF_A="-0.06771"/>
      <bbk:Obs TIME_PERIOD="2003-07-01" OBS_VALUE="2.39009" BBK_DIFF_A="-0.12695"/>
      <bbk:Obs TIME_PERIOD="2003-06-30" OBS_VALUE="2.51704" BBK_DIFF_A="0.07645"/>
      <bbk:Obs TIME_PERIOD="2003-06-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-06-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-06-27" OBS_VALUE="2.44059" BBK_DIFF_A="0.0735"/>
      <bbk:Obs TIME_PERIOD="2003-06-26" OBS_VALUE="2.36709" BBK_DIFF_A="0.00116"/>
      <bbk:Obs TIME_PERIOD="2003-06-25" OBS_VALUE="2.36593" BBK_DIFF_A="-0.04607"/>
      <bbk:Obs TIME_PERIOD="2003-06-24" OBS_VALUE="2.412" BBK_DIFF_A="1.40908"/>
      <bbk:Obs TIME_PERIOD="2003-06-23" OBS_VALUE="1.00292" BBK_DIFF_A="-1.30438"/>
      <bbk:Obs TIME_PERIOD="2003-06-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-06-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-06-20" OBS_VALUE="2.3073" BBK_DIFF_A="1.23696"/>
      <bbk:Obs TIME_PERIOD="2003-06-19" OBS_VALUE="1.07034" BBK_DIFF_A="-1.55488"/>
      <bbk:Obs TIME_PERIOD="2003-06-18" OBS_VALUE="2.62522" BBK_DIFF_A="1.59417"/>
      <bbk:Obs TIME_PERIOD="2003-06-17" OBS_VALUE="1.03105" BBK_DIFF_A="-1.38785"/>
      <bbk:Obs TIME_PERIOD="2003-06-16" OBS_VALUE="2.4189" BBK_DIFF_A="1.81197"/>
      <bbk:Obs TIME_PERIOD="2003-06-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-06-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-06-13" OBS_VALUE="0.60693" BBK_DIFF_A="-1.6024"/>
      <bbk:Obs TIME_PERIOD="2003-06-12" OBS_VALUE="2.20933" BBK_DIFF_A="0.42173"/>
      <bbk:Obs TIME_PERIOD="2003-06-11" OBS_VALUE="1.7876" BBK_DIFF_A="1.15829"/>
      <bbk:Obs TIME_PERIOD="2003-06-10" OBS_VALUE="0.62931" BBK_DIFF_A="0.62921"/>
      <bbk:Obs TIME_PERIOD="2003-06-09" OBS_VALUE="1.0E-4" BBK_DIFF_A="-6.4E-4"/>
      <bbk:Obs TIME_PERIOD="2003-06-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-06-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-06-06" OBS_VALUE="7.4E-4" BBK_DIFF_A="-2.21499"/>
      <bbk:Obs TIME_PERIOD="2003-06-05" OBS_VALUE="2.21573" BBK_DIFF_A="0.03272"/>
      <bbk:Obs TIME_PERIOD="2003-06-04" OBS_VALUE="2.18301" BBK_DIFF_A="0.03962"/>
      <bbk:Obs TIME_PERIOD="2003-06-03" OBS_VALUE="2.14339" BBK_DIFF_A="-0.10694"/>
      <bbk:Obs TIME_PERIOD="2003-06-02" OBS_VALUE="2.25033" BBK_DIFF_A="2.25023"/>
      <bbk:Obs TIME_PERIOD="2003-06-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-05-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-05-30" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.22247"/>
      <bbk:Obs TIME_PERIOD="2003-05-29" OBS_VALUE="0.22257" BBK_DIFF_A="0.11211"/>
      <bbk:Obs TIME_PERIOD="2003-05-28" OBS_VALUE="0.11046" BBK_DIFF_A="-1.05811"/>
      <bbk:Obs TIME_PERIOD="2003-05-27" OBS_VALUE="1.16857" BBK_DIFF_A="0.54882"/>
      <bbk:Obs TIME_PERIOD="2003-05-26" OBS_VALUE="0.61975" BBK_DIFF_A="0.61965"/>
      <bbk:Obs TIME_PERIOD="2003-05-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-05-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-05-23" OBS_VALUE="1.0E-4" BBK_DIFF_A="-1.97706"/>
      <bbk:Obs TIME_PERIOD="2003-05-22" OBS_VALUE="1.97716" BBK_DIFF_A="1.97706"/>
      <bbk:Obs TIME_PERIOD="2003-05-21" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2003-05-20" OBS_VALUE="1.0E-4" BBK_DIFF_A="-1.17937"/>
      <bbk:Obs TIME_PERIOD="2003-05-19" OBS_VALUE="1.17947" BBK_DIFF_A="1.17937"/>
      <bbk:Obs TIME_PERIOD="2003-05-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-05-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-05-16" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2003-05-15" OBS_VALUE="1.0E-4" BBK_DIFF_A="-1.00949"/>
      <bbk:Obs TIME_PERIOD="2003-05-14" OBS_VALUE="1.00959" BBK_DIFF_A="1.00949"/>
      <bbk:Obs TIME_PERIOD="2003-05-13" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.89516"/>
      <bbk:Obs TIME_PERIOD="2003-05-12" OBS_VALUE="0.89526" BBK_DIFF_A="0.89516"/>
      <bbk:Obs TIME_PERIOD="2003-05-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-05-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-05-09" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.07751"/>
      <bbk:Obs TIME_PERIOD="2003-05-08" OBS_VALUE="0.07761" BBK_DIFF_A="-0.79827"/>
      <bbk:Obs TIME_PERIOD="2003-05-07" OBS_VALUE="0.87588" BBK_DIFF_A="0.0073"/>
      <bbk:Obs TIME_PERIOD="2003-05-06" OBS_VALUE="0.86858" BBK_DIFF_A="0.00983"/>
      <bbk:Obs TIME_PERIOD="2003-05-05" OBS_VALUE="0.85875" BBK_DIFF_A="0.40911"/>
      <bbk:Obs TIME_PERIOD="2003-05-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-05-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-05-02" OBS_VALUE="0.44964" BBK_DIFF_A="-1.20292"/>
      <bbk:Obs TIME_PERIOD="2003-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-04-30" OBS_VALUE="1.65256" BBK_DIFF_A="0.01756"/>
      <bbk:Obs TIME_PERIOD="2003-04-29" OBS_VALUE="1.635" BBK_DIFF_A="-0.07325"/>
      <bbk:Obs TIME_PERIOD="2003-04-28" OBS_VALUE="1.70825" BBK_DIFF_A="0.88617"/>
      <bbk:Obs TIME_PERIOD="2003-04-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-04-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-04-25" OBS_VALUE="0.82208" BBK_DIFF_A="-0.84804"/>
      <bbk:Obs TIME_PERIOD="2003-04-24" OBS_VALUE="1.67012" BBK_DIFF_A="-0.10041"/>
      <bbk:Obs TIME_PERIOD="2003-04-23" OBS_VALUE="1.77053" BBK_DIFF_A="0.14922"/>
      <bbk:Obs TIME_PERIOD="2003-04-22" OBS_VALUE="1.62131" BBK_DIFF_A="-0.18464"/>
      <bbk:Obs TIME_PERIOD="2003-04-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-04-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-04-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-04-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-04-17" OBS_VALUE="1.80595" BBK_DIFF_A="0.20453"/>
      <bbk:Obs TIME_PERIOD="2003-04-16" OBS_VALUE="1.60142" BBK_DIFF_A="0.01353"/>
      <bbk:Obs TIME_PERIOD="2003-04-15" OBS_VALUE="1.58789" BBK_DIFF_A="0.02339"/>
      <bbk:Obs TIME_PERIOD="2003-04-14" OBS_VALUE="1.5645" BBK_DIFF_A="0.10648"/>
      <bbk:Obs TIME_PERIOD="2003-04-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-04-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-04-11" OBS_VALUE="1.45802" BBK_DIFF_A="-0.03766"/>
      <bbk:Obs TIME_PERIOD="2003-04-10" OBS_VALUE="1.49568" BBK_DIFF_A="0.20128"/>
      <bbk:Obs TIME_PERIOD="2003-04-09" OBS_VALUE="1.2944" BBK_DIFF_A="0.62568"/>
      <bbk:Obs TIME_PERIOD="2003-04-08" OBS_VALUE="0.66872" BBK_DIFF_A="-0.64796"/>
      <bbk:Obs TIME_PERIOD="2003-04-07" OBS_VALUE="1.31668" BBK_DIFF_A="-0.20316"/>
      <bbk:Obs TIME_PERIOD="2003-04-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-04-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-04-04" OBS_VALUE="1.51984" BBK_DIFF_A="0.83954"/>
      <bbk:Obs TIME_PERIOD="2003-04-03" OBS_VALUE="0.6803" BBK_DIFF_A="0.11537"/>
      <bbk:Obs TIME_PERIOD="2003-04-02" OBS_VALUE="0.56493" BBK_DIFF_A="-0.42504"/>
      <bbk:Obs TIME_PERIOD="2003-04-01" OBS_VALUE="0.98997" BBK_DIFF_A="0.09492"/>
      <bbk:Obs TIME_PERIOD="2003-03-31" OBS_VALUE="0.89505" BBK_DIFF_A="-0.91643"/>
      <bbk:Obs TIME_PERIOD="2003-03-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-03-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-03-28" OBS_VALUE="1.81148" BBK_DIFF_A="0.01598"/>
      <bbk:Obs TIME_PERIOD="2003-03-27" OBS_VALUE="1.7955" BBK_DIFF_A="1.30881"/>
      <bbk:Obs TIME_PERIOD="2003-03-26" OBS_VALUE="0.48669" BBK_DIFF_A="-1.54315"/>
      <bbk:Obs TIME_PERIOD="2003-03-25" OBS_VALUE="2.02984" BBK_DIFF_A="1.90476"/>
      <bbk:Obs TIME_PERIOD="2003-03-24" OBS_VALUE="0.12508" BBK_DIFF_A="-1.53863"/>
      <bbk:Obs TIME_PERIOD="2003-03-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-03-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-03-21" OBS_VALUE="1.66371" BBK_DIFF_A="0.28979"/>
      <bbk:Obs TIME_PERIOD="2003-03-20" OBS_VALUE="1.37392" BBK_DIFF_A="-0.47359"/>
      <bbk:Obs TIME_PERIOD="2003-03-19" OBS_VALUE="1.84751" BBK_DIFF_A="0.10094"/>
      <bbk:Obs TIME_PERIOD="2003-03-18" OBS_VALUE="1.74657" BBK_DIFF_A="-0.01669"/>
      <bbk:Obs TIME_PERIOD="2003-03-17" OBS_VALUE="1.76326" BBK_DIFF_A="0.45391"/>
      <bbk:Obs TIME_PERIOD="2003-03-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-03-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-03-14" OBS_VALUE="1.30935" BBK_DIFF_A="0.27998"/>
      <bbk:Obs TIME_PERIOD="2003-03-13" OBS_VALUE="1.02937" BBK_DIFF_A="-1.85144"/>
      <bbk:Obs TIME_PERIOD="2003-03-12" OBS_VALUE="2.88081" BBK_DIFF_A="0.42653"/>
      <bbk:Obs TIME_PERIOD="2003-03-11" OBS_VALUE="2.45428" BBK_DIFF_A="0.41004"/>
      <bbk:Obs TIME_PERIOD="2003-03-10" OBS_VALUE="2.04424" BBK_DIFF_A="0.94991"/>
      <bbk:Obs TIME_PERIOD="2003-03-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-03-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-03-07" OBS_VALUE="1.09433" BBK_DIFF_A="-0.29047"/>
      <bbk:Obs TIME_PERIOD="2003-03-06" OBS_VALUE="1.3848" BBK_DIFF_A="1.29658"/>
      <bbk:Obs TIME_PERIOD="2003-03-05" OBS_VALUE="0.08822" BBK_DIFF_A="-0.9995"/>
      <bbk:Obs TIME_PERIOD="2003-03-04" OBS_VALUE="1.08772" BBK_DIFF_A="-0.09961"/>
      <bbk:Obs TIME_PERIOD="2003-03-03" OBS_VALUE="1.18733" BBK_DIFF_A="1.18723"/>
      <bbk:Obs TIME_PERIOD="2003-03-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-03-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-02-28" OBS_VALUE="1.0E-4" BBK_DIFF_A="-1.2879"/>
      <bbk:Obs TIME_PERIOD="2003-02-27" OBS_VALUE="1.288" BBK_DIFF_A="1.2879"/>
      <bbk:Obs TIME_PERIOD="2003-02-26" OBS_VALUE="1.0E-4" BBK_DIFF_A="-1.03553"/>
      <bbk:Obs TIME_PERIOD="2003-02-25" OBS_VALUE="1.03563" BBK_DIFF_A="0.91354"/>
      <bbk:Obs TIME_PERIOD="2003-02-24" OBS_VALUE="0.12209" BBK_DIFF_A="-0.93888"/>
      <bbk:Obs TIME_PERIOD="2003-02-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-02-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-02-21" OBS_VALUE="1.06097" BBK_DIFF_A="-0.25579"/>
      <bbk:Obs TIME_PERIOD="2003-02-20" OBS_VALUE="1.31676" BBK_DIFF_A="0.03472"/>
      <bbk:Obs TIME_PERIOD="2003-02-19" OBS_VALUE="1.28204" BBK_DIFF_A="0.15561"/>
      <bbk:Obs TIME_PERIOD="2003-02-18" OBS_VALUE="1.12643" BBK_DIFF_A="0.10158"/>
      <bbk:Obs TIME_PERIOD="2003-02-17" OBS_VALUE="1.02485" BBK_DIFF_A="-0.07997"/>
      <bbk:Obs TIME_PERIOD="2003-02-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-02-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-02-14" OBS_VALUE="1.10482" BBK_DIFF_A="0.24074"/>
      <bbk:Obs TIME_PERIOD="2003-02-13" OBS_VALUE="0.86408" BBK_DIFF_A="0.18992"/>
      <bbk:Obs TIME_PERIOD="2003-02-12" OBS_VALUE="0.67416" BBK_DIFF_A="-0.94763"/>
      <bbk:Obs TIME_PERIOD="2003-02-11" OBS_VALUE="1.62179" BBK_DIFF_A="0.05329"/>
      <bbk:Obs TIME_PERIOD="2003-02-10" OBS_VALUE="1.5685" BBK_DIFF_A="0.03439"/>
      <bbk:Obs TIME_PERIOD="2003-02-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-02-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-02-07" OBS_VALUE="1.53411" BBK_DIFF_A="-0.08628"/>
      <bbk:Obs TIME_PERIOD="2003-02-06" OBS_VALUE="1.62039" BBK_DIFF_A="0.05726"/>
      <bbk:Obs TIME_PERIOD="2003-02-05" OBS_VALUE="1.56313" BBK_DIFF_A="0.52557"/>
      <bbk:Obs TIME_PERIOD="2003-02-04" OBS_VALUE="1.03756" BBK_DIFF_A="0.09632"/>
      <bbk:Obs TIME_PERIOD="2003-02-03" OBS_VALUE="0.94124" BBK_DIFF_A="0.12451"/>
      <bbk:Obs TIME_PERIOD="2003-02-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-02-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-01-31" OBS_VALUE="0.81673" BBK_DIFF_A="0.05939"/>
      <bbk:Obs TIME_PERIOD="2003-01-30" OBS_VALUE="0.75734" BBK_DIFF_A="-0.02076"/>
      <bbk:Obs TIME_PERIOD="2003-01-29" OBS_VALUE="0.7781" BBK_DIFF_A="-0.48744"/>
      <bbk:Obs TIME_PERIOD="2003-01-28" OBS_VALUE="1.26554" BBK_DIFF_A="0.51808"/>
      <bbk:Obs TIME_PERIOD="2003-01-27" OBS_VALUE="0.74746" BBK_DIFF_A="-0.51391"/>
      <bbk:Obs TIME_PERIOD="2003-01-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-01-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-01-24" OBS_VALUE="1.26137" BBK_DIFF_A="-0.95185"/>
      <bbk:Obs TIME_PERIOD="2003-01-23" OBS_VALUE="2.21322" BBK_DIFF_A="2.10451"/>
      <bbk:Obs TIME_PERIOD="2003-01-22" OBS_VALUE="0.10871" BBK_DIFF_A="-0.89296"/>
      <bbk:Obs TIME_PERIOD="2003-01-21" OBS_VALUE="1.00167" BBK_DIFF_A="-0.26692"/>
      <bbk:Obs TIME_PERIOD="2003-01-20" OBS_VALUE="1.26859" BBK_DIFF_A="0.15326"/>
      <bbk:Obs TIME_PERIOD="2003-01-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-01-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-01-17" OBS_VALUE="1.11533" BBK_DIFF_A="-0.30583"/>
      <bbk:Obs TIME_PERIOD="2003-01-16" OBS_VALUE="1.42116" BBK_DIFF_A="-0.14434"/>
      <bbk:Obs TIME_PERIOD="2003-01-15" OBS_VALUE="1.5655" BBK_DIFF_A="-0.32438"/>
      <bbk:Obs TIME_PERIOD="2003-01-14" OBS_VALUE="1.88988" BBK_DIFF_A="0.78418"/>
      <bbk:Obs TIME_PERIOD="2003-01-13" OBS_VALUE="1.1057" BBK_DIFF_A="-0.72227"/>
      <bbk:Obs TIME_PERIOD="2003-01-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-01-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-01-10" OBS_VALUE="1.82797" BBK_DIFF_A="0.56901"/>
      <bbk:Obs TIME_PERIOD="2003-01-09" OBS_VALUE="1.25896" BBK_DIFF_A="0.34542"/>
      <bbk:Obs TIME_PERIOD="2003-01-08" OBS_VALUE="0.91354" BBK_DIFF_A="-0.43708"/>
      <bbk:Obs TIME_PERIOD="2003-01-07" OBS_VALUE="1.35062" BBK_DIFF_A="0.19584"/>
      <bbk:Obs TIME_PERIOD="2003-01-06" OBS_VALUE="1.15478" BBK_DIFF_A="0.30629"/>
      <bbk:Obs TIME_PERIOD="2003-01-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-01-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2003-01-03" OBS_VALUE="0.84849" BBK_DIFF_A="-0.22051"/>
      <bbk:Obs TIME_PERIOD="2003-01-02" OBS_VALUE="1.069" BBK_DIFF_A="-1.20426"/>
      <bbk:Obs TIME_PERIOD="2003-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-12-30" OBS_VALUE="2.27326" BBK_DIFF_A="1.44414"/>
      <bbk:Obs TIME_PERIOD="2002-12-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-12-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-12-27" OBS_VALUE="0.82912" BBK_DIFF_A="-0.3173"/>
      <bbk:Obs TIME_PERIOD="2002-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-12-23" OBS_VALUE="1.14642" BBK_DIFF_A="0.11045"/>
      <bbk:Obs TIME_PERIOD="2002-12-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-12-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-12-20" OBS_VALUE="1.03597" BBK_DIFF_A="0.56545"/>
      <bbk:Obs TIME_PERIOD="2002-12-19" OBS_VALUE="0.47052" BBK_DIFF_A="-1.76805"/>
      <bbk:Obs TIME_PERIOD="2002-12-18" OBS_VALUE="2.23857" BBK_DIFF_A="1.3145"/>
      <bbk:Obs TIME_PERIOD="2002-12-17" OBS_VALUE="0.92407" BBK_DIFF_A="0.89671"/>
      <bbk:Obs TIME_PERIOD="2002-12-16" OBS_VALUE="0.02736" BBK_DIFF_A="-1.31486"/>
      <bbk:Obs TIME_PERIOD="2002-12-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-12-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-12-13" OBS_VALUE="1.34222" BBK_DIFF_A="0.59327"/>
      <bbk:Obs TIME_PERIOD="2002-12-12" OBS_VALUE="0.74895" BBK_DIFF_A="-0.1532"/>
      <bbk:Obs TIME_PERIOD="2002-12-11" OBS_VALUE="0.90215" BBK_DIFF_A="-0.01023"/>
      <bbk:Obs TIME_PERIOD="2002-12-10" OBS_VALUE="0.91238" BBK_DIFF_A="-0.20971"/>
      <bbk:Obs TIME_PERIOD="2002-12-09" OBS_VALUE="1.12209" BBK_DIFF_A="-0.49859"/>
      <bbk:Obs TIME_PERIOD="2002-12-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-12-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-12-06" OBS_VALUE="1.62068" BBK_DIFF_A="-0.92593"/>
      <bbk:Obs TIME_PERIOD="2002-12-05" OBS_VALUE="2.54661" BBK_DIFF_A="0.18069"/>
      <bbk:Obs TIME_PERIOD="2002-12-04" OBS_VALUE="2.36592" BBK_DIFF_A="0.05964"/>
      <bbk:Obs TIME_PERIOD="2002-12-03" OBS_VALUE="2.30628" BBK_DIFF_A="-0.78572"/>
      <bbk:Obs TIME_PERIOD="2002-12-02" OBS_VALUE="3.092" BBK_DIFF_A="1.50065"/>
      <bbk:Obs TIME_PERIOD="2002-12-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-11-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-11-29" OBS_VALUE="1.59135" BBK_DIFF_A="-0.90813"/>
      <bbk:Obs TIME_PERIOD="2002-11-28" OBS_VALUE="2.49948" BBK_DIFF_A="0.68067"/>
      <bbk:Obs TIME_PERIOD="2002-11-27" OBS_VALUE="1.81881" BBK_DIFF_A="0.21328"/>
      <bbk:Obs TIME_PERIOD="2002-11-26" OBS_VALUE="1.60553" BBK_DIFF_A="1.00176"/>
      <bbk:Obs TIME_PERIOD="2002-11-25" OBS_VALUE="0.60377" BBK_DIFF_A="-0.22551"/>
      <bbk:Obs TIME_PERIOD="2002-11-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-11-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-11-22" OBS_VALUE="0.82928" BBK_DIFF_A="0.01743"/>
      <bbk:Obs TIME_PERIOD="2002-11-21" OBS_VALUE="0.81185" BBK_DIFF_A="0.15005"/>
      <bbk:Obs TIME_PERIOD="2002-11-20" OBS_VALUE="0.6618" BBK_DIFF_A="-0.22824"/>
      <bbk:Obs TIME_PERIOD="2002-11-19" OBS_VALUE="0.89004" BBK_DIFF_A="0.13348"/>
      <bbk:Obs TIME_PERIOD="2002-11-18" OBS_VALUE="0.75656" BBK_DIFF_A="0.07846"/>
      <bbk:Obs TIME_PERIOD="2002-11-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-11-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-11-15" OBS_VALUE="0.6781" BBK_DIFF_A="-0.08067"/>
      <bbk:Obs TIME_PERIOD="2002-11-14" OBS_VALUE="0.75877" BBK_DIFF_A="0.01077"/>
      <bbk:Obs TIME_PERIOD="2002-11-13" OBS_VALUE="0.748" BBK_DIFF_A="0.06519"/>
      <bbk:Obs TIME_PERIOD="2002-11-12" OBS_VALUE="0.68281" BBK_DIFF_A="-1.32785"/>
      <bbk:Obs TIME_PERIOD="2002-11-11" OBS_VALUE="2.01066" BBK_DIFF_A="1.0483"/>
      <bbk:Obs TIME_PERIOD="2002-11-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-11-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-11-08" OBS_VALUE="0.96236" BBK_DIFF_A="-1.7E-4"/>
      <bbk:Obs TIME_PERIOD="2002-11-07" OBS_VALUE="0.96253" BBK_DIFF_A="-0.42356"/>
      <bbk:Obs TIME_PERIOD="2002-11-06" OBS_VALUE="1.38609" BBK_DIFF_A="-0.06562"/>
      <bbk:Obs TIME_PERIOD="2002-11-05" OBS_VALUE="1.45171" BBK_DIFF_A="0.53219"/>
      <bbk:Obs TIME_PERIOD="2002-11-04" OBS_VALUE="0.91952" BBK_DIFF_A="-0.43065"/>
      <bbk:Obs TIME_PERIOD="2002-11-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-11-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-11-01" OBS_VALUE="1.35017" BBK_DIFF_A="0.64278"/>
      <bbk:Obs TIME_PERIOD="2002-10-31" OBS_VALUE="0.70739" BBK_DIFF_A="-0.3063"/>
      <bbk:Obs TIME_PERIOD="2002-10-30" OBS_VALUE="1.01369" BBK_DIFF_A="-1.15031"/>
      <bbk:Obs TIME_PERIOD="2002-10-29" OBS_VALUE="2.164" BBK_DIFF_A="0.58942"/>
      <bbk:Obs TIME_PERIOD="2002-10-28" OBS_VALUE="1.57458" BBK_DIFF_A="-0.01269"/>
      <bbk:Obs TIME_PERIOD="2002-10-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-10-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-10-25" OBS_VALUE="1.58727" BBK_DIFF_A="-0.98903"/>
      <bbk:Obs TIME_PERIOD="2002-10-24" OBS_VALUE="2.5763" BBK_DIFF_A="-0.09519"/>
      <bbk:Obs TIME_PERIOD="2002-10-23" OBS_VALUE="2.67149" BBK_DIFF_A="1.90041"/>
      <bbk:Obs TIME_PERIOD="2002-10-22" OBS_VALUE="0.77108" BBK_DIFF_A="-1.48683"/>
      <bbk:Obs TIME_PERIOD="2002-10-21" OBS_VALUE="2.25791" BBK_DIFF_A="-0.09524"/>
      <bbk:Obs TIME_PERIOD="2002-10-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-10-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-10-18" OBS_VALUE="2.35315" BBK_DIFF_A="0.77976"/>
      <bbk:Obs TIME_PERIOD="2002-10-17" OBS_VALUE="1.57339" BBK_DIFF_A="-0.64188"/>
      <bbk:Obs TIME_PERIOD="2002-10-16" OBS_VALUE="2.21527" BBK_DIFF_A="1.62732"/>
      <bbk:Obs TIME_PERIOD="2002-10-15" OBS_VALUE="0.58795" BBK_DIFF_A="-0.35195"/>
      <bbk:Obs TIME_PERIOD="2002-10-14" OBS_VALUE="0.9399" BBK_DIFF_A="-0.44384"/>
      <bbk:Obs TIME_PERIOD="2002-10-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-10-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-10-11" OBS_VALUE="1.38374" BBK_DIFF_A="0.74234"/>
      <bbk:Obs TIME_PERIOD="2002-10-10" OBS_VALUE="0.6414" BBK_DIFF_A="-0.08032"/>
      <bbk:Obs TIME_PERIOD="2002-10-09" OBS_VALUE="0.72172" BBK_DIFF_A="-0.08024"/>
      <bbk:Obs TIME_PERIOD="2002-10-08" OBS_VALUE="0.80196" BBK_DIFF_A="0.03059"/>
      <bbk:Obs TIME_PERIOD="2002-10-07" OBS_VALUE="0.77137" BBK_DIFF_A="0.16954"/>
      <bbk:Obs TIME_PERIOD="2002-10-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-10-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-10-04" OBS_VALUE="0.60183" BBK_DIFF_A="-0.02928"/>
      <bbk:Obs TIME_PERIOD="2002-10-03" OBS_VALUE="0.63111" BBK_DIFF_A="-0.00778"/>
      <bbk:Obs TIME_PERIOD="2002-10-02" OBS_VALUE="0.63889" BBK_DIFF_A="-0.13628"/>
      <bbk:Obs TIME_PERIOD="2002-10-01" OBS_VALUE="0.77517" BBK_DIFF_A="-0.05591"/>
      <bbk:Obs TIME_PERIOD="2002-09-30" OBS_VALUE="0.83108" BBK_DIFF_A="0.24739"/>
      <bbk:Obs TIME_PERIOD="2002-09-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-09-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-09-27" OBS_VALUE="0.58369" BBK_DIFF_A="-1.22756"/>
      <bbk:Obs TIME_PERIOD="2002-09-26" OBS_VALUE="1.81125" BBK_DIFF_A="1.08568"/>
      <bbk:Obs TIME_PERIOD="2002-09-25" OBS_VALUE="0.72557" BBK_DIFF_A="0.10973"/>
      <bbk:Obs TIME_PERIOD="2002-09-24" OBS_VALUE="0.61584" BBK_DIFF_A="-0.25308"/>
      <bbk:Obs TIME_PERIOD="2002-09-23" OBS_VALUE="0.86892" BBK_DIFF_A="-0.7786"/>
      <bbk:Obs TIME_PERIOD="2002-09-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-09-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-09-20" OBS_VALUE="1.64752" BBK_DIFF_A="-0.74767"/>
      <bbk:Obs TIME_PERIOD="2002-09-19" OBS_VALUE="2.39519" BBK_DIFF_A="0.74692"/>
      <bbk:Obs TIME_PERIOD="2002-09-18" OBS_VALUE="1.64827" BBK_DIFF_A="-0.88167"/>
      <bbk:Obs TIME_PERIOD="2002-09-17" OBS_VALUE="2.52994" BBK_DIFF_A="-0.99455"/>
      <bbk:Obs TIME_PERIOD="2002-09-16" OBS_VALUE="3.52449" BBK_DIFF_A="1.22355"/>
      <bbk:Obs TIME_PERIOD="2002-09-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-09-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-09-13" OBS_VALUE="2.30094" BBK_DIFF_A="-0.01596"/>
      <bbk:Obs TIME_PERIOD="2002-09-12" OBS_VALUE="2.3169" BBK_DIFF_A="-0.03943"/>
      <bbk:Obs TIME_PERIOD="2002-09-11" OBS_VALUE="2.35633" BBK_DIFF_A="0.10623"/>
      <bbk:Obs TIME_PERIOD="2002-09-10" OBS_VALUE="2.2501" BBK_DIFF_A="0.28185"/>
      <bbk:Obs TIME_PERIOD="2002-09-09" OBS_VALUE="1.96825" BBK_DIFF_A="0.06933"/>
      <bbk:Obs TIME_PERIOD="2002-09-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-09-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-09-06" OBS_VALUE="1.89892" BBK_DIFF_A="0.1026"/>
      <bbk:Obs TIME_PERIOD="2002-09-05" OBS_VALUE="1.79632" BBK_DIFF_A="-0.0906"/>
      <bbk:Obs TIME_PERIOD="2002-09-04" OBS_VALUE="1.88692" BBK_DIFF_A="-1.40781"/>
      <bbk:Obs TIME_PERIOD="2002-09-03" OBS_VALUE="3.29473" BBK_DIFF_A="0.43279"/>
      <bbk:Obs TIME_PERIOD="2002-09-02" OBS_VALUE="2.86194" BBK_DIFF_A="-1.14391"/>
      <bbk:Obs TIME_PERIOD="2002-09-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-08-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-08-30" OBS_VALUE="4.00585" BBK_DIFF_A="1.68972"/>
      <bbk:Obs TIME_PERIOD="2002-08-29" OBS_VALUE="2.31613" BBK_DIFF_A="0.07917"/>
      <bbk:Obs TIME_PERIOD="2002-08-28" OBS_VALUE="2.23696" BBK_DIFF_A="-0.05837"/>
      <bbk:Obs TIME_PERIOD="2002-08-27" OBS_VALUE="2.29533" BBK_DIFF_A="-0.09154"/>
      <bbk:Obs TIME_PERIOD="2002-08-26" OBS_VALUE="2.38687" BBK_DIFF_A="-0.04508"/>
      <bbk:Obs TIME_PERIOD="2002-08-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-08-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-08-23" OBS_VALUE="2.43195" BBK_DIFF_A="-1.12044"/>
      <bbk:Obs TIME_PERIOD="2002-08-22" OBS_VALUE="3.55239" BBK_DIFF_A="0.76985"/>
      <bbk:Obs TIME_PERIOD="2002-08-21" OBS_VALUE="2.78254" BBK_DIFF_A="0.4203"/>
      <bbk:Obs TIME_PERIOD="2002-08-20" OBS_VALUE="2.36224" BBK_DIFF_A="-0.08333"/>
      <bbk:Obs TIME_PERIOD="2002-08-19" OBS_VALUE="2.44557" BBK_DIFF_A="0.21932"/>
      <bbk:Obs TIME_PERIOD="2002-08-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-08-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-08-16" OBS_VALUE="2.22625" BBK_DIFF_A="-0.55818"/>
      <bbk:Obs TIME_PERIOD="2002-08-15" OBS_VALUE="2.78443" BBK_DIFF_A="-0.17923"/>
      <bbk:Obs TIME_PERIOD="2002-08-14" OBS_VALUE="2.96366" BBK_DIFF_A="0.66938"/>
      <bbk:Obs TIME_PERIOD="2002-08-13" OBS_VALUE="2.29428" BBK_DIFF_A="0.05779"/>
      <bbk:Obs TIME_PERIOD="2002-08-12" OBS_VALUE="2.23649" BBK_DIFF_A="-0.28278"/>
      <bbk:Obs TIME_PERIOD="2002-08-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-08-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-08-09" OBS_VALUE="2.51927" BBK_DIFF_A="0.38619"/>
      <bbk:Obs TIME_PERIOD="2002-08-08" OBS_VALUE="2.13308" BBK_DIFF_A="-0.07372"/>
      <bbk:Obs TIME_PERIOD="2002-08-07" OBS_VALUE="2.2068" BBK_DIFF_A="0.15332"/>
      <bbk:Obs TIME_PERIOD="2002-08-06" OBS_VALUE="2.05348" BBK_DIFF_A="-0.0743"/>
      <bbk:Obs TIME_PERIOD="2002-08-05" OBS_VALUE="2.12778" BBK_DIFF_A="0.20714"/>
      <bbk:Obs TIME_PERIOD="2002-08-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-08-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-08-02" OBS_VALUE="1.92064" BBK_DIFF_A="-0.21995"/>
      <bbk:Obs TIME_PERIOD="2002-08-01" OBS_VALUE="2.14059" BBK_DIFF_A="0.06426"/>
      <bbk:Obs TIME_PERIOD="2002-07-31" OBS_VALUE="2.07633" BBK_DIFF_A="-0.31647"/>
      <bbk:Obs TIME_PERIOD="2002-07-30" OBS_VALUE="2.3928" BBK_DIFF_A="0.17164"/>
      <bbk:Obs TIME_PERIOD="2002-07-29" OBS_VALUE="2.22116" BBK_DIFF_A="0.14929"/>
      <bbk:Obs TIME_PERIOD="2002-07-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-07-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-07-26" OBS_VALUE="2.07187" BBK_DIFF_A="-0.19588"/>
      <bbk:Obs TIME_PERIOD="2002-07-25" OBS_VALUE="2.26775" BBK_DIFF_A="0.17699"/>
      <bbk:Obs TIME_PERIOD="2002-07-24" OBS_VALUE="2.09076" BBK_DIFF_A="-0.09098"/>
      <bbk:Obs TIME_PERIOD="2002-07-23" OBS_VALUE="2.18174" BBK_DIFF_A="-0.55511"/>
      <bbk:Obs TIME_PERIOD="2002-07-22" OBS_VALUE="2.73685" BBK_DIFF_A="-0.56397"/>
      <bbk:Obs TIME_PERIOD="2002-07-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-07-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-07-19" OBS_VALUE="3.30082" BBK_DIFF_A="1.10858"/>
      <bbk:Obs TIME_PERIOD="2002-07-18" OBS_VALUE="2.19224" BBK_DIFF_A="0.2484"/>
      <bbk:Obs TIME_PERIOD="2002-07-17" OBS_VALUE="1.94384" BBK_DIFF_A="-0.22225"/>
      <bbk:Obs TIME_PERIOD="2002-07-16" OBS_VALUE="2.16609" BBK_DIFF_A="-0.33697"/>
      <bbk:Obs TIME_PERIOD="2002-07-15" OBS_VALUE="2.50306" BBK_DIFF_A="0.07157"/>
      <bbk:Obs TIME_PERIOD="2002-07-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-07-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-07-12" OBS_VALUE="2.43149" BBK_DIFF_A="0.3508"/>
      <bbk:Obs TIME_PERIOD="2002-07-11" OBS_VALUE="2.08069" BBK_DIFF_A="-0.02961"/>
      <bbk:Obs TIME_PERIOD="2002-07-10" OBS_VALUE="2.1103" BBK_DIFF_A="-0.71769"/>
      <bbk:Obs TIME_PERIOD="2002-07-09" OBS_VALUE="2.82799" BBK_DIFF_A="0.39316"/>
      <bbk:Obs TIME_PERIOD="2002-07-08" OBS_VALUE="2.43483" BBK_DIFF_A="0.3548"/>
      <bbk:Obs TIME_PERIOD="2002-07-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-07-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-07-05" OBS_VALUE="2.08003" BBK_DIFF_A="0.21445"/>
      <bbk:Obs TIME_PERIOD="2002-07-04" OBS_VALUE="1.86558" BBK_DIFF_A="-0.64532"/>
      <bbk:Obs TIME_PERIOD="2002-07-03" OBS_VALUE="2.5109" BBK_DIFF_A="0.06127"/>
      <bbk:Obs TIME_PERIOD="2002-07-02" OBS_VALUE="2.44963" BBK_DIFF_A="0.07322"/>
      <bbk:Obs TIME_PERIOD="2002-07-01" OBS_VALUE="2.37641" BBK_DIFF_A="0.17544"/>
      <bbk:Obs TIME_PERIOD="2002-06-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-06-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-06-28" OBS_VALUE="2.20097" BBK_DIFF_A="0.39044"/>
      <bbk:Obs TIME_PERIOD="2002-06-27" OBS_VALUE="1.81053" BBK_DIFF_A="0.24754"/>
      <bbk:Obs TIME_PERIOD="2002-06-26" OBS_VALUE="1.56299" BBK_DIFF_A="-0.44966"/>
      <bbk:Obs TIME_PERIOD="2002-06-25" OBS_VALUE="2.01265" BBK_DIFF_A="-0.05637"/>
      <bbk:Obs TIME_PERIOD="2002-06-24" OBS_VALUE="2.06902" BBK_DIFF_A="-0.01069"/>
      <bbk:Obs TIME_PERIOD="2002-06-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-06-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-06-21" OBS_VALUE="2.07971" BBK_DIFF_A="-0.40483"/>
      <bbk:Obs TIME_PERIOD="2002-06-20" OBS_VALUE="2.48454" BBK_DIFF_A="-0.38637"/>
      <bbk:Obs TIME_PERIOD="2002-06-19" OBS_VALUE="2.87091" BBK_DIFF_A="0.49474"/>
      <bbk:Obs TIME_PERIOD="2002-06-18" OBS_VALUE="2.37617" BBK_DIFF_A="-0.1954"/>
      <bbk:Obs TIME_PERIOD="2002-06-17" OBS_VALUE="2.57157" BBK_DIFF_A="-0.05462"/>
      <bbk:Obs TIME_PERIOD="2002-06-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-06-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-06-14" OBS_VALUE="2.62619" BBK_DIFF_A="0.61679"/>
      <bbk:Obs TIME_PERIOD="2002-06-13" OBS_VALUE="2.0094" BBK_DIFF_A="-0.60166"/>
      <bbk:Obs TIME_PERIOD="2002-06-12" OBS_VALUE="2.61106" BBK_DIFF_A="-0.23807"/>
      <bbk:Obs TIME_PERIOD="2002-06-11" OBS_VALUE="2.84913" BBK_DIFF_A="-0.14355"/>
      <bbk:Obs TIME_PERIOD="2002-06-10" OBS_VALUE="2.99268" BBK_DIFF_A="-0.10752"/>
      <bbk:Obs TIME_PERIOD="2002-06-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-06-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-06-07" OBS_VALUE="3.1002" BBK_DIFF_A="0.52788"/>
      <bbk:Obs TIME_PERIOD="2002-06-06" OBS_VALUE="2.57232" BBK_DIFF_A="0.12645"/>
      <bbk:Obs TIME_PERIOD="2002-06-05" OBS_VALUE="2.44587" BBK_DIFF_A="-0.27167"/>
      <bbk:Obs TIME_PERIOD="2002-06-04" OBS_VALUE="2.71754" BBK_DIFF_A="0.58105"/>
      <bbk:Obs TIME_PERIOD="2002-06-03" OBS_VALUE="2.13649" BBK_DIFF_A="-0.04027"/>
      <bbk:Obs TIME_PERIOD="2002-06-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-06-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-05-31" OBS_VALUE="2.17676" BBK_DIFF_A="-0.58797"/>
      <bbk:Obs TIME_PERIOD="2002-05-30" OBS_VALUE="2.76473" BBK_DIFF_A="0.57248"/>
      <bbk:Obs TIME_PERIOD="2002-05-29" OBS_VALUE="2.19225" BBK_DIFF_A="-0.16326"/>
      <bbk:Obs TIME_PERIOD="2002-05-28" OBS_VALUE="2.35551" BBK_DIFF_A="-0.79529"/>
      <bbk:Obs TIME_PERIOD="2002-05-27" OBS_VALUE="3.1508" BBK_DIFF_A="0.99887"/>
      <bbk:Obs TIME_PERIOD="2002-05-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-05-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-05-24" OBS_VALUE="2.15193" BBK_DIFF_A="-0.15453"/>
      <bbk:Obs TIME_PERIOD="2002-05-23" OBS_VALUE="2.30646" BBK_DIFF_A="-0.26605"/>
      <bbk:Obs TIME_PERIOD="2002-05-22" OBS_VALUE="2.57251" BBK_DIFF_A="-0.19998"/>
      <bbk:Obs TIME_PERIOD="2002-05-21" OBS_VALUE="2.77249" BBK_DIFF_A="0.03111"/>
      <bbk:Obs TIME_PERIOD="2002-05-20" OBS_VALUE="2.74138" BBK_DIFF_A="0.90498"/>
      <bbk:Obs TIME_PERIOD="2002-05-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-05-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-05-17" OBS_VALUE="1.8364" BBK_DIFF_A="-0.50034"/>
      <bbk:Obs TIME_PERIOD="2002-05-16" OBS_VALUE="2.33674" BBK_DIFF_A="0.07694"/>
      <bbk:Obs TIME_PERIOD="2002-05-15" OBS_VALUE="2.2598" BBK_DIFF_A="-0.85106"/>
      <bbk:Obs TIME_PERIOD="2002-05-14" OBS_VALUE="3.11086" BBK_DIFF_A="0.54092"/>
      <bbk:Obs TIME_PERIOD="2002-05-13" OBS_VALUE="2.56994" BBK_DIFF_A="-0.56888"/>
      <bbk:Obs TIME_PERIOD="2002-05-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-05-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-05-10" OBS_VALUE="3.13882" BBK_DIFF_A="0.08015"/>
      <bbk:Obs TIME_PERIOD="2002-05-09" OBS_VALUE="3.05867" BBK_DIFF_A="-1.40357"/>
      <bbk:Obs TIME_PERIOD="2002-05-08" OBS_VALUE="4.46224" BBK_DIFF_A="-1.9638"/>
      <bbk:Obs TIME_PERIOD="2002-05-07" OBS_VALUE="6.42604" BBK_DIFF_A="3.06178"/>
      <bbk:Obs TIME_PERIOD="2002-05-06" OBS_VALUE="3.36426" BBK_DIFF_A="-0.55828"/>
      <bbk:Obs TIME_PERIOD="2002-05-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-05-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-05-03" OBS_VALUE="3.92254" BBK_DIFF_A="0.03041"/>
      <bbk:Obs TIME_PERIOD="2002-05-02" OBS_VALUE="3.89213" BBK_DIFF_A="-1.81804"/>
      <bbk:Obs TIME_PERIOD="2002-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-04-30" OBS_VALUE="5.71017" BBK_DIFF_A="2.37524"/>
      <bbk:Obs TIME_PERIOD="2002-04-29" OBS_VALUE="3.33493" BBK_DIFF_A="-1.28405"/>
      <bbk:Obs TIME_PERIOD="2002-04-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-04-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-04-26" OBS_VALUE="4.61898" BBK_DIFF_A="0.92419"/>
      <bbk:Obs TIME_PERIOD="2002-04-25" OBS_VALUE="3.69479" BBK_DIFF_A="-1.55032"/>
      <bbk:Obs TIME_PERIOD="2002-04-24" OBS_VALUE="5.24511" BBK_DIFF_A="0.72844"/>
      <bbk:Obs TIME_PERIOD="2002-04-23" OBS_VALUE="4.51667" BBK_DIFF_A="0.88696"/>
      <bbk:Obs TIME_PERIOD="2002-04-22" OBS_VALUE="3.62971" BBK_DIFF_A="0.11796"/>
      <bbk:Obs TIME_PERIOD="2002-04-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-04-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-04-19" OBS_VALUE="3.51175" BBK_DIFF_A="0.16436"/>
      <bbk:Obs TIME_PERIOD="2002-04-18" OBS_VALUE="3.34739" BBK_DIFF_A="-0.41942"/>
      <bbk:Obs TIME_PERIOD="2002-04-17" OBS_VALUE="3.76681" BBK_DIFF_A="0.27811"/>
      <bbk:Obs TIME_PERIOD="2002-04-16" OBS_VALUE="3.4887" BBK_DIFF_A="0.1556"/>
      <bbk:Obs TIME_PERIOD="2002-04-15" OBS_VALUE="3.3331" BBK_DIFF_A="-0.17341"/>
      <bbk:Obs TIME_PERIOD="2002-04-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-04-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-04-12" OBS_VALUE="3.50651" BBK_DIFF_A="0.42157"/>
      <bbk:Obs TIME_PERIOD="2002-04-11" OBS_VALUE="3.08494" BBK_DIFF_A="-0.48683"/>
      <bbk:Obs TIME_PERIOD="2002-04-10" OBS_VALUE="3.57177" BBK_DIFF_A="-0.28793"/>
      <bbk:Obs TIME_PERIOD="2002-04-09" OBS_VALUE="3.8597" BBK_DIFF_A="0.14965"/>
      <bbk:Obs TIME_PERIOD="2002-04-08" OBS_VALUE="3.71005" BBK_DIFF_A="0.87222"/>
      <bbk:Obs TIME_PERIOD="2002-04-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-04-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-04-05" OBS_VALUE="2.83783" BBK_DIFF_A="-0.19003"/>
      <bbk:Obs TIME_PERIOD="2002-04-04" OBS_VALUE="3.02786" BBK_DIFF_A="-1.18311"/>
      <bbk:Obs TIME_PERIOD="2002-04-03" OBS_VALUE="4.21097" BBK_DIFF_A="0.80212"/>
      <bbk:Obs TIME_PERIOD="2002-04-02" OBS_VALUE="3.40885" BBK_DIFF_A="-0.47811"/>
      <bbk:Obs TIME_PERIOD="2002-04-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-03-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-03-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-03-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-03-28" OBS_VALUE="3.88696" BBK_DIFF_A="0.50058"/>
      <bbk:Obs TIME_PERIOD="2002-03-27" OBS_VALUE="3.38638" BBK_DIFF_A="-0.11914"/>
      <bbk:Obs TIME_PERIOD="2002-03-26" OBS_VALUE="3.50552" BBK_DIFF_A="0.38777"/>
      <bbk:Obs TIME_PERIOD="2002-03-25" OBS_VALUE="3.11775" BBK_DIFF_A="-0.68886"/>
      <bbk:Obs TIME_PERIOD="2002-03-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-03-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-03-22" OBS_VALUE="3.80661" BBK_DIFF_A="0.41987"/>
      <bbk:Obs TIME_PERIOD="2002-03-21" OBS_VALUE="3.38674" BBK_DIFF_A="0.68145"/>
      <bbk:Obs TIME_PERIOD="2002-03-20" OBS_VALUE="2.70529" BBK_DIFF_A="0.22451"/>
      <bbk:Obs TIME_PERIOD="2002-03-19" OBS_VALUE="2.48078" BBK_DIFF_A="-1.22777"/>
      <bbk:Obs TIME_PERIOD="2002-03-18" OBS_VALUE="3.70855" BBK_DIFF_A="1.00266"/>
      <bbk:Obs TIME_PERIOD="2002-03-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-03-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-03-15" OBS_VALUE="2.70589" BBK_DIFF_A="-0.02847"/>
      <bbk:Obs TIME_PERIOD="2002-03-14" OBS_VALUE="2.73436" BBK_DIFF_A="-0.33953"/>
      <bbk:Obs TIME_PERIOD="2002-03-13" OBS_VALUE="3.07389" BBK_DIFF_A="-0.88285"/>
      <bbk:Obs TIME_PERIOD="2002-03-12" OBS_VALUE="3.95674" BBK_DIFF_A="-0.08128"/>
      <bbk:Obs TIME_PERIOD="2002-03-11" OBS_VALUE="4.03802" BBK_DIFF_A="2.73647"/>
      <bbk:Obs TIME_PERIOD="2002-03-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-03-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-03-08" OBS_VALUE="1.30155" BBK_DIFF_A="-2.14485"/>
      <bbk:Obs TIME_PERIOD="2002-03-07" OBS_VALUE="3.4464" BBK_DIFF_A="1.33594"/>
      <bbk:Obs TIME_PERIOD="2002-03-06" OBS_VALUE="2.11046" BBK_DIFF_A="-0.87529"/>
      <bbk:Obs TIME_PERIOD="2002-03-05" OBS_VALUE="2.98575" BBK_DIFF_A="0.45869"/>
      <bbk:Obs TIME_PERIOD="2002-03-04" OBS_VALUE="2.52706" BBK_DIFF_A="-0.42399"/>
      <bbk:Obs TIME_PERIOD="2002-03-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-03-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-03-01" OBS_VALUE="2.95105" BBK_DIFF_A="-0.17418"/>
      <bbk:Obs TIME_PERIOD="2002-02-28" OBS_VALUE="3.12523" BBK_DIFF_A="0.91171"/>
      <bbk:Obs TIME_PERIOD="2002-02-27" OBS_VALUE="2.21352" BBK_DIFF_A="-2.57894"/>
      <bbk:Obs TIME_PERIOD="2002-02-26" OBS_VALUE="4.79246" BBK_DIFF_A="0.54671"/>
      <bbk:Obs TIME_PERIOD="2002-02-25" OBS_VALUE="4.24575" BBK_DIFF_A="0.89767"/>
      <bbk:Obs TIME_PERIOD="2002-02-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-02-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-02-22" OBS_VALUE="3.34808" BBK_DIFF_A="-1.32321"/>
      <bbk:Obs TIME_PERIOD="2002-02-21" OBS_VALUE="4.67129" BBK_DIFF_A="-0.81183"/>
      <bbk:Obs TIME_PERIOD="2002-02-20" OBS_VALUE="5.48312" BBK_DIFF_A="3.23235"/>
      <bbk:Obs TIME_PERIOD="2002-02-19" OBS_VALUE="2.25077" BBK_DIFF_A="-0.88501"/>
      <bbk:Obs TIME_PERIOD="2002-02-18" OBS_VALUE="3.13578" BBK_DIFF_A="0.50227"/>
      <bbk:Obs TIME_PERIOD="2002-02-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-02-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-02-15" OBS_VALUE="2.63351" BBK_DIFF_A="0.87487"/>
      <bbk:Obs TIME_PERIOD="2002-02-14" OBS_VALUE="1.75864" BBK_DIFF_A="-0.45379"/>
      <bbk:Obs TIME_PERIOD="2002-02-13" OBS_VALUE="2.21243" BBK_DIFF_A="-0.96712"/>
      <bbk:Obs TIME_PERIOD="2002-02-12" OBS_VALUE="3.17955" BBK_DIFF_A="0.31324"/>
      <bbk:Obs TIME_PERIOD="2002-02-11" OBS_VALUE="2.86631" BBK_DIFF_A="-0.06931"/>
      <bbk:Obs TIME_PERIOD="2002-02-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-02-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-02-08" OBS_VALUE="2.93562" BBK_DIFF_A="1.35213"/>
      <bbk:Obs TIME_PERIOD="2002-02-07" OBS_VALUE="1.58349" BBK_DIFF_A="-0.18048"/>
      <bbk:Obs TIME_PERIOD="2002-02-06" OBS_VALUE="1.76397" BBK_DIFF_A="0.07602"/>
      <bbk:Obs TIME_PERIOD="2002-02-05" OBS_VALUE="1.68795" BBK_DIFF_A="0.09555"/>
      <bbk:Obs TIME_PERIOD="2002-02-04" OBS_VALUE="1.5924" BBK_DIFF_A="-1.04997"/>
      <bbk:Obs TIME_PERIOD="2002-02-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-02-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-02-01" OBS_VALUE="2.64237" BBK_DIFF_A="0.39237"/>
      <bbk:Obs TIME_PERIOD="2002-01-31" OBS_VALUE="2.25" BBK_DIFF_A="0.73176"/>
      <bbk:Obs TIME_PERIOD="2002-01-30" OBS_VALUE="1.51824" BBK_DIFF_A="-0.40754"/>
      <bbk:Obs TIME_PERIOD="2002-01-29" OBS_VALUE="1.92578" BBK_DIFF_A="-0.0539"/>
      <bbk:Obs TIME_PERIOD="2002-01-28" OBS_VALUE="1.97968" BBK_DIFF_A="0.05907"/>
      <bbk:Obs TIME_PERIOD="2002-01-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-01-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-01-25" OBS_VALUE="1.92061" BBK_DIFF_A="-0.41696"/>
      <bbk:Obs TIME_PERIOD="2002-01-24" OBS_VALUE="2.33757" BBK_DIFF_A="0.07857"/>
      <bbk:Obs TIME_PERIOD="2002-01-23" OBS_VALUE="2.259" BBK_DIFF_A="-0.11721"/>
      <bbk:Obs TIME_PERIOD="2002-01-22" OBS_VALUE="2.37621" BBK_DIFF_A="-0.79353"/>
      <bbk:Obs TIME_PERIOD="2002-01-21" OBS_VALUE="3.16974" BBK_DIFF_A="-0.23518"/>
      <bbk:Obs TIME_PERIOD="2002-01-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-01-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-01-18" OBS_VALUE="3.40492" BBK_DIFF_A="0.21015"/>
      <bbk:Obs TIME_PERIOD="2002-01-17" OBS_VALUE="3.19477" BBK_DIFF_A="0.57312"/>
      <bbk:Obs TIME_PERIOD="2002-01-16" OBS_VALUE="2.62165" BBK_DIFF_A="-0.25929"/>
      <bbk:Obs TIME_PERIOD="2002-01-15" OBS_VALUE="2.88094" BBK_DIFF_A="-0.55765"/>
      <bbk:Obs TIME_PERIOD="2002-01-14" OBS_VALUE="3.43859" BBK_DIFF_A="0.43446"/>
      <bbk:Obs TIME_PERIOD="2002-01-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-01-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-01-11" OBS_VALUE="3.00413" BBK_DIFF_A="-0.34129"/>
      <bbk:Obs TIME_PERIOD="2002-01-10" OBS_VALUE="3.34542" BBK_DIFF_A="1.77032"/>
      <bbk:Obs TIME_PERIOD="2002-01-09" OBS_VALUE="1.5751" BBK_DIFF_A="-0.08911"/>
      <bbk:Obs TIME_PERIOD="2002-01-08" OBS_VALUE="1.66421" BBK_DIFF_A="0.07896"/>
      <bbk:Obs TIME_PERIOD="2002-01-07" OBS_VALUE="1.58525" BBK_DIFF_A="0.11954"/>
      <bbk:Obs TIME_PERIOD="2002-01-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-01-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2002-01-04" OBS_VALUE="1.46571" BBK_DIFF_A="-0.03712"/>
      <bbk:Obs TIME_PERIOD="2002-01-03" OBS_VALUE="1.50283" BBK_DIFF_A="-1.33795"/>
      <bbk:Obs TIME_PERIOD="2002-01-02" OBS_VALUE="2.84078" BBK_DIFF_A="1.20441"/>
      <bbk:Obs TIME_PERIOD="2002-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-12-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-12-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-12-28" OBS_VALUE="1.63637" BBK_DIFF_A="-0.08347"/>
      <bbk:Obs TIME_PERIOD="2001-12-27" OBS_VALUE="1.71984" BBK_DIFF_A="-0.61292"/>
      <bbk:Obs TIME_PERIOD="2001-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-12-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-12-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-12-21" OBS_VALUE="2.33276" BBK_DIFF_A="-0.51975"/>
      <bbk:Obs TIME_PERIOD="2001-12-20" OBS_VALUE="2.85251" BBK_DIFF_A="-0.23967"/>
      <bbk:Obs TIME_PERIOD="2001-12-19" OBS_VALUE="3.09218" BBK_DIFF_A="0.66554"/>
      <bbk:Obs TIME_PERIOD="2001-12-18" OBS_VALUE="2.42664" BBK_DIFF_A="-1.04537"/>
      <bbk:Obs TIME_PERIOD="2001-12-17" OBS_VALUE="3.47201" BBK_DIFF_A="1.94464"/>
      <bbk:Obs TIME_PERIOD="2001-12-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-12-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-12-14" OBS_VALUE="1.52737" BBK_DIFF_A="-0.70449"/>
      <bbk:Obs TIME_PERIOD="2001-12-13" OBS_VALUE="2.23186" BBK_DIFF_A="0.42171"/>
      <bbk:Obs TIME_PERIOD="2001-12-12" OBS_VALUE="1.81015" BBK_DIFF_A="-0.1835"/>
      <bbk:Obs TIME_PERIOD="2001-12-11" OBS_VALUE="1.99365" BBK_DIFF_A="-0.06638"/>
      <bbk:Obs TIME_PERIOD="2001-12-10" OBS_VALUE="2.06003" BBK_DIFF_A="0.25822"/>
      <bbk:Obs TIME_PERIOD="2001-12-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-12-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-12-07" OBS_VALUE="1.80181" BBK_DIFF_A="-0.2905"/>
      <bbk:Obs TIME_PERIOD="2001-12-06" OBS_VALUE="2.09231" BBK_DIFF_A="-1.31474"/>
      <bbk:Obs TIME_PERIOD="2001-12-05" OBS_VALUE="3.40705" BBK_DIFF_A="1.6618"/>
      <bbk:Obs TIME_PERIOD="2001-12-04" OBS_VALUE="1.74525" BBK_DIFF_A="-1.01021"/>
      <bbk:Obs TIME_PERIOD="2001-12-03" OBS_VALUE="2.75546" BBK_DIFF_A="-0.56272"/>
      <bbk:Obs TIME_PERIOD="2001-12-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-12-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-11-30" OBS_VALUE="3.31818" BBK_DIFF_A="-0.01496"/>
      <bbk:Obs TIME_PERIOD="2001-11-29" OBS_VALUE="3.33314" BBK_DIFF_A="0.21982"/>
      <bbk:Obs TIME_PERIOD="2001-11-28" OBS_VALUE="3.11332" BBK_DIFF_A="1.34729"/>
      <bbk:Obs TIME_PERIOD="2001-11-27" OBS_VALUE="1.76603" BBK_DIFF_A="-0.90036"/>
      <bbk:Obs TIME_PERIOD="2001-11-26" OBS_VALUE="2.66639" BBK_DIFF_A="0.50915"/>
      <bbk:Obs TIME_PERIOD="2001-11-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-11-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-11-23" OBS_VALUE="2.15724" BBK_DIFF_A="-0.88456"/>
      <bbk:Obs TIME_PERIOD="2001-11-22" OBS_VALUE="3.0418" BBK_DIFF_A="-0.13015"/>
      <bbk:Obs TIME_PERIOD="2001-11-21" OBS_VALUE="3.17195" BBK_DIFF_A="1.11866"/>
      <bbk:Obs TIME_PERIOD="2001-11-20" OBS_VALUE="2.05329" BBK_DIFF_A="-0.04857"/>
      <bbk:Obs TIME_PERIOD="2001-11-19" OBS_VALUE="2.10186" BBK_DIFF_A="1.41689"/>
      <bbk:Obs TIME_PERIOD="2001-11-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-11-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-11-16" OBS_VALUE="0.68497" BBK_DIFF_A="-0.97463"/>
      <bbk:Obs TIME_PERIOD="2001-11-15" OBS_VALUE="1.6596" BBK_DIFF_A="0.07451"/>
      <bbk:Obs TIME_PERIOD="2001-11-14" OBS_VALUE="1.58509" BBK_DIFF_A="-0.27591"/>
      <bbk:Obs TIME_PERIOD="2001-11-13" OBS_VALUE="1.861" BBK_DIFF_A="-0.01646"/>
      <bbk:Obs TIME_PERIOD="2001-11-12" OBS_VALUE="1.87746" BBK_DIFF_A="0.02859"/>
      <bbk:Obs TIME_PERIOD="2001-11-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-11-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-11-09" OBS_VALUE="1.84887" BBK_DIFF_A="0.91657"/>
      <bbk:Obs TIME_PERIOD="2001-11-08" OBS_VALUE="0.9323" BBK_DIFF_A="0.11413"/>
      <bbk:Obs TIME_PERIOD="2001-11-07" OBS_VALUE="0.81817" BBK_DIFF_A="-1.32651"/>
      <bbk:Obs TIME_PERIOD="2001-11-06" OBS_VALUE="2.14468" BBK_DIFF_A="1.1393"/>
      <bbk:Obs TIME_PERIOD="2001-11-05" OBS_VALUE="1.00538" BBK_DIFF_A="0.10538"/>
      <bbk:Obs TIME_PERIOD="2001-11-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-11-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-11-02" OBS_VALUE="0.9" BBK_DIFF_A="-0.01686"/>
      <bbk:Obs TIME_PERIOD="2001-11-01" OBS_VALUE="0.91686" BBK_DIFF_A="-0.07451"/>
      <bbk:Obs TIME_PERIOD="2001-10-31" OBS_VALUE="0.99137" BBK_DIFF_A="-0.0177"/>
      <bbk:Obs TIME_PERIOD="2001-10-30" OBS_VALUE="1.00907" BBK_DIFF_A="0.06918"/>
      <bbk:Obs TIME_PERIOD="2001-10-29" OBS_VALUE="0.93989" BBK_DIFF_A="0.08829"/>
      <bbk:Obs TIME_PERIOD="2001-10-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-10-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-10-26" OBS_VALUE="0.8516" BBK_DIFF_A="-0.0859"/>
      <bbk:Obs TIME_PERIOD="2001-10-25" OBS_VALUE="0.9375" BBK_DIFF_A="0.08766"/>
      <bbk:Obs TIME_PERIOD="2001-10-24" OBS_VALUE="0.84984" BBK_DIFF_A="-0.10648"/>
      <bbk:Obs TIME_PERIOD="2001-10-23" OBS_VALUE="0.95632" BBK_DIFF_A="0.08245"/>
      <bbk:Obs TIME_PERIOD="2001-10-22" OBS_VALUE="0.87387" BBK_DIFF_A="-0.0642"/>
      <bbk:Obs TIME_PERIOD="2001-10-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-10-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-10-19" OBS_VALUE="0.93807" BBK_DIFF_A="-0.03647"/>
      <bbk:Obs TIME_PERIOD="2001-10-18" OBS_VALUE="0.97454" BBK_DIFF_A="-0.02295"/>
      <bbk:Obs TIME_PERIOD="2001-10-17" OBS_VALUE="0.99749" BBK_DIFF_A="-0.03389"/>
      <bbk:Obs TIME_PERIOD="2001-10-16" OBS_VALUE="1.03138" BBK_DIFF_A="-0.17429"/>
      <bbk:Obs TIME_PERIOD="2001-10-15" OBS_VALUE="1.20567" BBK_DIFF_A="0.20611"/>
      <bbk:Obs TIME_PERIOD="2001-10-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-10-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-10-12" OBS_VALUE="0.99956" BBK_DIFF_A="0.00858"/>
      <bbk:Obs TIME_PERIOD="2001-10-11" OBS_VALUE="0.99098" BBK_DIFF_A="-0.1045"/>
      <bbk:Obs TIME_PERIOD="2001-10-10" OBS_VALUE="1.09548" BBK_DIFF_A="0.05156"/>
      <bbk:Obs TIME_PERIOD="2001-10-09" OBS_VALUE="1.04392" BBK_DIFF_A="0.04291"/>
      <bbk:Obs TIME_PERIOD="2001-10-08" OBS_VALUE="1.00101" BBK_DIFF_A="0.00882"/>
      <bbk:Obs TIME_PERIOD="2001-10-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-10-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-10-05" OBS_VALUE="0.99219" BBK_DIFF_A="-0.09353"/>
      <bbk:Obs TIME_PERIOD="2001-10-04" OBS_VALUE="1.08572" BBK_DIFF_A="0.09646"/>
      <bbk:Obs TIME_PERIOD="2001-10-03" OBS_VALUE="0.98926" BBK_DIFF_A="0.0821"/>
      <bbk:Obs TIME_PERIOD="2001-10-02" OBS_VALUE="0.90716" BBK_DIFF_A="-0.02932"/>
      <bbk:Obs TIME_PERIOD="2001-10-01" OBS_VALUE="0.93648" BBK_DIFF_A="-0.1613"/>
      <bbk:Obs TIME_PERIOD="2001-09-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-09-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-09-28" OBS_VALUE="1.09778" BBK_DIFF_A="1.0616"/>
      <bbk:Obs TIME_PERIOD="2001-09-27" OBS_VALUE="0.03618" BBK_DIFF_A="-1.90486"/>
      <bbk:Obs TIME_PERIOD="2001-09-26" OBS_VALUE="1.94104" BBK_DIFF_A="0.7923"/>
      <bbk:Obs TIME_PERIOD="2001-09-25" OBS_VALUE="1.14874" BBK_DIFF_A="0.11812"/>
      <bbk:Obs TIME_PERIOD="2001-09-24" OBS_VALUE="1.03062" BBK_DIFF_A="1.02458"/>
      <bbk:Obs TIME_PERIOD="2001-09-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-09-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-09-21" OBS_VALUE="0.00604" BBK_DIFF_A="-0.1888"/>
      <bbk:Obs TIME_PERIOD="2001-09-20" OBS_VALUE="0.19484" BBK_DIFF_A="-0.8019"/>
      <bbk:Obs TIME_PERIOD="2001-09-19" OBS_VALUE="0.99674" BBK_DIFF_A="0.99304"/>
      <bbk:Obs TIME_PERIOD="2001-09-18" OBS_VALUE="0.0037" BBK_DIFF_A="-0.97928"/>
      <bbk:Obs TIME_PERIOD="2001-09-17" OBS_VALUE="0.98298" BBK_DIFF_A="0.04896"/>
      <bbk:Obs TIME_PERIOD="2001-09-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-09-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-09-14" OBS_VALUE="0.93402" BBK_DIFF_A="-0.02763"/>
      <bbk:Obs TIME_PERIOD="2001-09-13" OBS_VALUE="0.96165" BBK_DIFF_A="-0.0466"/>
      <bbk:Obs TIME_PERIOD="2001-09-12" OBS_VALUE="1.00825" BBK_DIFF_A="-0.10581"/>
      <bbk:Obs TIME_PERIOD="2001-09-11" OBS_VALUE="1.11406" BBK_DIFF_A="0.24457"/>
      <bbk:Obs TIME_PERIOD="2001-09-10" OBS_VALUE="0.86949" BBK_DIFF_A="-0.12444"/>
      <bbk:Obs TIME_PERIOD="2001-09-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-09-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-09-07" OBS_VALUE="0.99393" BBK_DIFF_A="0.19653"/>
      <bbk:Obs TIME_PERIOD="2001-09-06" OBS_VALUE="0.7974" BBK_DIFF_A="0.11436"/>
      <bbk:Obs TIME_PERIOD="2001-09-05" OBS_VALUE="0.68304" BBK_DIFF_A="-0.16159"/>
      <bbk:Obs TIME_PERIOD="2001-09-04" OBS_VALUE="0.84463" BBK_DIFF_A="-0.21772"/>
      <bbk:Obs TIME_PERIOD="2001-09-03" OBS_VALUE="1.06235" BBK_DIFF_A="-0.19152"/>
      <bbk:Obs TIME_PERIOD="2001-09-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-09-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-08-31" OBS_VALUE="1.25387" BBK_DIFF_A="1.22351"/>
      <bbk:Obs TIME_PERIOD="2001-08-30" OBS_VALUE="0.03036" BBK_DIFF_A="-0.10751"/>
      <bbk:Obs TIME_PERIOD="2001-08-29" OBS_VALUE="0.13787" BBK_DIFF_A="0.01068"/>
      <bbk:Obs TIME_PERIOD="2001-08-28" OBS_VALUE="0.12719" BBK_DIFF_A="-8.3E-4"/>
      <bbk:Obs TIME_PERIOD="2001-08-27" OBS_VALUE="0.12802" BBK_DIFF_A="-0.00258"/>
      <bbk:Obs TIME_PERIOD="2001-08-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-08-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-08-24" OBS_VALUE="0.1306" BBK_DIFF_A="0.07371"/>
      <bbk:Obs TIME_PERIOD="2001-08-23" OBS_VALUE="0.05689" BBK_DIFF_A="-1.01374"/>
      <bbk:Obs TIME_PERIOD="2001-08-22" OBS_VALUE="1.07063" BBK_DIFF_A="0.96704"/>
      <bbk:Obs TIME_PERIOD="2001-08-21" OBS_VALUE="0.10359" BBK_DIFF_A="-0.64448"/>
      <bbk:Obs TIME_PERIOD="2001-08-20" OBS_VALUE="0.74807" BBK_DIFF_A="0.74797"/>
      <bbk:Obs TIME_PERIOD="2001-08-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-08-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-08-17" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.77039"/>
      <bbk:Obs TIME_PERIOD="2001-08-16" OBS_VALUE="0.77049" BBK_DIFF_A="0.13735"/>
      <bbk:Obs TIME_PERIOD="2001-08-15" OBS_VALUE="0.63314" BBK_DIFF_A="-0.21214"/>
      <bbk:Obs TIME_PERIOD="2001-08-14" OBS_VALUE="0.84528" BBK_DIFF_A="0.10879"/>
      <bbk:Obs TIME_PERIOD="2001-08-13" OBS_VALUE="0.73649" BBK_DIFF_A="0.08036"/>
      <bbk:Obs TIME_PERIOD="2001-08-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-08-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-08-10" OBS_VALUE="0.65613" BBK_DIFF_A="0.649"/>
      <bbk:Obs TIME_PERIOD="2001-08-09" OBS_VALUE="0.00713" BBK_DIFF_A="-1.40332"/>
      <bbk:Obs TIME_PERIOD="2001-08-08" OBS_VALUE="1.41045" BBK_DIFF_A="1.30231"/>
      <bbk:Obs TIME_PERIOD="2001-08-07" OBS_VALUE="0.10814" BBK_DIFF_A="-0.05206"/>
      <bbk:Obs TIME_PERIOD="2001-08-06" OBS_VALUE="0.1602" BBK_DIFF_A="-0.50953"/>
      <bbk:Obs TIME_PERIOD="2001-08-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-08-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-08-03" OBS_VALUE="0.66973" BBK_DIFF_A="-0.05859"/>
      <bbk:Obs TIME_PERIOD="2001-08-02" OBS_VALUE="0.72832" BBK_DIFF_A="0.72822"/>
      <bbk:Obs TIME_PERIOD="2001-08-01" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.08336"/>
      <bbk:Obs TIME_PERIOD="2001-07-31" OBS_VALUE="0.08346" BBK_DIFF_A="0.08336"/>
      <bbk:Obs TIME_PERIOD="2001-07-30" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2001-07-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-07-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-07-27" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.07898"/>
      <bbk:Obs TIME_PERIOD="2001-07-26" OBS_VALUE="0.07908" BBK_DIFF_A="0.07898"/>
      <bbk:Obs TIME_PERIOD="2001-07-25" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2001-07-24" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2001-07-23" OBS_VALUE="1.0E-4" BBK_DIFF_A="-1.09651"/>
      <bbk:Obs TIME_PERIOD="2001-07-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-07-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-07-20" OBS_VALUE="1.09661" BBK_DIFF_A="1.09651"/>
      <bbk:Obs TIME_PERIOD="2001-07-19" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.12185"/>
      <bbk:Obs TIME_PERIOD="2001-07-18" OBS_VALUE="0.12195" BBK_DIFF_A="-2.35421"/>
      <bbk:Obs TIME_PERIOD="2001-07-17" OBS_VALUE="2.47616" BBK_DIFF_A="1.57188"/>
      <bbk:Obs TIME_PERIOD="2001-07-16" OBS_VALUE="0.90428" BBK_DIFF_A="0.90418"/>
      <bbk:Obs TIME_PERIOD="2001-07-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-07-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-07-13" OBS_VALUE="1.0E-4" BBK_DIFF_A="-0.71664"/>
      <bbk:Obs TIME_PERIOD="2001-07-12" OBS_VALUE="0.71674" BBK_DIFF_A="-0.48268"/>
      <bbk:Obs TIME_PERIOD="2001-07-11" OBS_VALUE="1.19942" BBK_DIFF_A="0.27112"/>
      <bbk:Obs TIME_PERIOD="2001-07-10" OBS_VALUE="0.9283" BBK_DIFF_A="-1.17781"/>
      <bbk:Obs TIME_PERIOD="2001-07-09" OBS_VALUE="2.10611" BBK_DIFF_A="-1.45774"/>
      <bbk:Obs TIME_PERIOD="2001-07-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-07-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-07-06" OBS_VALUE="3.56385" BBK_DIFF_A="3.56375"/>
      <bbk:Obs TIME_PERIOD="2001-07-05" OBS_VALUE="1.0E-4" BBK_DIFF_A="-3.32214"/>
      <bbk:Obs TIME_PERIOD="2001-07-04" OBS_VALUE="3.32224" BBK_DIFF_A="2.0561"/>
      <bbk:Obs TIME_PERIOD="2001-07-03" OBS_VALUE="1.26614" BBK_DIFF_A="0.11752"/>
      <bbk:Obs TIME_PERIOD="2001-07-02" OBS_VALUE="1.14862" BBK_DIFF_A="-0.93697"/>
      <bbk:Obs TIME_PERIOD="2001-07-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-06-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-06-29" OBS_VALUE="2.08559" BBK_DIFF_A="2.08549"/>
      <bbk:Obs TIME_PERIOD="2001-06-28" OBS_VALUE="1.0E-4" BBK_DIFF_A="0.0"/>
      <bbk:Obs TIME_PERIOD="2001-06-27" OBS_VALUE="1.0E-4" BBK_DIFF_A="-1.13192"/>
      <bbk:Obs TIME_PERIOD="2001-06-26" OBS_VALUE="1.13202" BBK_DIFF_A="0.03608"/>
      <bbk:Obs TIME_PERIOD="2001-06-25" OBS_VALUE="1.09594" BBK_DIFF_A="-0.11127"/>
      <bbk:Obs TIME_PERIOD="2001-06-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-06-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-06-22" OBS_VALUE="1.20721" BBK_DIFF_A="0.03712"/>
      <bbk:Obs TIME_PERIOD="2001-06-21" OBS_VALUE="1.17009" BBK_DIFF_A="-0.04171"/>
      <bbk:Obs TIME_PERIOD="2001-06-20" OBS_VALUE="1.2118" BBK_DIFF_A="-0.08011"/>
      <bbk:Obs TIME_PERIOD="2001-06-19" OBS_VALUE="1.29191" BBK_DIFF_A="-0.29659"/>
      <bbk:Obs TIME_PERIOD="2001-06-18" OBS_VALUE="1.5885" BBK_DIFF_A="-3.34654"/>
      <bbk:Obs TIME_PERIOD="2001-06-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-06-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-06-15" OBS_VALUE="4.93504" BBK_DIFF_A="3.06697"/>
      <bbk:Obs TIME_PERIOD="2001-06-14" OBS_VALUE="1.86807" BBK_DIFF_A="1.40231"/>
      <bbk:Obs TIME_PERIOD="2001-06-13" OBS_VALUE="0.46576" BBK_DIFF_A="-0.5975"/>
      <bbk:Obs TIME_PERIOD="2001-06-12" OBS_VALUE="1.06326" BBK_DIFF_A="-0.15476"/>
      <bbk:Obs TIME_PERIOD="2001-06-11" OBS_VALUE="1.21802" BBK_DIFF_A="-1.22815"/>
      <bbk:Obs TIME_PERIOD="2001-06-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-06-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-06-08" OBS_VALUE="2.44617" BBK_DIFF_A="1.46662"/>
      <bbk:Obs TIME_PERIOD="2001-06-07" OBS_VALUE="0.97955" BBK_DIFF_A="-0.02165"/>
      <bbk:Obs TIME_PERIOD="2001-06-06" OBS_VALUE="1.0012" BBK_DIFF_A="-0.38214"/>
      <bbk:Obs TIME_PERIOD="2001-06-05" OBS_VALUE="1.38334" BBK_DIFF_A="0.14349"/>
      <bbk:Obs TIME_PERIOD="2001-06-04" OBS_VALUE="1.23985" BBK_DIFF_A="0.24653"/>
      <bbk:Obs TIME_PERIOD="2001-06-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-06-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-06-01" OBS_VALUE="0.99332" BBK_DIFF_A="-0.34136"/>
      <bbk:Obs TIME_PERIOD="2001-05-31" OBS_VALUE="1.33468" BBK_DIFF_A="0.29868"/>
      <bbk:Obs TIME_PERIOD="2001-05-30" OBS_VALUE="1.036" BBK_DIFF_A="-1.47606"/>
      <bbk:Obs TIME_PERIOD="2001-05-29" OBS_VALUE="2.51206" BBK_DIFF_A="1.07919"/>
      <bbk:Obs TIME_PERIOD="2001-05-28" OBS_VALUE="1.43287" BBK_DIFF_A="-0.08572"/>
      <bbk:Obs TIME_PERIOD="2001-05-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-05-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-05-25" OBS_VALUE="1.51859" BBK_DIFF_A="0.13457"/>
      <bbk:Obs TIME_PERIOD="2001-05-24" OBS_VALUE="1.38402" BBK_DIFF_A="0.17472"/>
      <bbk:Obs TIME_PERIOD="2001-05-23" OBS_VALUE="1.2093" BBK_DIFF_A="0.19348"/>
      <bbk:Obs TIME_PERIOD="2001-05-22" OBS_VALUE="1.01582" BBK_DIFF_A="0.02575"/>
      <bbk:Obs TIME_PERIOD="2001-05-21" OBS_VALUE="0.99007" BBK_DIFF_A="0.1205"/>
      <bbk:Obs TIME_PERIOD="2001-05-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-05-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-05-18" OBS_VALUE="0.86957" BBK_DIFF_A="-0.41082"/>
      <bbk:Obs TIME_PERIOD="2001-05-17" OBS_VALUE="1.28039" BBK_DIFF_A="-2.27829"/>
      <bbk:Obs TIME_PERIOD="2001-05-16" OBS_VALUE="3.55868" BBK_DIFF_A="2.3888"/>
      <bbk:Obs TIME_PERIOD="2001-05-15" OBS_VALUE="1.16988" BBK_DIFF_A="-0.02375"/>
      <bbk:Obs TIME_PERIOD="2001-05-14" OBS_VALUE="1.19363" BBK_DIFF_A="-0.12271"/>
      <bbk:Obs TIME_PERIOD="2001-05-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-05-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-05-11" OBS_VALUE="1.31634" BBK_DIFF_A="0.31193"/>
      <bbk:Obs TIME_PERIOD="2001-05-10" OBS_VALUE="1.00441" BBK_DIFF_A="-0.6224"/>
      <bbk:Obs TIME_PERIOD="2001-05-09" OBS_VALUE="1.62681" BBK_DIFF_A="0.09597"/>
      <bbk:Obs TIME_PERIOD="2001-05-08" OBS_VALUE="1.53084" BBK_DIFF_A="-0.30332"/>
      <bbk:Obs TIME_PERIOD="2001-05-07" OBS_VALUE="1.83416" BBK_DIFF_A="-1.89334"/>
      <bbk:Obs TIME_PERIOD="2001-05-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-05-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-05-04" OBS_VALUE="3.7275" BBK_DIFF_A="1.83232"/>
      <bbk:Obs TIME_PERIOD="2001-05-03" OBS_VALUE="1.89518" BBK_DIFF_A="0.86249"/>
      <bbk:Obs TIME_PERIOD="2001-05-02" OBS_VALUE="1.03269" BBK_DIFF_A="-4.35464"/>
      <bbk:Obs TIME_PERIOD="2001-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-04-30" OBS_VALUE="5.38733" BBK_DIFF_A="4.354"/>
      <bbk:Obs TIME_PERIOD="2001-04-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-04-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-04-27" OBS_VALUE="1.03333" BBK_DIFF_A="-0.42471"/>
      <bbk:Obs TIME_PERIOD="2001-04-26" OBS_VALUE="1.45804" BBK_DIFF_A="-2.1279"/>
      <bbk:Obs TIME_PERIOD="2001-04-25" OBS_VALUE="3.58594" BBK_DIFF_A="0.44247"/>
      <bbk:Obs TIME_PERIOD="2001-04-24" OBS_VALUE="3.14347" BBK_DIFF_A="1.67843"/>
      <bbk:Obs TIME_PERIOD="2001-04-23" OBS_VALUE="1.46504" BBK_DIFF_A="0.3169"/>
      <bbk:Obs TIME_PERIOD="2001-04-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-04-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-04-20" OBS_VALUE="1.14814" BBK_DIFF_A="0.30898"/>
      <bbk:Obs TIME_PERIOD="2001-04-19" OBS_VALUE="0.83916" BBK_DIFF_A="0.15294"/>
      <bbk:Obs TIME_PERIOD="2001-04-18" OBS_VALUE="0.68622" BBK_DIFF_A="-3.1126"/>
      <bbk:Obs TIME_PERIOD="2001-04-17" OBS_VALUE="3.79882" BBK_DIFF_A="-0.10517"/>
      <bbk:Obs TIME_PERIOD="2001-04-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-04-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-04-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-04-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-04-12" OBS_VALUE="3.90399" BBK_DIFF_A="3.13624"/>
      <bbk:Obs TIME_PERIOD="2001-04-11" OBS_VALUE="0.76775" BBK_DIFF_A="-0.00325"/>
      <bbk:Obs TIME_PERIOD="2001-04-10" OBS_VALUE="0.771" BBK_DIFF_A="0.00673"/>
      <bbk:Obs TIME_PERIOD="2001-04-09" OBS_VALUE="0.76427" BBK_DIFF_A="0.06891"/>
      <bbk:Obs TIME_PERIOD="2001-04-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-04-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-04-06" OBS_VALUE="0.69536" BBK_DIFF_A="-0.01481"/>
      <bbk:Obs TIME_PERIOD="2001-04-05" OBS_VALUE="0.71017" BBK_DIFF_A="0.02784"/>
      <bbk:Obs TIME_PERIOD="2001-04-04" OBS_VALUE="0.68233" BBK_DIFF_A="-0.10876"/>
      <bbk:Obs TIME_PERIOD="2001-04-03" OBS_VALUE="0.79109" BBK_DIFF_A="-0.05114"/>
      <bbk:Obs TIME_PERIOD="2001-04-02" OBS_VALUE="0.84223" BBK_DIFF_A="0.03377"/>
      <bbk:Obs TIME_PERIOD="2001-04-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-03-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-03-30" OBS_VALUE="0.80846" BBK_DIFF_A="0.02563"/>
      <bbk:Obs TIME_PERIOD="2001-03-29" OBS_VALUE="0.78283" BBK_DIFF_A="0.04845"/>
      <bbk:Obs TIME_PERIOD="2001-03-28" OBS_VALUE="0.73438" BBK_DIFF_A="0.00846"/>
      <bbk:Obs TIME_PERIOD="2001-03-27" OBS_VALUE="0.72592" BBK_DIFF_A="-0.03637"/>
      <bbk:Obs TIME_PERIOD="2001-03-26" OBS_VALUE="0.76229" BBK_DIFF_A="0.04681"/>
      <bbk:Obs TIME_PERIOD="2001-03-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-03-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-03-23" OBS_VALUE="0.71548" BBK_DIFF_A="-0.04938"/>
      <bbk:Obs TIME_PERIOD="2001-03-22" OBS_VALUE="0.76486" BBK_DIFF_A="0.04837"/>
      <bbk:Obs TIME_PERIOD="2001-03-21" OBS_VALUE="0.71649" BBK_DIFF_A="-0.03061"/>
      <bbk:Obs TIME_PERIOD="2001-03-20" OBS_VALUE="0.7471" BBK_DIFF_A="-0.02997"/>
      <bbk:Obs TIME_PERIOD="2001-03-19" OBS_VALUE="0.77707" BBK_DIFF_A="-0.07625"/>
      <bbk:Obs TIME_PERIOD="2001-03-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-03-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-03-16" OBS_VALUE="0.85332" BBK_DIFF_A="0.02795"/>
      <bbk:Obs TIME_PERIOD="2001-03-15" OBS_VALUE="0.82537" BBK_DIFF_A="-3.89177"/>
      <bbk:Obs TIME_PERIOD="2001-03-14" OBS_VALUE="4.71714" BBK_DIFF_A="-0.09875"/>
      <bbk:Obs TIME_PERIOD="2001-03-13" OBS_VALUE="4.81589" BBK_DIFF_A="0.08601"/>
      <bbk:Obs TIME_PERIOD="2001-03-12" OBS_VALUE="4.72988" BBK_DIFF_A="3.82034"/>
      <bbk:Obs TIME_PERIOD="2001-03-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-03-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-03-09" OBS_VALUE="0.90954" BBK_DIFF_A="0.01677"/>
      <bbk:Obs TIME_PERIOD="2001-03-08" OBS_VALUE="0.89277" BBK_DIFF_A="-0.09432"/>
      <bbk:Obs TIME_PERIOD="2001-03-07" OBS_VALUE="0.98709" BBK_DIFF_A="-4.07205"/>
      <bbk:Obs TIME_PERIOD="2001-03-06" OBS_VALUE="5.05914" BBK_DIFF_A="0.43215"/>
      <bbk:Obs TIME_PERIOD="2001-03-05" OBS_VALUE="4.62699" BBK_DIFF_A="3.80031"/>
      <bbk:Obs TIME_PERIOD="2001-03-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-03-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-03-02" OBS_VALUE="0.82668" BBK_DIFF_A="-0.0516"/>
      <bbk:Obs TIME_PERIOD="2001-03-01" OBS_VALUE="0.87828" BBK_DIFF_A="-0.08206"/>
      <bbk:Obs TIME_PERIOD="2001-02-28" OBS_VALUE="0.96034" BBK_DIFF_A="0.08906"/>
      <bbk:Obs TIME_PERIOD="2001-02-27" OBS_VALUE="0.87128" BBK_DIFF_A="-3.9197"/>
      <bbk:Obs TIME_PERIOD="2001-02-26" OBS_VALUE="4.79098" BBK_DIFF_A="3.5159"/>
      <bbk:Obs TIME_PERIOD="2001-02-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-02-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-02-23" OBS_VALUE="1.27508" BBK_DIFF_A="-3.55548"/>
      <bbk:Obs TIME_PERIOD="2001-02-22" OBS_VALUE="4.83056" BBK_DIFF_A="0.28833"/>
      <bbk:Obs TIME_PERIOD="2001-02-21" OBS_VALUE="4.54223" BBK_DIFF_A="-0.10689"/>
      <bbk:Obs TIME_PERIOD="2001-02-20" OBS_VALUE="4.64912" BBK_DIFF_A="-0.05179"/>
      <bbk:Obs TIME_PERIOD="2001-02-19" OBS_VALUE="4.70091" BBK_DIFF_A="0.51603"/>
      <bbk:Obs TIME_PERIOD="2001-02-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-02-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-02-16" OBS_VALUE="4.18488" BBK_DIFF_A="-0.1332"/>
      <bbk:Obs TIME_PERIOD="2001-02-15" OBS_VALUE="4.31808" BBK_DIFF_A="-0.72397"/>
      <bbk:Obs TIME_PERIOD="2001-02-14" OBS_VALUE="5.04205" BBK_DIFF_A="0.12148"/>
      <bbk:Obs TIME_PERIOD="2001-02-13" OBS_VALUE="4.92057" BBK_DIFF_A="0.39344"/>
      <bbk:Obs TIME_PERIOD="2001-02-12" OBS_VALUE="4.52713" BBK_DIFF_A="0.27324"/>
      <bbk:Obs TIME_PERIOD="2001-02-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-02-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-02-09" OBS_VALUE="4.25389" BBK_DIFF_A="0.01024"/>
      <bbk:Obs TIME_PERIOD="2001-02-08" OBS_VALUE="4.24365" BBK_DIFF_A="0.11936"/>
      <bbk:Obs TIME_PERIOD="2001-02-07" OBS_VALUE="4.12429" BBK_DIFF_A="-0.76853"/>
      <bbk:Obs TIME_PERIOD="2001-02-06" OBS_VALUE="4.89282" BBK_DIFF_A="0.69545"/>
      <bbk:Obs TIME_PERIOD="2001-02-05" OBS_VALUE="4.19737" BBK_DIFF_A="-0.71689"/>
      <bbk:Obs TIME_PERIOD="2001-02-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-02-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-02-02" OBS_VALUE="4.91426" BBK_DIFF_A="0.766"/>
      <bbk:Obs TIME_PERIOD="2001-02-01" OBS_VALUE="4.14826" BBK_DIFF_A="-0.25494"/>
      <bbk:Obs TIME_PERIOD="2001-01-31" OBS_VALUE="4.4032" BBK_DIFF_A="0.05246"/>
      <bbk:Obs TIME_PERIOD="2001-01-30" OBS_VALUE="4.35074" BBK_DIFF_A="0.87382"/>
      <bbk:Obs TIME_PERIOD="2001-01-29" OBS_VALUE="3.47692" BBK_DIFF_A="-0.40228"/>
      <bbk:Obs TIME_PERIOD="2001-01-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-01-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-01-26" OBS_VALUE="3.8792" BBK_DIFF_A="-0.25156"/>
      <bbk:Obs TIME_PERIOD="2001-01-25" OBS_VALUE="4.13076" BBK_DIFF_A="0.02059"/>
      <bbk:Obs TIME_PERIOD="2001-01-24" OBS_VALUE="4.11017" BBK_DIFF_A="-0.06065"/>
      <bbk:Obs TIME_PERIOD="2001-01-23" OBS_VALUE="4.17082" BBK_DIFF_A="-0.37896"/>
      <bbk:Obs TIME_PERIOD="2001-01-22" OBS_VALUE="4.54978" BBK_DIFF_A="3.69211"/>
      <bbk:Obs TIME_PERIOD="2001-01-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-01-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-01-19" OBS_VALUE="0.85767" BBK_DIFF_A="-3.0132"/>
      <bbk:Obs TIME_PERIOD="2001-01-18" OBS_VALUE="3.87087" BBK_DIFF_A="-1.0608"/>
      <bbk:Obs TIME_PERIOD="2001-01-17" OBS_VALUE="4.93167" BBK_DIFF_A="0.57095"/>
      <bbk:Obs TIME_PERIOD="2001-01-16" OBS_VALUE="4.36072" BBK_DIFF_A="-0.0708"/>
      <bbk:Obs TIME_PERIOD="2001-01-15" OBS_VALUE="4.43152" BBK_DIFF_A="-0.9902"/>
      <bbk:Obs TIME_PERIOD="2001-01-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-01-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-01-12" OBS_VALUE="5.42172" BBK_DIFF_A="1.29121"/>
      <bbk:Obs TIME_PERIOD="2001-01-11" OBS_VALUE="4.13051" BBK_DIFF_A="-0.47254"/>
      <bbk:Obs TIME_PERIOD="2001-01-10" OBS_VALUE="4.60305" BBK_DIFF_A="-0.24366"/>
      <bbk:Obs TIME_PERIOD="2001-01-09" OBS_VALUE="4.84671" BBK_DIFF_A="0.27759"/>
      <bbk:Obs TIME_PERIOD="2001-01-08" OBS_VALUE="4.56912" BBK_DIFF_A="-0.25258"/>
      <bbk:Obs TIME_PERIOD="2001-01-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-01-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2001-01-05" OBS_VALUE="4.8217" BBK_DIFF_A="3.93516"/>
      <bbk:Obs TIME_PERIOD="2001-01-04" OBS_VALUE="0.88654" BBK_DIFF_A="-0.22705"/>
      <bbk:Obs TIME_PERIOD="2001-01-03" OBS_VALUE="1.11359" BBK_DIFF_A="0.05776"/>
      <bbk:Obs TIME_PERIOD="2001-01-02" OBS_VALUE="1.05583" BBK_DIFF_A="-0.08033"/>
      <bbk:Obs TIME_PERIOD="2001-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-12-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-12-29" OBS_VALUE="1.13616" BBK_DIFF_A="-0.18011"/>
      <bbk:Obs TIME_PERIOD="2000-12-28" OBS_VALUE="1.31627" BBK_DIFF_A="0.23902"/>
      <bbk:Obs TIME_PERIOD="2000-12-27" OBS_VALUE="1.07725" BBK_DIFF_A="-4.66062"/>
      <bbk:Obs TIME_PERIOD="2000-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-12-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-12-22" OBS_VALUE="5.73787" BBK_DIFF_A="0.39502"/>
      <bbk:Obs TIME_PERIOD="2000-12-21" OBS_VALUE="5.34285" BBK_DIFF_A="3.94117"/>
      <bbk:Obs TIME_PERIOD="2000-12-20" OBS_VALUE="1.40168" BBK_DIFF_A="-0.22062"/>
      <bbk:Obs TIME_PERIOD="2000-12-19" OBS_VALUE="1.6223" BBK_DIFF_A="0.00272"/>
      <bbk:Obs TIME_PERIOD="2000-12-18" OBS_VALUE="1.61958" BBK_DIFF_A="0.34487"/>
      <bbk:Obs TIME_PERIOD="2000-12-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-12-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-12-15" OBS_VALUE="1.27471" BBK_DIFF_A="0.15568"/>
      <bbk:Obs TIME_PERIOD="2000-12-14" OBS_VALUE="1.11903" BBK_DIFF_A="-0.05948"/>
      <bbk:Obs TIME_PERIOD="2000-12-13" OBS_VALUE="1.17851" BBK_DIFF_A="-0.89168"/>
      <bbk:Obs TIME_PERIOD="2000-12-12" OBS_VALUE="2.07019" BBK_DIFF_A="-0.01703"/>
      <bbk:Obs TIME_PERIOD="2000-12-11" OBS_VALUE="2.08722" BBK_DIFF_A="0.53222"/>
      <bbk:Obs TIME_PERIOD="2000-12-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-12-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-12-08" OBS_VALUE="1.555" BBK_DIFF_A="0.23758"/>
      <bbk:Obs TIME_PERIOD="2000-12-07" OBS_VALUE="1.31742" BBK_DIFF_A="0.15936"/>
      <bbk:Obs TIME_PERIOD="2000-12-06" OBS_VALUE="1.15806" BBK_DIFF_A="0.08488"/>
      <bbk:Obs TIME_PERIOD="2000-12-05" OBS_VALUE="1.07318" BBK_DIFF_A="0.05001"/>
      <bbk:Obs TIME_PERIOD="2000-12-04" OBS_VALUE="1.02317" BBK_DIFF_A="-1.91273"/>
      <bbk:Obs TIME_PERIOD="2000-12-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-12-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-12-01" OBS_VALUE="2.9359" BBK_DIFF_A="0.27972"/>
      <bbk:Obs TIME_PERIOD="2000-11-30" OBS_VALUE="2.65618" BBK_DIFF_A="-2.39657"/>
      <bbk:Obs TIME_PERIOD="2000-11-29" OBS_VALUE="5.05275" BBK_DIFF_A="0.81502"/>
      <bbk:Obs TIME_PERIOD="2000-11-28" OBS_VALUE="4.23773" BBK_DIFF_A="-0.00318"/>
      <bbk:Obs TIME_PERIOD="2000-11-27" OBS_VALUE="4.24091" BBK_DIFF_A="-3.53494"/>
      <bbk:Obs TIME_PERIOD="2000-11-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-11-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-11-24" OBS_VALUE="7.77585" BBK_DIFF_A="2.04276"/>
      <bbk:Obs TIME_PERIOD="2000-11-23" OBS_VALUE="5.73309" BBK_DIFF_A="-4.6677"/>
      <bbk:Obs TIME_PERIOD="2000-11-22" OBS_VALUE="10.40079" BBK_DIFF_A="9.33292"/>
      <bbk:Obs TIME_PERIOD="2000-11-21" OBS_VALUE="1.06787" BBK_DIFF_A="-5.85027"/>
      <bbk:Obs TIME_PERIOD="2000-11-20" OBS_VALUE="6.91814" BBK_DIFF_A="4.59192"/>
      <bbk:Obs TIME_PERIOD="2000-11-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-11-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-11-17" OBS_VALUE="2.32622" BBK_DIFF_A="-2.72784"/>
      <bbk:Obs TIME_PERIOD="2000-11-16" OBS_VALUE="5.05406" BBK_DIFF_A="4.16859"/>
      <bbk:Obs TIME_PERIOD="2000-11-15" OBS_VALUE="0.88547" BBK_DIFF_A="0.05219"/>
      <bbk:Obs TIME_PERIOD="2000-11-14" OBS_VALUE="0.83328" BBK_DIFF_A="-1.16639"/>
      <bbk:Obs TIME_PERIOD="2000-11-13" OBS_VALUE="1.99967" BBK_DIFF_A="-3.47732"/>
      <bbk:Obs TIME_PERIOD="2000-11-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-11-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-11-10" OBS_VALUE="5.47699" BBK_DIFF_A="1.98179"/>
      <bbk:Obs TIME_PERIOD="2000-11-09" OBS_VALUE="3.4952" BBK_DIFF_A="-4.79392"/>
      <bbk:Obs TIME_PERIOD="2000-11-08" OBS_VALUE="8.28912" BBK_DIFF_A="2.0833"/>
      <bbk:Obs TIME_PERIOD="2000-11-07" OBS_VALUE="6.20582" BBK_DIFF_A="0.6102"/>
      <bbk:Obs TIME_PERIOD="2000-11-06" OBS_VALUE="5.59562" BBK_DIFF_A="0.17268"/>
      <bbk:Obs TIME_PERIOD="2000-11-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-11-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-11-03" OBS_VALUE="5.42294" BBK_DIFF_A="3.92862"/>
      <bbk:Obs TIME_PERIOD="2000-11-02" OBS_VALUE="1.49432" BBK_DIFF_A="-3.69524"/>
      <bbk:Obs TIME_PERIOD="2000-11-01" OBS_VALUE="5.18956" BBK_DIFF_A="4.76819"/>
      <bbk:Obs TIME_PERIOD="2000-10-31" OBS_VALUE="0.42137" BBK_DIFF_A="0.40684"/>
      <bbk:Obs TIME_PERIOD="2000-10-30" OBS_VALUE="0.01453" BBK_DIFF_A="-4.26913"/>
      <bbk:Obs TIME_PERIOD="2000-10-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-10-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-10-27" OBS_VALUE="4.28366" BBK_DIFF_A="3.80257"/>
      <bbk:Obs TIME_PERIOD="2000-10-26" OBS_VALUE="0.48109" BBK_DIFF_A="0.00572"/>
      <bbk:Obs TIME_PERIOD="2000-10-25" OBS_VALUE="0.47537" BBK_DIFF_A="0.47118"/>
      <bbk:Obs TIME_PERIOD="2000-10-24" OBS_VALUE="0.00419" BBK_DIFF_A="0.00409"/>
      <bbk:Obs TIME_PERIOD="2000-10-23" OBS_VALUE="1.0E-4" BBK_DIFF_A="-5.75169"/>
      <bbk:Obs TIME_PERIOD="2000-10-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-10-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-10-20" OBS_VALUE="5.75179" BBK_DIFF_A="5.32825"/>
      <bbk:Obs TIME_PERIOD="2000-10-19" OBS_VALUE="0.42354" BBK_DIFF_A="-6.5707"/>
      <bbk:Obs TIME_PERIOD="2000-10-18" OBS_VALUE="6.99424" BBK_DIFF_A="1.47648"/>
      <bbk:Obs TIME_PERIOD="2000-10-17" OBS_VALUE="5.51776" BBK_DIFF_A="-0.08835"/>
      <bbk:Obs TIME_PERIOD="2000-10-16" OBS_VALUE="5.60611" BBK_DIFF_A="5.55312"/>
      <bbk:Obs TIME_PERIOD="2000-10-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-10-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-10-13" OBS_VALUE="0.05299" BBK_DIFF_A="-9.91302"/>
      <bbk:Obs TIME_PERIOD="2000-10-12" OBS_VALUE="9.96601" BBK_DIFF_A="2.34995"/>
      <bbk:Obs TIME_PERIOD="2000-10-11" OBS_VALUE="7.61606" BBK_DIFF_A="1.0241"/>
      <bbk:Obs TIME_PERIOD="2000-10-10" OBS_VALUE="6.59196" BBK_DIFF_A="1.28853"/>
      <bbk:Obs TIME_PERIOD="2000-10-09" OBS_VALUE="5.30343" BBK_DIFF_A="-2.11704"/>
      <bbk:Obs TIME_PERIOD="2000-10-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-10-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-10-06" OBS_VALUE="7.42047" BBK_DIFF_A="0.14883"/>
      <bbk:Obs TIME_PERIOD="2000-10-05" OBS_VALUE="7.27164" BBK_DIFF_A="-22.47004"/>
      <bbk:Obs TIME_PERIOD="2000-10-04" OBS_VALUE="29.74168" BBK_DIFF_A="20.32903"/>
      <bbk:Obs TIME_PERIOD="2000-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-10-02" OBS_VALUE="9.41265" BBK_DIFF_A="2.69535"/>
      <bbk:Obs TIME_PERIOD="2000-10-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-09-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-09-29" OBS_VALUE="6.7173" BBK_DIFF_A="-1.18882"/>
      <bbk:Obs TIME_PERIOD="2000-09-28" OBS_VALUE="7.90612" BBK_DIFF_A="2.71085"/>
      <bbk:Obs TIME_PERIOD="2000-09-27" OBS_VALUE="5.19527" BBK_DIFF_A="0.67449"/>
      <bbk:Obs TIME_PERIOD="2000-09-26" OBS_VALUE="4.52078" BBK_DIFF_A="-0.73119"/>
      <bbk:Obs TIME_PERIOD="2000-09-25" OBS_VALUE="5.25197" BBK_DIFF_A="-1.46009"/>
      <bbk:Obs TIME_PERIOD="2000-09-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-09-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-09-22" OBS_VALUE="6.71206" BBK_DIFF_A="-1.18347"/>
      <bbk:Obs TIME_PERIOD="2000-09-21" OBS_VALUE="7.89553" BBK_DIFF_A="-0.38056"/>
      <bbk:Obs TIME_PERIOD="2000-09-20" OBS_VALUE="8.27609" BBK_DIFF_A="0.11454"/>
      <bbk:Obs TIME_PERIOD="2000-09-19" OBS_VALUE="8.16155" BBK_DIFF_A="1.12089"/>
      <bbk:Obs TIME_PERIOD="2000-09-18" OBS_VALUE="7.04066" BBK_DIFF_A="-0.76573"/>
      <bbk:Obs TIME_PERIOD="2000-09-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-09-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-09-15" OBS_VALUE="7.80639" BBK_DIFF_A="2.58898"/>
      <bbk:Obs TIME_PERIOD="2000-09-14" OBS_VALUE="5.21741" BBK_DIFF_A="-0.25926"/>
      <bbk:Obs TIME_PERIOD="2000-09-13" OBS_VALUE="5.47667" BBK_DIFF_A="-1.25597"/>
      <bbk:Obs TIME_PERIOD="2000-09-12" OBS_VALUE="6.73264" BBK_DIFF_A="0.43222"/>
      <bbk:Obs TIME_PERIOD="2000-09-11" OBS_VALUE="6.30042" BBK_DIFF_A="0.22386"/>
      <bbk:Obs TIME_PERIOD="2000-09-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-09-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-09-08" OBS_VALUE="6.07656" BBK_DIFF_A="-1.53727"/>
      <bbk:Obs TIME_PERIOD="2000-09-07" OBS_VALUE="7.61383" BBK_DIFF_A="0.32364"/>
      <bbk:Obs TIME_PERIOD="2000-09-06" OBS_VALUE="7.29019" BBK_DIFF_A="0.48679"/>
      <bbk:Obs TIME_PERIOD="2000-09-05" OBS_VALUE="6.8034" BBK_DIFF_A="-0.45633"/>
      <bbk:Obs TIME_PERIOD="2000-09-04" OBS_VALUE="7.25973" BBK_DIFF_A="0.29035"/>
      <bbk:Obs TIME_PERIOD="2000-09-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-09-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-09-01" OBS_VALUE="6.96938" BBK_DIFF_A="1.30039"/>
      <bbk:Obs TIME_PERIOD="2000-08-31" OBS_VALUE="5.66899" BBK_DIFF_A="1.35517"/>
      <bbk:Obs TIME_PERIOD="2000-08-30" OBS_VALUE="4.31382" BBK_DIFF_A="-0.28622"/>
      <bbk:Obs TIME_PERIOD="2000-08-29" OBS_VALUE="4.60004" BBK_DIFF_A="-0.63642"/>
      <bbk:Obs TIME_PERIOD="2000-08-28" OBS_VALUE="5.23646" BBK_DIFF_A="-0.05525"/>
      <bbk:Obs TIME_PERIOD="2000-08-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-08-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-08-25" OBS_VALUE="5.29171" BBK_DIFF_A="2.33603"/>
      <bbk:Obs TIME_PERIOD="2000-08-24" OBS_VALUE="2.95568" BBK_DIFF_A="-1.35789"/>
      <bbk:Obs TIME_PERIOD="2000-08-23" OBS_VALUE="4.31357" BBK_DIFF_A="-0.67365"/>
      <bbk:Obs TIME_PERIOD="2000-08-22" OBS_VALUE="4.98722" BBK_DIFF_A="0.66624"/>
      <bbk:Obs TIME_PERIOD="2000-08-21" OBS_VALUE="4.32098" BBK_DIFF_A="-0.05713"/>
      <bbk:Obs TIME_PERIOD="2000-08-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-08-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-08-18" OBS_VALUE="4.37811" BBK_DIFF_A="-0.45445"/>
      <bbk:Obs TIME_PERIOD="2000-08-17" OBS_VALUE="4.83256" BBK_DIFF_A="-0.43444"/>
      <bbk:Obs TIME_PERIOD="2000-08-16" OBS_VALUE="5.267" BBK_DIFF_A="1.13359"/>
      <bbk:Obs TIME_PERIOD="2000-08-15" OBS_VALUE="4.13341" BBK_DIFF_A="1.31537"/>
      <bbk:Obs TIME_PERIOD="2000-08-14" OBS_VALUE="2.81804" BBK_DIFF_A="-0.22915"/>
      <bbk:Obs TIME_PERIOD="2000-08-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-08-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-08-11" OBS_VALUE="3.04719" BBK_DIFF_A="0.22852"/>
      <bbk:Obs TIME_PERIOD="2000-08-10" OBS_VALUE="2.81867" BBK_DIFF_A="-0.66869"/>
      <bbk:Obs TIME_PERIOD="2000-08-09" OBS_VALUE="3.48736" BBK_DIFF_A="0.93515"/>
      <bbk:Obs TIME_PERIOD="2000-08-08" OBS_VALUE="2.55221" BBK_DIFF_A="0.02371"/>
      <bbk:Obs TIME_PERIOD="2000-08-07" OBS_VALUE="2.5285" BBK_DIFF_A="-0.38381"/>
      <bbk:Obs TIME_PERIOD="2000-08-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-08-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-08-04" OBS_VALUE="2.91231" BBK_DIFF_A="-0.00887"/>
      <bbk:Obs TIME_PERIOD="2000-08-03" OBS_VALUE="2.92118" BBK_DIFF_A="0.01507"/>
      <bbk:Obs TIME_PERIOD="2000-08-02" OBS_VALUE="2.90611" BBK_DIFF_A="0.08717"/>
      <bbk:Obs TIME_PERIOD="2000-08-01" OBS_VALUE="2.81894" BBK_DIFF_A="-0.14151"/>
      <bbk:Obs TIME_PERIOD="2000-07-31" OBS_VALUE="2.96045" BBK_DIFF_A="-0.38552"/>
      <bbk:Obs TIME_PERIOD="2000-07-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-07-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-07-28" OBS_VALUE="3.34597" BBK_DIFF_A="-0.59641"/>
      <bbk:Obs TIME_PERIOD="2000-07-27" OBS_VALUE="3.94238" BBK_DIFF_A="0.50404"/>
      <bbk:Obs TIME_PERIOD="2000-07-26" OBS_VALUE="3.43834" BBK_DIFF_A="-0.06247"/>
      <bbk:Obs TIME_PERIOD="2000-07-25" OBS_VALUE="3.50081" BBK_DIFF_A="0.13948"/>
      <bbk:Obs TIME_PERIOD="2000-07-24" OBS_VALUE="3.36133" BBK_DIFF_A="0.05049"/>
      <bbk:Obs TIME_PERIOD="2000-07-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-07-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-07-21" OBS_VALUE="3.31084" BBK_DIFF_A="-0.03753"/>
      <bbk:Obs TIME_PERIOD="2000-07-20" OBS_VALUE="3.34837" BBK_DIFF_A="0.00115"/>
      <bbk:Obs TIME_PERIOD="2000-07-19" OBS_VALUE="3.34722" BBK_DIFF_A="0.30992"/>
      <bbk:Obs TIME_PERIOD="2000-07-18" OBS_VALUE="3.0373" BBK_DIFF_A="0.40459"/>
      <bbk:Obs TIME_PERIOD="2000-07-17" OBS_VALUE="2.63271" BBK_DIFF_A="-0.4683"/>
      <bbk:Obs TIME_PERIOD="2000-07-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-07-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-07-14" OBS_VALUE="3.10101" BBK_DIFF_A="0.39236"/>
      <bbk:Obs TIME_PERIOD="2000-07-13" OBS_VALUE="2.70865" BBK_DIFF_A="-0.04606"/>
      <bbk:Obs TIME_PERIOD="2000-07-12" OBS_VALUE="2.75471" BBK_DIFF_A="0.22586"/>
      <bbk:Obs TIME_PERIOD="2000-07-11" OBS_VALUE="2.52885" BBK_DIFF_A="-0.0641"/>
      <bbk:Obs TIME_PERIOD="2000-07-10" OBS_VALUE="2.59295" BBK_DIFF_A="0.61944"/>
      <bbk:Obs TIME_PERIOD="2000-07-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-07-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-07-07" OBS_VALUE="1.97351" BBK_DIFF_A="1.88472"/>
      <bbk:Obs TIME_PERIOD="2000-07-06" OBS_VALUE="0.08879" BBK_DIFF_A="-1.88873"/>
      <bbk:Obs TIME_PERIOD="2000-07-05" OBS_VALUE="1.97752" BBK_DIFF_A="1.26017"/>
      <bbk:Obs TIME_PERIOD="2000-07-04" OBS_VALUE="0.71735" BBK_DIFF_A="-1.24556"/>
      <bbk:Obs TIME_PERIOD="2000-07-03" OBS_VALUE="1.96291" BBK_DIFF_A="-0.29208"/>
      <bbk:Obs TIME_PERIOD="2000-07-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-07-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-06-30" OBS_VALUE="2.25499" BBK_DIFF_A="0.38948"/>
      <bbk:Obs TIME_PERIOD="2000-06-29" OBS_VALUE="1.86551" BBK_DIFF_A="-0.4265"/>
      <bbk:Obs TIME_PERIOD="2000-06-28" OBS_VALUE="2.29201" BBK_DIFF_A="0.29852"/>
      <bbk:Obs TIME_PERIOD="2000-06-27" OBS_VALUE="1.99349" BBK_DIFF_A="-0.19496"/>
      <bbk:Obs TIME_PERIOD="2000-06-26" OBS_VALUE="2.18845" BBK_DIFF_A="0.02247"/>
      <bbk:Obs TIME_PERIOD="2000-06-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-06-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-06-23" OBS_VALUE="2.16598" BBK_DIFF_A="0.09432"/>
      <bbk:Obs TIME_PERIOD="2000-06-22" OBS_VALUE="2.07166" BBK_DIFF_A="-0.77197"/>
      <bbk:Obs TIME_PERIOD="2000-06-21" OBS_VALUE="2.84363" BBK_DIFF_A="2.13934"/>
      <bbk:Obs TIME_PERIOD="2000-06-20" OBS_VALUE="0.70429" BBK_DIFF_A="-0.04713"/>
      <bbk:Obs TIME_PERIOD="2000-06-19" OBS_VALUE="0.75142" BBK_DIFF_A="0.06388"/>
      <bbk:Obs TIME_PERIOD="2000-06-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-06-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-06-16" OBS_VALUE="0.68754" BBK_DIFF_A="-0.24589"/>
      <bbk:Obs TIME_PERIOD="2000-06-15" OBS_VALUE="0.93343" BBK_DIFF_A="0.82111"/>
      <bbk:Obs TIME_PERIOD="2000-06-14" OBS_VALUE="0.11232" BBK_DIFF_A="-2.45266"/>
      <bbk:Obs TIME_PERIOD="2000-06-13" OBS_VALUE="2.56498" BBK_DIFF_A="-0.13342"/>
      <bbk:Obs TIME_PERIOD="2000-06-12" OBS_VALUE="2.6984" BBK_DIFF_A="0.10669"/>
      <bbk:Obs TIME_PERIOD="2000-06-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-06-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-06-09" OBS_VALUE="2.59171" BBK_DIFF_A="0.42799"/>
      <bbk:Obs TIME_PERIOD="2000-06-08" OBS_VALUE="2.16372" BBK_DIFF_A="1.56724"/>
      <bbk:Obs TIME_PERIOD="2000-06-07" OBS_VALUE="0.59648" BBK_DIFF_A="-1.45049"/>
      <bbk:Obs TIME_PERIOD="2000-06-06" OBS_VALUE="2.04697" BBK_DIFF_A="0.04501"/>
      <bbk:Obs TIME_PERIOD="2000-06-05" OBS_VALUE="2.00196" BBK_DIFF_A="0.01554"/>
      <bbk:Obs TIME_PERIOD="2000-06-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-06-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-06-02" OBS_VALUE="1.98642" BBK_DIFF_A="-0.12802"/>
      <bbk:Obs TIME_PERIOD="2000-06-01" OBS_VALUE="2.11444" BBK_DIFF_A="0.05551"/>
      <bbk:Obs TIME_PERIOD="2000-05-31" OBS_VALUE="2.05893" BBK_DIFF_A="-0.14857"/>
      <bbk:Obs TIME_PERIOD="2000-05-30" OBS_VALUE="2.2075" BBK_DIFF_A="0.31563"/>
      <bbk:Obs TIME_PERIOD="2000-05-29" OBS_VALUE="1.89187" BBK_DIFF_A="0.35037"/>
      <bbk:Obs TIME_PERIOD="2000-05-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-05-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-05-26" OBS_VALUE="1.5415" BBK_DIFF_A="0.44293"/>
      <bbk:Obs TIME_PERIOD="2000-05-25" OBS_VALUE="1.09857" BBK_DIFF_A="0.60954"/>
      <bbk:Obs TIME_PERIOD="2000-05-24" OBS_VALUE="0.48903" BBK_DIFF_A="-0.51824"/>
      <bbk:Obs TIME_PERIOD="2000-05-23" OBS_VALUE="1.00727" BBK_DIFF_A="0.92678"/>
      <bbk:Obs TIME_PERIOD="2000-05-22" OBS_VALUE="0.08049" BBK_DIFF_A="-0.7291"/>
      <bbk:Obs TIME_PERIOD="2000-05-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-05-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-05-19" OBS_VALUE="0.80959" BBK_DIFF_A="-0.30142"/>
      <bbk:Obs TIME_PERIOD="2000-05-18" OBS_VALUE="1.11101" BBK_DIFF_A="0.16537"/>
      <bbk:Obs TIME_PERIOD="2000-05-17" OBS_VALUE="0.94564" BBK_DIFF_A="-0.48497"/>
      <bbk:Obs TIME_PERIOD="2000-05-16" OBS_VALUE="1.43061" BBK_DIFF_A="-0.76088"/>
      <bbk:Obs TIME_PERIOD="2000-05-15" OBS_VALUE="2.19149" BBK_DIFF_A="-1.13953"/>
      <bbk:Obs TIME_PERIOD="2000-05-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-05-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-05-12" OBS_VALUE="3.33102" BBK_DIFF_A="-0.75426"/>
      <bbk:Obs TIME_PERIOD="2000-05-11" OBS_VALUE="4.08528" BBK_DIFF_A="0.6839"/>
      <bbk:Obs TIME_PERIOD="2000-05-10" OBS_VALUE="3.40138" BBK_DIFF_A="1.87924"/>
      <bbk:Obs TIME_PERIOD="2000-05-09" OBS_VALUE="1.52214" BBK_DIFF_A="-0.12398"/>
      <bbk:Obs TIME_PERIOD="2000-05-08" OBS_VALUE="1.64612" BBK_DIFF_A="-1.91594"/>
      <bbk:Obs TIME_PERIOD="2000-05-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-05-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-05-05" OBS_VALUE="3.56206" BBK_DIFF_A="1.82634"/>
      <bbk:Obs TIME_PERIOD="2000-05-04" OBS_VALUE="1.73572" BBK_DIFF_A="0.05746"/>
      <bbk:Obs TIME_PERIOD="2000-05-03" OBS_VALUE="1.67826" BBK_DIFF_A="0.28155"/>
      <bbk:Obs TIME_PERIOD="2000-05-02" OBS_VALUE="1.39671" BBK_DIFF_A="0.72545"/>
      <bbk:Obs TIME_PERIOD="2000-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-04-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-04-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-04-28" OBS_VALUE="0.67126" BBK_DIFF_A="-5.87088"/>
      <bbk:Obs TIME_PERIOD="2000-04-27" OBS_VALUE="6.54214" BBK_DIFF_A="-0.95211"/>
      <bbk:Obs TIME_PERIOD="2000-04-26" OBS_VALUE="7.49425" BBK_DIFF_A="0.4453"/>
      <bbk:Obs TIME_PERIOD="2000-04-25" OBS_VALUE="7.04895" BBK_DIFF_A="-1.42113"/>
      <bbk:Obs TIME_PERIOD="2000-04-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-04-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-04-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-04-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-04-20" OBS_VALUE="8.47008" BBK_DIFF_A="2.33054"/>
      <bbk:Obs TIME_PERIOD="2000-04-19" OBS_VALUE="6.13954" BBK_DIFF_A="-3.66678"/>
      <bbk:Obs TIME_PERIOD="2000-04-18" OBS_VALUE="9.80632" BBK_DIFF_A="1.13864"/>
      <bbk:Obs TIME_PERIOD="2000-04-17" OBS_VALUE="8.66768" BBK_DIFF_A="1.09478"/>
      <bbk:Obs TIME_PERIOD="2000-04-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-04-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-04-14" OBS_VALUE="7.5729" BBK_DIFF_A="-0.31663"/>
      <bbk:Obs TIME_PERIOD="2000-04-13" OBS_VALUE="7.88953" BBK_DIFF_A="-0.23818"/>
      <bbk:Obs TIME_PERIOD="2000-04-12" OBS_VALUE="8.12771" BBK_DIFF_A="-0.0284"/>
      <bbk:Obs TIME_PERIOD="2000-04-11" OBS_VALUE="8.15611" BBK_DIFF_A="-0.41786"/>
      <bbk:Obs TIME_PERIOD="2000-04-10" OBS_VALUE="8.57397" BBK_DIFF_A="2.81859"/>
      <bbk:Obs TIME_PERIOD="2000-04-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-04-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-04-07" OBS_VALUE="5.75538" BBK_DIFF_A="-1.23713"/>
      <bbk:Obs TIME_PERIOD="2000-04-06" OBS_VALUE="6.99251" BBK_DIFF_A="-4.53826"/>
      <bbk:Obs TIME_PERIOD="2000-04-05" OBS_VALUE="11.53077" BBK_DIFF_A="2.90483"/>
      <bbk:Obs TIME_PERIOD="2000-04-04" OBS_VALUE="8.62594" BBK_DIFF_A="0.95134"/>
      <bbk:Obs TIME_PERIOD="2000-04-03" OBS_VALUE="7.6746" BBK_DIFF_A="-0.63608"/>
      <bbk:Obs TIME_PERIOD="2000-04-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-04-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-03-31" OBS_VALUE="8.31068" BBK_DIFF_A="-1.08014"/>
      <bbk:Obs TIME_PERIOD="2000-03-30" OBS_VALUE="9.39082" BBK_DIFF_A="0.59129"/>
      <bbk:Obs TIME_PERIOD="2000-03-29" OBS_VALUE="8.79953" BBK_DIFF_A="-0.69255"/>
      <bbk:Obs TIME_PERIOD="2000-03-28" OBS_VALUE="9.49208" BBK_DIFF_A="-0.41026"/>
      <bbk:Obs TIME_PERIOD="2000-03-27" OBS_VALUE="9.90234" BBK_DIFF_A="0.84092"/>
      <bbk:Obs TIME_PERIOD="2000-03-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-03-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-03-24" OBS_VALUE="9.06142" BBK_DIFF_A="-0.80404"/>
      <bbk:Obs TIME_PERIOD="2000-03-23" OBS_VALUE="9.86546" BBK_DIFF_A="0.14548"/>
      <bbk:Obs TIME_PERIOD="2000-03-22" OBS_VALUE="9.71998" BBK_DIFF_A="1.30886"/>
      <bbk:Obs TIME_PERIOD="2000-03-21" OBS_VALUE="8.41112" BBK_DIFF_A="0.42875"/>
      <bbk:Obs TIME_PERIOD="2000-03-20" OBS_VALUE="7.98237" BBK_DIFF_A="-1.37068"/>
      <bbk:Obs TIME_PERIOD="2000-03-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-03-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-03-17" OBS_VALUE="9.35305" BBK_DIFF_A="0.78739"/>
      <bbk:Obs TIME_PERIOD="2000-03-16" OBS_VALUE="8.56566" BBK_DIFF_A="1.04252"/>
      <bbk:Obs TIME_PERIOD="2000-03-15" OBS_VALUE="7.52314" BBK_DIFF_A="0.55916"/>
      <bbk:Obs TIME_PERIOD="2000-03-14" OBS_VALUE="6.96398" BBK_DIFF_A="2.94835"/>
      <bbk:Obs TIME_PERIOD="2000-03-13" OBS_VALUE="4.01563" BBK_DIFF_A="-2.26749"/>
      <bbk:Obs TIME_PERIOD="2000-03-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-03-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-03-10" OBS_VALUE="6.28312" BBK_DIFF_A="3.72068"/>
      <bbk:Obs TIME_PERIOD="2000-03-09" OBS_VALUE="2.56244" BBK_DIFF_A="-3.09383"/>
      <bbk:Obs TIME_PERIOD="2000-03-08" OBS_VALUE="5.65627" BBK_DIFF_A="-1.23915"/>
      <bbk:Obs TIME_PERIOD="2000-03-07" OBS_VALUE="6.89542" BBK_DIFF_A="-0.25847"/>
      <bbk:Obs TIME_PERIOD="2000-03-06" OBS_VALUE="7.15389" BBK_DIFF_A="-1.63115"/>
      <bbk:Obs TIME_PERIOD="2000-03-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-03-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-03-03" OBS_VALUE="8.78504" BBK_DIFF_A="-0.52291"/>
      <bbk:Obs TIME_PERIOD="2000-03-02" OBS_VALUE="9.30795" BBK_DIFF_A="-0.60914"/>
      <bbk:Obs TIME_PERIOD="2000-03-01" OBS_VALUE="9.91709" BBK_DIFF_A="0.84214"/>
      <bbk:Obs TIME_PERIOD="2000-02-29" OBS_VALUE="9.07495" BBK_DIFF_A="-0.82992"/>
      <bbk:Obs TIME_PERIOD="2000-02-28" OBS_VALUE="9.90487" BBK_DIFF_A="0.32705"/>
      <bbk:Obs TIME_PERIOD="2000-02-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-02-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-02-25" OBS_VALUE="9.57782" BBK_DIFF_A="0.44571"/>
      <bbk:Obs TIME_PERIOD="2000-02-24" OBS_VALUE="9.13211" BBK_DIFF_A="-0.47496"/>
      <bbk:Obs TIME_PERIOD="2000-02-23" OBS_VALUE="9.60707" BBK_DIFF_A="1.05394"/>
      <bbk:Obs TIME_PERIOD="2000-02-22" OBS_VALUE="8.55313" BBK_DIFF_A="7.23895"/>
      <bbk:Obs TIME_PERIOD="2000-02-21" OBS_VALUE="1.31418" BBK_DIFF_A="0.19157"/>
      <bbk:Obs TIME_PERIOD="2000-02-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-02-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-02-18" OBS_VALUE="1.12261" BBK_DIFF_A="-4.80056"/>
      <bbk:Obs TIME_PERIOD="2000-02-17" OBS_VALUE="5.92317" BBK_DIFF_A="-5.36952"/>
      <bbk:Obs TIME_PERIOD="2000-02-16" OBS_VALUE="11.29269" BBK_DIFF_A="-0.16584"/>
      <bbk:Obs TIME_PERIOD="2000-02-15" OBS_VALUE="11.45853" BBK_DIFF_A="0.13122"/>
      <bbk:Obs TIME_PERIOD="2000-02-14" OBS_VALUE="11.32731" BBK_DIFF_A="5.3544"/>
      <bbk:Obs TIME_PERIOD="2000-02-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-02-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-02-11" OBS_VALUE="5.97291" BBK_DIFF_A="-4.99841"/>
      <bbk:Obs TIME_PERIOD="2000-02-10" OBS_VALUE="10.97132" BBK_DIFF_A="-0.13205"/>
      <bbk:Obs TIME_PERIOD="2000-02-09" OBS_VALUE="11.10337" BBK_DIFF_A="0.2952"/>
      <bbk:Obs TIME_PERIOD="2000-02-08" OBS_VALUE="10.80817" BBK_DIFF_A="0.73229"/>
      <bbk:Obs TIME_PERIOD="2000-02-07" OBS_VALUE="10.07588" BBK_DIFF_A="1.22402"/>
      <bbk:Obs TIME_PERIOD="2000-02-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-02-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-02-04" OBS_VALUE="8.85186" BBK_DIFF_A="0.98046"/>
      <bbk:Obs TIME_PERIOD="2000-02-03" OBS_VALUE="7.8714" BBK_DIFF_A="0.15959"/>
      <bbk:Obs TIME_PERIOD="2000-02-02" OBS_VALUE="7.71181" BBK_DIFF_A="-1.8452"/>
      <bbk:Obs TIME_PERIOD="2000-02-01" OBS_VALUE="9.55701" BBK_DIFF_A="0.06232"/>
      <bbk:Obs TIME_PERIOD="2000-01-31" OBS_VALUE="9.49469" BBK_DIFF_A="0.66485"/>
      <bbk:Obs TIME_PERIOD="2000-01-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-01-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-01-28" OBS_VALUE="8.82984" BBK_DIFF_A="-0.78422"/>
      <bbk:Obs TIME_PERIOD="2000-01-27" OBS_VALUE="9.61406" BBK_DIFF_A="0.33951"/>
      <bbk:Obs TIME_PERIOD="2000-01-26" OBS_VALUE="9.27455" BBK_DIFF_A="0.09099"/>
      <bbk:Obs TIME_PERIOD="2000-01-25" OBS_VALUE="9.18356" BBK_DIFF_A="-0.2978"/>
      <bbk:Obs TIME_PERIOD="2000-01-24" OBS_VALUE="9.48136" BBK_DIFF_A="-0.41815"/>
      <bbk:Obs TIME_PERIOD="2000-01-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-01-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-01-21" OBS_VALUE="9.89951" BBK_DIFF_A="5.15009"/>
      <bbk:Obs TIME_PERIOD="2000-01-20" OBS_VALUE="4.74942" BBK_DIFF_A="-2.68651"/>
      <bbk:Obs TIME_PERIOD="2000-01-19" OBS_VALUE="7.43593" BBK_DIFF_A="0.17559"/>
      <bbk:Obs TIME_PERIOD="2000-01-18" OBS_VALUE="7.26034" BBK_DIFF_A="-0.1287"/>
      <bbk:Obs TIME_PERIOD="2000-01-17" OBS_VALUE="7.38904" BBK_DIFF_A="-0.16557"/>
      <bbk:Obs TIME_PERIOD="2000-01-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-01-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-01-14" OBS_VALUE="7.55461" BBK_DIFF_A="1.08257"/>
      <bbk:Obs TIME_PERIOD="2000-01-13" OBS_VALUE="6.47204" BBK_DIFF_A="0.79157"/>
      <bbk:Obs TIME_PERIOD="2000-01-12" OBS_VALUE="5.68047" BBK_DIFF_A="2.08599"/>
      <bbk:Obs TIME_PERIOD="2000-01-11" OBS_VALUE="3.59448" BBK_DIFF_A="0.71104"/>
      <bbk:Obs TIME_PERIOD="2000-01-10" OBS_VALUE="2.88344" BBK_DIFF_A="-2.21944"/>
      <bbk:Obs TIME_PERIOD="2000-01-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-01-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-01-07" OBS_VALUE="5.10288" BBK_DIFF_A="-1.0282"/>
      <bbk:Obs TIME_PERIOD="2000-01-06" OBS_VALUE="6.13108" BBK_DIFF_A="0.11938"/>
      <bbk:Obs TIME_PERIOD="2000-01-05" OBS_VALUE="6.0117" BBK_DIFF_A="-1.13938"/>
      <bbk:Obs TIME_PERIOD="2000-01-04" OBS_VALUE="7.15108" BBK_DIFF_A="-0.30244"/>
      <bbk:Obs TIME_PERIOD="2000-01-03" OBS_VALUE="7.45352" BBK_DIFF_A="1.48567"/>
      <bbk:Obs TIME_PERIOD="2000-01-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="2000-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-12-30" OBS_VALUE="5.96785" BBK_DIFF_A="1.18804"/>
      <bbk:Obs TIME_PERIOD="1999-12-29" OBS_VALUE="4.77981" BBK_DIFF_A="-1.34944"/>
      <bbk:Obs TIME_PERIOD="1999-12-28" OBS_VALUE="6.12925" BBK_DIFF_A="1.00833"/>
      <bbk:Obs TIME_PERIOD="1999-12-27" OBS_VALUE="5.12092" BBK_DIFF_A="-0.64004"/>
      <bbk:Obs TIME_PERIOD="1999-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-12-23" OBS_VALUE="5.76096" BBK_DIFF_A="-0.09781"/>
      <bbk:Obs TIME_PERIOD="1999-12-22" OBS_VALUE="5.85877" BBK_DIFF_A="-1.09313"/>
      <bbk:Obs TIME_PERIOD="1999-12-21" OBS_VALUE="6.9519" BBK_DIFF_A="-0.68583"/>
      <bbk:Obs TIME_PERIOD="1999-12-20" OBS_VALUE="7.63773" BBK_DIFF_A="0.852"/>
      <bbk:Obs TIME_PERIOD="1999-12-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-12-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-12-17" OBS_VALUE="6.78573" BBK_DIFF_A="1.09868"/>
      <bbk:Obs TIME_PERIOD="1999-12-16" OBS_VALUE="5.68705" BBK_DIFF_A="-1.57166"/>
      <bbk:Obs TIME_PERIOD="1999-12-15" OBS_VALUE="7.25871" BBK_DIFF_A="0.14446"/>
      <bbk:Obs TIME_PERIOD="1999-12-14" OBS_VALUE="7.11425" BBK_DIFF_A="1.14226"/>
      <bbk:Obs TIME_PERIOD="1999-12-13" OBS_VALUE="5.97199" BBK_DIFF_A="-3.64616"/>
      <bbk:Obs TIME_PERIOD="1999-12-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-12-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-12-10" OBS_VALUE="9.61815" BBK_DIFF_A="3.53587"/>
      <bbk:Obs TIME_PERIOD="1999-12-09" OBS_VALUE="6.08228" BBK_DIFF_A="-3.02305"/>
      <bbk:Obs TIME_PERIOD="1999-12-08" OBS_VALUE="9.10533" BBK_DIFF_A="2.51535"/>
      <bbk:Obs TIME_PERIOD="1999-12-07" OBS_VALUE="6.58998" BBK_DIFF_A="-2.47025"/>
      <bbk:Obs TIME_PERIOD="1999-12-06" OBS_VALUE="9.06023" BBK_DIFF_A="0.19005"/>
      <bbk:Obs TIME_PERIOD="1999-12-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-12-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-12-03" OBS_VALUE="8.87018" BBK_DIFF_A="0.05893"/>
      <bbk:Obs TIME_PERIOD="1999-12-02" OBS_VALUE="8.81125" BBK_DIFF_A="-0.26798"/>
      <bbk:Obs TIME_PERIOD="1999-12-01" OBS_VALUE="9.07923" BBK_DIFF_A="0.11506"/>
      <bbk:Obs TIME_PERIOD="1999-11-30" OBS_VALUE="8.96417" BBK_DIFF_A="0.32572"/>
      <bbk:Obs TIME_PERIOD="1999-11-29" OBS_VALUE="8.63845" BBK_DIFF_A="2.2033"/>
      <bbk:Obs TIME_PERIOD="1999-11-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-11-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-11-26" OBS_VALUE="6.43515" BBK_DIFF_A="-2.29489"/>
      <bbk:Obs TIME_PERIOD="1999-11-25" OBS_VALUE="8.73004" BBK_DIFF_A="2.20452"/>
      <bbk:Obs TIME_PERIOD="1999-11-24" OBS_VALUE="6.52552" BBK_DIFF_A="-2.60931"/>
      <bbk:Obs TIME_PERIOD="1999-11-23" OBS_VALUE="9.13483" BBK_DIFF_A="0.05828"/>
      <bbk:Obs TIME_PERIOD="1999-11-22" OBS_VALUE="9.07655" BBK_DIFF_A="0.29979"/>
      <bbk:Obs TIME_PERIOD="1999-11-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-11-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-11-19" OBS_VALUE="8.77676" BBK_DIFF_A="-0.05055"/>
      <bbk:Obs TIME_PERIOD="1999-11-18" OBS_VALUE="8.82731" BBK_DIFF_A="-0.0625"/>
      <bbk:Obs TIME_PERIOD="1999-11-17" OBS_VALUE="8.88981" BBK_DIFF_A="1.94157"/>
      <bbk:Obs TIME_PERIOD="1999-11-16" OBS_VALUE="6.94824" BBK_DIFF_A="-0.02088"/>
      <bbk:Obs TIME_PERIOD="1999-11-15" OBS_VALUE="6.96912" BBK_DIFF_A="0.39941"/>
      <bbk:Obs TIME_PERIOD="1999-11-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-11-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-11-12" OBS_VALUE="6.56971" BBK_DIFF_A="6.42332"/>
      <bbk:Obs TIME_PERIOD="1999-11-11" OBS_VALUE="0.14639" BBK_DIFF_A="-9.58365"/>
      <bbk:Obs TIME_PERIOD="1999-11-10" OBS_VALUE="9.73004" BBK_DIFF_A="2.53632"/>
      <bbk:Obs TIME_PERIOD="1999-11-09" OBS_VALUE="7.19372" BBK_DIFF_A="-2.9663"/>
      <bbk:Obs TIME_PERIOD="1999-11-08" OBS_VALUE="10.16002" BBK_DIFF_A="0.79601"/>
      <bbk:Obs TIME_PERIOD="1999-11-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-11-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-11-05" OBS_VALUE="9.36401" BBK_DIFF_A="0.03736"/>
      <bbk:Obs TIME_PERIOD="1999-11-04" OBS_VALUE="9.32665" BBK_DIFF_A="3.76903"/>
      <bbk:Obs TIME_PERIOD="1999-11-03" OBS_VALUE="5.55762" BBK_DIFF_A="0.27946"/>
      <bbk:Obs TIME_PERIOD="1999-11-02" OBS_VALUE="5.27816" BBK_DIFF_A="-3.40899"/>
      <bbk:Obs TIME_PERIOD="1999-11-01" OBS_VALUE="8.68715" BBK_DIFF_A="-0.64326"/>
      <bbk:Obs TIME_PERIOD="1999-10-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-10-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-10-29" OBS_VALUE="9.33041" BBK_DIFF_A="0.78772"/>
      <bbk:Obs TIME_PERIOD="1999-10-28" OBS_VALUE="8.54269" BBK_DIFF_A="-0.74322"/>
      <bbk:Obs TIME_PERIOD="1999-10-27" OBS_VALUE="9.28591" BBK_DIFF_A="0.56328"/>
      <bbk:Obs TIME_PERIOD="1999-10-26" OBS_VALUE="8.72263" BBK_DIFF_A="3.69455"/>
      <bbk:Obs TIME_PERIOD="1999-10-25" OBS_VALUE="5.02808" BBK_DIFF_A="-3.31817"/>
      <bbk:Obs TIME_PERIOD="1999-10-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-10-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-10-22" OBS_VALUE="8.34625" BBK_DIFF_A="0.83269"/>
      <bbk:Obs TIME_PERIOD="1999-10-21" OBS_VALUE="7.51356" BBK_DIFF_A="-0.07241"/>
      <bbk:Obs TIME_PERIOD="1999-10-20" OBS_VALUE="7.58597" BBK_DIFF_A="3.41455"/>
      <bbk:Obs TIME_PERIOD="1999-10-19" OBS_VALUE="4.17142" BBK_DIFF_A="-1.49638"/>
      <bbk:Obs TIME_PERIOD="1999-10-18" OBS_VALUE="5.6678" BBK_DIFF_A="-0.82999"/>
      <bbk:Obs TIME_PERIOD="1999-10-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-10-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-10-15" OBS_VALUE="6.49779" BBK_DIFF_A="0.25821"/>
      <bbk:Obs TIME_PERIOD="1999-10-14" OBS_VALUE="6.23958" BBK_DIFF_A="0.71662"/>
      <bbk:Obs TIME_PERIOD="1999-10-13" OBS_VALUE="5.52296" BBK_DIFF_A="-0.81676"/>
      <bbk:Obs TIME_PERIOD="1999-10-12" OBS_VALUE="6.33972" BBK_DIFF_A="0.24715"/>
      <bbk:Obs TIME_PERIOD="1999-10-11" OBS_VALUE="6.09257" BBK_DIFF_A="0.55206"/>
      <bbk:Obs TIME_PERIOD="1999-10-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-10-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-10-08" OBS_VALUE="5.54051" BBK_DIFF_A="-0.25658"/>
      <bbk:Obs TIME_PERIOD="1999-10-07" OBS_VALUE="5.79709" BBK_DIFF_A="0.66337"/>
      <bbk:Obs TIME_PERIOD="1999-10-06" OBS_VALUE="5.13372" BBK_DIFF_A="0.10716"/>
      <bbk:Obs TIME_PERIOD="1999-10-05" OBS_VALUE="5.02656" BBK_DIFF_A="-1.09489"/>
      <bbk:Obs TIME_PERIOD="1999-10-04" OBS_VALUE="6.12145" BBK_DIFF_A="0.6289"/>
      <bbk:Obs TIME_PERIOD="1999-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-10-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-10-01" OBS_VALUE="5.49255" BBK_DIFF_A="-2.11716"/>
      <bbk:Obs TIME_PERIOD="1999-09-30" OBS_VALUE="7.60971" BBK_DIFF_A="-1.54266"/>
      <bbk:Obs TIME_PERIOD="1999-09-29" OBS_VALUE="9.15237" BBK_DIFF_A="3.78071"/>
      <bbk:Obs TIME_PERIOD="1999-09-28" OBS_VALUE="5.37166" BBK_DIFF_A="-4.42893"/>
      <bbk:Obs TIME_PERIOD="1999-09-27" OBS_VALUE="9.80059" BBK_DIFF_A="4.42359"/>
      <bbk:Obs TIME_PERIOD="1999-09-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-09-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-09-24" OBS_VALUE="5.377" BBK_DIFF_A="-3.08239"/>
      <bbk:Obs TIME_PERIOD="1999-09-23" OBS_VALUE="8.45939" BBK_DIFF_A="2.81055"/>
      <bbk:Obs TIME_PERIOD="1999-09-22" OBS_VALUE="5.64884" BBK_DIFF_A="-0.1533"/>
      <bbk:Obs TIME_PERIOD="1999-09-21" OBS_VALUE="5.80214" BBK_DIFF_A="-0.51045"/>
      <bbk:Obs TIME_PERIOD="1999-09-20" OBS_VALUE="6.31259" BBK_DIFF_A="0.21365"/>
      <bbk:Obs TIME_PERIOD="1999-09-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-09-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-09-17" OBS_VALUE="6.09894" BBK_DIFF_A="0.52588"/>
      <bbk:Obs TIME_PERIOD="1999-09-16" OBS_VALUE="5.57306" BBK_DIFF_A="-1.83564"/>
      <bbk:Obs TIME_PERIOD="1999-09-15" OBS_VALUE="7.4087" BBK_DIFF_A="0.31385"/>
      <bbk:Obs TIME_PERIOD="1999-09-14" OBS_VALUE="7.09485" BBK_DIFF_A="2.52951"/>
      <bbk:Obs TIME_PERIOD="1999-09-13" OBS_VALUE="4.56534" BBK_DIFF_A="-0.22266"/>
      <bbk:Obs TIME_PERIOD="1999-09-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-09-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-09-10" OBS_VALUE="4.788" BBK_DIFF_A="-2.52348"/>
      <bbk:Obs TIME_PERIOD="1999-09-09" OBS_VALUE="7.31148" BBK_DIFF_A="1.31938"/>
      <bbk:Obs TIME_PERIOD="1999-09-08" OBS_VALUE="5.9921" BBK_DIFF_A="-0.37784"/>
      <bbk:Obs TIME_PERIOD="1999-09-07" OBS_VALUE="6.36994" BBK_DIFF_A="1.91883"/>
      <bbk:Obs TIME_PERIOD="1999-09-06" OBS_VALUE="4.45111" BBK_DIFF_A="-1.61503"/>
      <bbk:Obs TIME_PERIOD="1999-09-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-09-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-09-03" OBS_VALUE="6.06614" BBK_DIFF_A="-1.0466"/>
      <bbk:Obs TIME_PERIOD="1999-09-02" OBS_VALUE="7.11274" BBK_DIFF_A="2.04432"/>
      <bbk:Obs TIME_PERIOD="1999-09-01" OBS_VALUE="5.06842" BBK_DIFF_A="0.3132"/>
      <bbk:Obs TIME_PERIOD="1999-08-31" OBS_VALUE="4.75522" BBK_DIFF_A="0.57531"/>
      <bbk:Obs TIME_PERIOD="1999-08-30" OBS_VALUE="4.17991" BBK_DIFF_A="-0.8398"/>
      <bbk:Obs TIME_PERIOD="1999-08-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-08-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-08-27" OBS_VALUE="5.01971" BBK_DIFF_A="0.94213"/>
      <bbk:Obs TIME_PERIOD="1999-08-26" OBS_VALUE="4.07758" BBK_DIFF_A="-1.02218"/>
      <bbk:Obs TIME_PERIOD="1999-08-25" OBS_VALUE="5.09976" BBK_DIFF_A="-0.57041"/>
      <bbk:Obs TIME_PERIOD="1999-08-24" OBS_VALUE="5.67017" BBK_DIFF_A="0.24612"/>
      <bbk:Obs TIME_PERIOD="1999-08-23" OBS_VALUE="5.42405" BBK_DIFF_A="0.06603"/>
      <bbk:Obs TIME_PERIOD="1999-08-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-08-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-08-20" OBS_VALUE="5.35802" BBK_DIFF_A="-0.27536"/>
      <bbk:Obs TIME_PERIOD="1999-08-19" OBS_VALUE="5.63338" BBK_DIFF_A="1.5529"/>
      <bbk:Obs TIME_PERIOD="1999-08-18" OBS_VALUE="4.08048" BBK_DIFF_A="-1.3671"/>
      <bbk:Obs TIME_PERIOD="1999-08-17" OBS_VALUE="5.44758" BBK_DIFF_A="-0.12165"/>
      <bbk:Obs TIME_PERIOD="1999-08-16" OBS_VALUE="5.56923" BBK_DIFF_A="-0.28498"/>
      <bbk:Obs TIME_PERIOD="1999-08-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-08-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-08-13" OBS_VALUE="5.85421" BBK_DIFF_A="0.18889"/>
      <bbk:Obs TIME_PERIOD="1999-08-12" OBS_VALUE="5.66532" BBK_DIFF_A="0.1177"/>
      <bbk:Obs TIME_PERIOD="1999-08-11" OBS_VALUE="5.54762" BBK_DIFF_A="-0.97013"/>
      <bbk:Obs TIME_PERIOD="1999-08-10" OBS_VALUE="6.51775" BBK_DIFF_A="-0.14568"/>
      <bbk:Obs TIME_PERIOD="1999-08-09" OBS_VALUE="6.66343" BBK_DIFF_A="0.38669"/>
      <bbk:Obs TIME_PERIOD="1999-08-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-08-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-08-06" OBS_VALUE="6.27674" BBK_DIFF_A="0.205"/>
      <bbk:Obs TIME_PERIOD="1999-08-05" OBS_VALUE="6.07174" BBK_DIFF_A="1.18343"/>
      <bbk:Obs TIME_PERIOD="1999-08-04" OBS_VALUE="4.88831" BBK_DIFF_A="0.14715"/>
      <bbk:Obs TIME_PERIOD="1999-08-03" OBS_VALUE="4.74116" BBK_DIFF_A="-0.01827"/>
      <bbk:Obs TIME_PERIOD="1999-08-02" OBS_VALUE="4.75943" BBK_DIFF_A="-0.31354"/>
      <bbk:Obs TIME_PERIOD="1999-08-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-07-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-07-30" OBS_VALUE="5.07297" BBK_DIFF_A="-0.97193"/>
      <bbk:Obs TIME_PERIOD="1999-07-29" OBS_VALUE="6.0449" BBK_DIFF_A="2.1307"/>
      <bbk:Obs TIME_PERIOD="1999-07-28" OBS_VALUE="3.9142" BBK_DIFF_A="3.70391"/>
      <bbk:Obs TIME_PERIOD="1999-07-27" OBS_VALUE="0.21029" BBK_DIFF_A="-0.00704"/>
      <bbk:Obs TIME_PERIOD="1999-07-26" OBS_VALUE="0.21733" BBK_DIFF_A="-5.20814"/>
      <bbk:Obs TIME_PERIOD="1999-07-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-07-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-07-23" OBS_VALUE="5.42547" BBK_DIFF_A="5.11957"/>
      <bbk:Obs TIME_PERIOD="1999-07-22" OBS_VALUE="0.3059" BBK_DIFF_A="-5.78536"/>
      <bbk:Obs TIME_PERIOD="1999-07-21" OBS_VALUE="6.09126" BBK_DIFF_A="-0.25628"/>
      <bbk:Obs TIME_PERIOD="1999-07-20" OBS_VALUE="6.34754" BBK_DIFF_A="0.80918"/>
      <bbk:Obs TIME_PERIOD="1999-07-19" OBS_VALUE="5.53836" BBK_DIFF_A="-0.53494"/>
      <bbk:Obs TIME_PERIOD="1999-07-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-07-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-07-16" OBS_VALUE="6.0733" BBK_DIFF_A="0.52421"/>
      <bbk:Obs TIME_PERIOD="1999-07-15" OBS_VALUE="5.54909" BBK_DIFF_A="-2.12677"/>
      <bbk:Obs TIME_PERIOD="1999-07-14" OBS_VALUE="7.67586" BBK_DIFF_A="2.24351"/>
      <bbk:Obs TIME_PERIOD="1999-07-13" OBS_VALUE="5.43235" BBK_DIFF_A="-0.4383"/>
      <bbk:Obs TIME_PERIOD="1999-07-12" OBS_VALUE="5.87065" BBK_DIFF_A="-1.1295"/>
      <bbk:Obs TIME_PERIOD="1999-07-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-07-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-07-09" OBS_VALUE="7.00015" BBK_DIFF_A="-0.80401"/>
      <bbk:Obs TIME_PERIOD="1999-07-08" OBS_VALUE="7.80416" BBK_DIFF_A="7.80389"/>
      <bbk:Obs TIME_PERIOD="1999-07-07" OBS_VALUE="2.7E-4" BBK_DIFF_A="-8.12005"/>
      <bbk:Obs TIME_PERIOD="1999-07-06" OBS_VALUE="8.12032" BBK_DIFF_A="-1.27691"/>
      <bbk:Obs TIME_PERIOD="1999-07-05" OBS_VALUE="9.39723" BBK_DIFF_A="0.22923"/>
      <bbk:Obs TIME_PERIOD="1999-07-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-07-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-07-02" OBS_VALUE="9.168" BBK_DIFF_A="9.14479"/>
      <bbk:Obs TIME_PERIOD="1999-07-01" OBS_VALUE="0.02321" BBK_DIFF_A="-7.32635"/>
      <bbk:Obs TIME_PERIOD="1999-06-30" OBS_VALUE="7.34956" BBK_DIFF_A="1.23025"/>
      <bbk:Obs TIME_PERIOD="1999-06-29" OBS_VALUE="6.11931" BBK_DIFF_A="0.03266"/>
      <bbk:Obs TIME_PERIOD="1999-06-28" OBS_VALUE="6.08665" BBK_DIFF_A="0.30169"/>
      <bbk:Obs TIME_PERIOD="1999-06-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-06-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-06-25" OBS_VALUE="5.78496" BBK_DIFF_A="5.57501"/>
      <bbk:Obs TIME_PERIOD="1999-06-24" OBS_VALUE="0.20995" BBK_DIFF_A="-7.38097"/>
      <bbk:Obs TIME_PERIOD="1999-06-23" OBS_VALUE="7.59092" BBK_DIFF_A="4.248"/>
      <bbk:Obs TIME_PERIOD="1999-06-22" OBS_VALUE="3.34292" BBK_DIFF_A="0.17319"/>
      <bbk:Obs TIME_PERIOD="1999-06-21" OBS_VALUE="3.16973" BBK_DIFF_A="-3.49146"/>
      <bbk:Obs TIME_PERIOD="1999-06-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-06-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-06-18" OBS_VALUE="6.66119" BBK_DIFF_A="0.98393"/>
      <bbk:Obs TIME_PERIOD="1999-06-17" OBS_VALUE="5.67726" BBK_DIFF_A="3.32317"/>
      <bbk:Obs TIME_PERIOD="1999-06-16" OBS_VALUE="2.35409" BBK_DIFF_A="-1.25894"/>
      <bbk:Obs TIME_PERIOD="1999-06-15" OBS_VALUE="3.61303" BBK_DIFF_A="0.6803"/>
      <bbk:Obs TIME_PERIOD="1999-06-14" OBS_VALUE="2.93273" BBK_DIFF_A="1.62816"/>
      <bbk:Obs TIME_PERIOD="1999-06-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-06-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-06-11" OBS_VALUE="1.30457" BBK_DIFF_A="-1.51815"/>
      <bbk:Obs TIME_PERIOD="1999-06-10" OBS_VALUE="2.82272" BBK_DIFF_A="0.72269"/>
      <bbk:Obs TIME_PERIOD="1999-06-09" OBS_VALUE="2.10003" BBK_DIFF_A="-0.32198"/>
      <bbk:Obs TIME_PERIOD="1999-06-08" OBS_VALUE="2.42201" BBK_DIFF_A="-2.73905"/>
      <bbk:Obs TIME_PERIOD="1999-06-07" OBS_VALUE="5.16106" BBK_DIFF_A="3.47902"/>
      <bbk:Obs TIME_PERIOD="1999-06-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-06-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-06-04" OBS_VALUE="1.68204" BBK_DIFF_A="-2.96822"/>
      <bbk:Obs TIME_PERIOD="1999-06-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-06-02" OBS_VALUE="4.65026" BBK_DIFF_A="2.88119"/>
      <bbk:Obs TIME_PERIOD="1999-06-01" OBS_VALUE="1.76907" BBK_DIFF_A="-0.26546"/>
      <bbk:Obs TIME_PERIOD="1999-05-31" OBS_VALUE="2.03453" BBK_DIFF_A="-0.44433"/>
      <bbk:Obs TIME_PERIOD="1999-05-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-05-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-05-28" OBS_VALUE="2.47886" BBK_DIFF_A="-5.12498"/>
      <bbk:Obs TIME_PERIOD="1999-05-27" OBS_VALUE="7.60384" BBK_DIFF_A="2.86232"/>
      <bbk:Obs TIME_PERIOD="1999-05-26" OBS_VALUE="4.74152" BBK_DIFF_A="1.94728"/>
      <bbk:Obs TIME_PERIOD="1999-05-25" OBS_VALUE="2.79424" BBK_DIFF_A="1.27511"/>
      <bbk:Obs TIME_PERIOD="1999-05-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-05-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-05-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-05-21" OBS_VALUE="1.51913" BBK_DIFF_A="0.13358"/>
      <bbk:Obs TIME_PERIOD="1999-05-20" OBS_VALUE="1.38555" BBK_DIFF_A="0.44227"/>
      <bbk:Obs TIME_PERIOD="1999-05-19" OBS_VALUE="0.94328" BBK_DIFF_A="0.81722"/>
      <bbk:Obs TIME_PERIOD="1999-05-18" OBS_VALUE="0.12606" BBK_DIFF_A="-1.38458"/>
      <bbk:Obs TIME_PERIOD="1999-05-17" OBS_VALUE="1.51064" BBK_DIFF_A="-0.41486"/>
      <bbk:Obs TIME_PERIOD="1999-05-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-05-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-05-14" OBS_VALUE="1.9255" BBK_DIFF_A="-0.76489"/>
      <bbk:Obs TIME_PERIOD="1999-05-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-05-12" OBS_VALUE="2.69039" BBK_DIFF_A="2.67871"/>
      <bbk:Obs TIME_PERIOD="1999-05-11" OBS_VALUE="0.01168" BBK_DIFF_A="-13.84981"/>
      <bbk:Obs TIME_PERIOD="1999-05-10" OBS_VALUE="13.86149" BBK_DIFF_A="9.30015"/>
      <bbk:Obs TIME_PERIOD="1999-05-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-05-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-05-07" OBS_VALUE="4.56134" BBK_DIFF_A="1.90949"/>
      <bbk:Obs TIME_PERIOD="1999-05-06" OBS_VALUE="2.65185" BBK_DIFF_A="0.09165"/>
      <bbk:Obs TIME_PERIOD="1999-05-05" OBS_VALUE="2.5602" BBK_DIFF_A="-0.69893"/>
      <bbk:Obs TIME_PERIOD="1999-05-04" OBS_VALUE="3.25913" BBK_DIFF_A="0.44485"/>
      <bbk:Obs TIME_PERIOD="1999-05-03" OBS_VALUE="2.81428" BBK_DIFF_A="-0.53462"/>
      <bbk:Obs TIME_PERIOD="1999-05-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-04-30" OBS_VALUE="3.3489" BBK_DIFF_A="0.26631"/>
      <bbk:Obs TIME_PERIOD="1999-04-29" OBS_VALUE="3.08259" BBK_DIFF_A="1.14007"/>
      <bbk:Obs TIME_PERIOD="1999-04-28" OBS_VALUE="1.94252" BBK_DIFF_A="-0.08324"/>
      <bbk:Obs TIME_PERIOD="1999-04-27" OBS_VALUE="2.02576" BBK_DIFF_A="0.22269"/>
      <bbk:Obs TIME_PERIOD="1999-04-26" OBS_VALUE="1.80307" BBK_DIFF_A="0.21218"/>
      <bbk:Obs TIME_PERIOD="1999-04-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-04-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-04-23" OBS_VALUE="1.59089" BBK_DIFF_A="0.12959"/>
      <bbk:Obs TIME_PERIOD="1999-04-22" OBS_VALUE="1.4613" BBK_DIFF_A="0.06555"/>
      <bbk:Obs TIME_PERIOD="1999-04-21" OBS_VALUE="1.39575" BBK_DIFF_A="-4.37693"/>
      <bbk:Obs TIME_PERIOD="1999-04-20" OBS_VALUE="5.77268" BBK_DIFF_A="4.18112"/>
      <bbk:Obs TIME_PERIOD="1999-04-19" OBS_VALUE="1.59156" BBK_DIFF_A="0.25239"/>
      <bbk:Obs TIME_PERIOD="1999-04-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-04-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-04-16" OBS_VALUE="1.33917" BBK_DIFF_A="1.27231"/>
      <bbk:Obs TIME_PERIOD="1999-04-15" OBS_VALUE="0.06686" BBK_DIFF_A="0.03485"/>
      <bbk:Obs TIME_PERIOD="1999-04-14" OBS_VALUE="0.03201" BBK_DIFF_A="-0.17117"/>
      <bbk:Obs TIME_PERIOD="1999-04-13" OBS_VALUE="0.20318" BBK_DIFF_A="-7.93059"/>
      <bbk:Obs TIME_PERIOD="1999-04-12" OBS_VALUE="8.13377" BBK_DIFF_A="6.17996"/>
      <bbk:Obs TIME_PERIOD="1999-04-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-04-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-04-09" OBS_VALUE="1.95381" BBK_DIFF_A="-6.04394"/>
      <bbk:Obs TIME_PERIOD="1999-04-08" OBS_VALUE="7.99775" BBK_DIFF_A="6.20736"/>
      <bbk:Obs TIME_PERIOD="1999-04-07" OBS_VALUE="1.79039" BBK_DIFF_A="0.09435"/>
      <bbk:Obs TIME_PERIOD="1999-04-06" OBS_VALUE="1.69604" BBK_DIFF_A="-8.40353"/>
      <bbk:Obs TIME_PERIOD="1999-04-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-04-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-04-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-04-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-04-01" OBS_VALUE="10.09957" BBK_DIFF_A="8.44044"/>
      <bbk:Obs TIME_PERIOD="1999-03-31" OBS_VALUE="1.65913" BBK_DIFF_A="1.6518"/>
      <bbk:Obs TIME_PERIOD="1999-03-30" OBS_VALUE="0.00733" BBK_DIFF_A="-1.61728"/>
      <bbk:Obs TIME_PERIOD="1999-03-29" OBS_VALUE="1.62461" BBK_DIFF_A="0.0755"/>
      <bbk:Obs TIME_PERIOD="1999-03-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-03-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-03-26" OBS_VALUE="1.54911" BBK_DIFF_A="-5.58099"/>
      <bbk:Obs TIME_PERIOD="1999-03-25" OBS_VALUE="7.1301" BBK_DIFF_A="5.4687"/>
      <bbk:Obs TIME_PERIOD="1999-03-24" OBS_VALUE="1.6614" BBK_DIFF_A="-5.74637"/>
      <bbk:Obs TIME_PERIOD="1999-03-23" OBS_VALUE="7.40777" BBK_DIFF_A="5.62023"/>
      <bbk:Obs TIME_PERIOD="1999-03-22" OBS_VALUE="1.78754" BBK_DIFF_A="1.56371"/>
      <bbk:Obs TIME_PERIOD="1999-03-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-03-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-03-19" OBS_VALUE="0.22383" BBK_DIFF_A="-1.41129"/>
      <bbk:Obs TIME_PERIOD="1999-03-18" OBS_VALUE="1.63512" BBK_DIFF_A="0.20738"/>
      <bbk:Obs TIME_PERIOD="1999-03-17" OBS_VALUE="1.42774" BBK_DIFF_A="-4.97775"/>
      <bbk:Obs TIME_PERIOD="1999-03-16" OBS_VALUE="6.40549" BBK_DIFF_A="4.94382"/>
      <bbk:Obs TIME_PERIOD="1999-03-15" OBS_VALUE="1.46167" BBK_DIFF_A="-0.08812"/>
      <bbk:Obs TIME_PERIOD="1999-03-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-03-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-03-12" OBS_VALUE="1.54979" BBK_DIFF_A="0.23972"/>
      <bbk:Obs TIME_PERIOD="1999-03-11" OBS_VALUE="1.31007" BBK_DIFF_A="0.03436"/>
      <bbk:Obs TIME_PERIOD="1999-03-10" OBS_VALUE="1.27571" BBK_DIFF_A="-0.11933"/>
      <bbk:Obs TIME_PERIOD="1999-03-09" OBS_VALUE="1.39504" BBK_DIFF_A="0.14328"/>
      <bbk:Obs TIME_PERIOD="1999-03-08" OBS_VALUE="1.25176" BBK_DIFF_A="-5.14101"/>
      <bbk:Obs TIME_PERIOD="1999-03-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-03-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-03-05" OBS_VALUE="6.39277" BBK_DIFF_A="0.77829"/>
      <bbk:Obs TIME_PERIOD="1999-03-04" OBS_VALUE="5.61448" BBK_DIFF_A="4.47439"/>
      <bbk:Obs TIME_PERIOD="1999-03-03" OBS_VALUE="1.14009" BBK_DIFF_A="-0.00751"/>
      <bbk:Obs TIME_PERIOD="1999-03-02" OBS_VALUE="1.1476" BBK_DIFF_A="-0.08514"/>
      <bbk:Obs TIME_PERIOD="1999-03-01" OBS_VALUE="1.23274" BBK_DIFF_A="1.11214"/>
      <bbk:Obs TIME_PERIOD="1999-02-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-02-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-02-26" OBS_VALUE="0.1206" BBK_DIFF_A="-6.04333"/>
      <bbk:Obs TIME_PERIOD="1999-02-25" OBS_VALUE="6.16393" BBK_DIFF_A="4.64112"/>
      <bbk:Obs TIME_PERIOD="1999-02-24" OBS_VALUE="1.52281" BBK_DIFF_A="0.07919"/>
      <bbk:Obs TIME_PERIOD="1999-02-23" OBS_VALUE="1.44362" BBK_DIFF_A="-0.00999"/>
      <bbk:Obs TIME_PERIOD="1999-02-22" OBS_VALUE="1.45361" BBK_DIFF_A="-0.09983"/>
      <bbk:Obs TIME_PERIOD="1999-02-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-02-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-02-19" OBS_VALUE="1.55344" BBK_DIFF_A="-0.23211"/>
      <bbk:Obs TIME_PERIOD="1999-02-18" OBS_VALUE="1.78555" BBK_DIFF_A="0.31639"/>
      <bbk:Obs TIME_PERIOD="1999-02-17" OBS_VALUE="1.46916" BBK_DIFF_A="-0.55007"/>
      <bbk:Obs TIME_PERIOD="1999-02-16" OBS_VALUE="2.01923" BBK_DIFF_A="0.56196"/>
      <bbk:Obs TIME_PERIOD="1999-02-15" OBS_VALUE="1.45727" BBK_DIFF_A="-0.29307"/>
      <bbk:Obs TIME_PERIOD="1999-02-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-02-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-02-12" OBS_VALUE="1.75034" BBK_DIFF_A="-0.84017"/>
      <bbk:Obs TIME_PERIOD="1999-02-11" OBS_VALUE="2.59051" BBK_DIFF_A="1.05421"/>
      <bbk:Obs TIME_PERIOD="1999-02-10" OBS_VALUE="1.5363" BBK_DIFF_A="0.26678"/>
      <bbk:Obs TIME_PERIOD="1999-02-09" OBS_VALUE="1.26952" BBK_DIFF_A="1.07102"/>
      <bbk:Obs TIME_PERIOD="1999-02-08" OBS_VALUE="0.1985" BBK_DIFF_A="-0.00635"/>
      <bbk:Obs TIME_PERIOD="1999-02-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-02-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-02-05" OBS_VALUE="0.20485" BBK_DIFF_A="-1.34136"/>
      <bbk:Obs TIME_PERIOD="1999-02-04" OBS_VALUE="1.54621" BBK_DIFF_A="-0.03095"/>
      <bbk:Obs TIME_PERIOD="1999-02-03" OBS_VALUE="1.57716" BBK_DIFF_A="1.38909"/>
      <bbk:Obs TIME_PERIOD="1999-02-02" OBS_VALUE="0.18807" BBK_DIFF_A="-0.00412"/>
      <bbk:Obs TIME_PERIOD="1999-02-01" OBS_VALUE="0.19219" BBK_DIFF_A="-5.01852"/>
      <bbk:Obs TIME_PERIOD="1999-01-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-01-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-01-29" OBS_VALUE="5.21071" BBK_DIFF_A="3.62973"/>
      <bbk:Obs TIME_PERIOD="1999-01-28" OBS_VALUE="1.58098" BBK_DIFF_A="0.20054"/>
      <bbk:Obs TIME_PERIOD="1999-01-27" OBS_VALUE="1.38044" BBK_DIFF_A="-0.02442"/>
      <bbk:Obs TIME_PERIOD="1999-01-26" OBS_VALUE="1.40486" BBK_DIFF_A="0.21536"/>
      <bbk:Obs TIME_PERIOD="1999-01-25" OBS_VALUE="1.1895" BBK_DIFF_A="0.09952"/>
      <bbk:Obs TIME_PERIOD="1999-01-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-01-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-01-22" OBS_VALUE="1.08998" BBK_DIFF_A="-0.06322"/>
      <bbk:Obs TIME_PERIOD="1999-01-21" OBS_VALUE="1.1532" BBK_DIFF_A="-0.19661"/>
      <bbk:Obs TIME_PERIOD="1999-01-20" OBS_VALUE="1.34981" BBK_DIFF_A="-0.14681"/>
      <bbk:Obs TIME_PERIOD="1999-01-19" OBS_VALUE="1.49662" BBK_DIFF_A="0.06569"/>
      <bbk:Obs TIME_PERIOD="1999-01-18" OBS_VALUE="1.43093" BBK_DIFF_A="0.09223"/>
      <bbk:Obs TIME_PERIOD="1999-01-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-01-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-01-15" OBS_VALUE="1.3387" BBK_DIFF_A="-0.13842"/>
      <bbk:Obs TIME_PERIOD="1999-01-14" OBS_VALUE="1.47712" BBK_DIFF_A="-3.54919"/>
      <bbk:Obs TIME_PERIOD="1999-01-13" OBS_VALUE="5.02631" BBK_DIFF_A="0.78759"/>
      <bbk:Obs TIME_PERIOD="1999-01-12" OBS_VALUE="4.23872" BBK_DIFF_A="3.0968"/>
      <bbk:Obs TIME_PERIOD="1999-01-11" OBS_VALUE="1.14192" BBK_DIFF_A="-3.03402"/>
      <bbk:Obs TIME_PERIOD="1999-01-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-01-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-01-08" OBS_VALUE="4.17594" BBK_DIFF_A="3.68539"/>
      <bbk:Obs TIME_PERIOD="1999-01-07" OBS_VALUE="0.49055" BBK_DIFF_A="-3.182"/>
      <bbk:Obs TIME_PERIOD="1999-01-06" OBS_VALUE="3.67255" BBK_DIFF_A="-0.08333"/>
      <bbk:Obs TIME_PERIOD="1999-01-05" OBS_VALUE="3.75588" BBK_DIFF_A="3.21682"/>
      <bbk:Obs TIME_PERIOD="1999-01-04" OBS_VALUE="0.53906" BBK_DIFF_A="-29.46094"/>
      <bbk:Obs TIME_PERIOD="1999-01-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-01-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1999-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-12-30" OBS_VALUE="30.0" BBK_DIFF_A="25.79168"/>
      <bbk:Obs TIME_PERIOD="1998-12-29" OBS_VALUE="4.20832" BBK_DIFF_A="0.41797"/>
      <bbk:Obs TIME_PERIOD="1998-12-28" OBS_VALUE="3.79035" BBK_DIFF_A="-0.05964"/>
      <bbk:Obs TIME_PERIOD="1998-12-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-12-23" OBS_VALUE="3.84999" BBK_DIFF_A="-0.04753"/>
      <bbk:Obs TIME_PERIOD="1998-12-22" OBS_VALUE="3.89752" BBK_DIFF_A="1.21691"/>
      <bbk:Obs TIME_PERIOD="1998-12-21" OBS_VALUE="2.68061" BBK_DIFF_A="-1.37578"/>
      <bbk:Obs TIME_PERIOD="1998-12-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-12-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-12-18" OBS_VALUE="4.05639" BBK_DIFF_A="0.20814"/>
      <bbk:Obs TIME_PERIOD="1998-12-17" OBS_VALUE="3.84825" BBK_DIFF_A="1.49497"/>
      <bbk:Obs TIME_PERIOD="1998-12-16" OBS_VALUE="2.35328" BBK_DIFF_A="0.33225"/>
      <bbk:Obs TIME_PERIOD="1998-12-15" OBS_VALUE="2.02103" BBK_DIFF_A="0.62282"/>
      <bbk:Obs TIME_PERIOD="1998-12-14" OBS_VALUE="1.39821" BBK_DIFF_A="-0.56009"/>
      <bbk:Obs TIME_PERIOD="1998-12-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-12-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-12-11" OBS_VALUE="1.9583" BBK_DIFF_A="-0.04728"/>
      <bbk:Obs TIME_PERIOD="1998-12-10" OBS_VALUE="2.00558" BBK_DIFF_A="-0.35004"/>
      <bbk:Obs TIME_PERIOD="1998-12-09" OBS_VALUE="2.35562" BBK_DIFF_A="0.21245"/>
      <bbk:Obs TIME_PERIOD="1998-12-08" OBS_VALUE="2.14317" BBK_DIFF_A="-0.02592"/>
      <bbk:Obs TIME_PERIOD="1998-12-07" OBS_VALUE="2.16909" BBK_DIFF_A="-0.24791"/>
      <bbk:Obs TIME_PERIOD="1998-12-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-12-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-12-04" OBS_VALUE="2.417" BBK_DIFF_A="0.1968"/>
      <bbk:Obs TIME_PERIOD="1998-12-03" OBS_VALUE="2.2202" BBK_DIFF_A="0.28191"/>
      <bbk:Obs TIME_PERIOD="1998-12-02" OBS_VALUE="1.93829" BBK_DIFF_A="0.03547"/>
      <bbk:Obs TIME_PERIOD="1998-12-01" OBS_VALUE="1.90282" BBK_DIFF_A="0.19936"/>
      <bbk:Obs TIME_PERIOD="1998-11-30" OBS_VALUE="1.70346" BBK_DIFF_A="-5.85909"/>
      <bbk:Obs TIME_PERIOD="1998-11-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-11-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-11-27" OBS_VALUE="7.56255" BBK_DIFF_A="5.96746"/>
      <bbk:Obs TIME_PERIOD="1998-11-26" OBS_VALUE="1.59509" BBK_DIFF_A="0.16523"/>
      <bbk:Obs TIME_PERIOD="1998-11-25" OBS_VALUE="1.42986" BBK_DIFF_A="-0.01252"/>
      <bbk:Obs TIME_PERIOD="1998-11-24" OBS_VALUE="1.44238" BBK_DIFF_A="1.28423"/>
      <bbk:Obs TIME_PERIOD="1998-11-23" OBS_VALUE="0.15815" BBK_DIFF_A="-1.22535"/>
      <bbk:Obs TIME_PERIOD="1998-11-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-11-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-11-20" OBS_VALUE="1.3835" BBK_DIFF_A="0.08359"/>
      <bbk:Obs TIME_PERIOD="1998-11-19" OBS_VALUE="1.29991" BBK_DIFF_A="0.1635"/>
      <bbk:Obs TIME_PERIOD="1998-11-18" OBS_VALUE="1.13641" BBK_DIFF_A="0.98305"/>
      <bbk:Obs TIME_PERIOD="1998-11-17" OBS_VALUE="0.15336" BBK_DIFF_A="-0.00832"/>
      <bbk:Obs TIME_PERIOD="1998-11-16" OBS_VALUE="0.16168" BBK_DIFF_A="-0.00322"/>
      <bbk:Obs TIME_PERIOD="1998-11-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-11-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-11-13" OBS_VALUE="0.1649" BBK_DIFF_A="-1.12539"/>
      <bbk:Obs TIME_PERIOD="1998-11-12" OBS_VALUE="1.29029" BBK_DIFF_A="1.12627"/>
      <bbk:Obs TIME_PERIOD="1998-11-11" OBS_VALUE="0.16402" BBK_DIFF_A="-0.0205"/>
      <bbk:Obs TIME_PERIOD="1998-11-10" OBS_VALUE="0.18452" BBK_DIFF_A="-0.00103"/>
      <bbk:Obs TIME_PERIOD="1998-11-09" OBS_VALUE="0.18555" BBK_DIFF_A="0.00338"/>
      <bbk:Obs TIME_PERIOD="1998-11-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-11-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-11-06" OBS_VALUE="0.18217" BBK_DIFF_A="-1.25536"/>
      <bbk:Obs TIME_PERIOD="1998-11-05" OBS_VALUE="1.43753" BBK_DIFF_A="1.24419"/>
      <bbk:Obs TIME_PERIOD="1998-11-04" OBS_VALUE="0.19334" BBK_DIFF_A="-1.19104"/>
      <bbk:Obs TIME_PERIOD="1998-11-03" OBS_VALUE="1.38438" BBK_DIFF_A="-6.73644"/>
      <bbk:Obs TIME_PERIOD="1998-11-02" OBS_VALUE="8.12082" BBK_DIFF_A="6.75097"/>
      <bbk:Obs TIME_PERIOD="1998-11-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-10-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-10-30" OBS_VALUE="1.36985" BBK_DIFF_A="-0.06032"/>
      <bbk:Obs TIME_PERIOD="1998-10-29" OBS_VALUE="1.43017" BBK_DIFF_A="0.04156"/>
      <bbk:Obs TIME_PERIOD="1998-10-28" OBS_VALUE="1.38861" BBK_DIFF_A="-0.07056"/>
      <bbk:Obs TIME_PERIOD="1998-10-27" OBS_VALUE="1.45917" BBK_DIFF_A="-6.27798"/>
      <bbk:Obs TIME_PERIOD="1998-10-26" OBS_VALUE="7.73715" BBK_DIFF_A="6.21404"/>
      <bbk:Obs TIME_PERIOD="1998-10-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-10-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-10-23" OBS_VALUE="1.52311" BBK_DIFF_A="-5.3E-4"/>
      <bbk:Obs TIME_PERIOD="1998-10-22" OBS_VALUE="1.52364" BBK_DIFF_A="-0.10854"/>
      <bbk:Obs TIME_PERIOD="1998-10-21" OBS_VALUE="1.63218" BBK_DIFF_A="-0.38474"/>
      <bbk:Obs TIME_PERIOD="1998-10-20" OBS_VALUE="2.01692" BBK_DIFF_A="0.12994"/>
      <bbk:Obs TIME_PERIOD="1998-10-19" OBS_VALUE="1.88698" BBK_DIFF_A="0.02006"/>
      <bbk:Obs TIME_PERIOD="1998-10-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-10-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-10-16" OBS_VALUE="1.86692" BBK_DIFF_A="0.16641"/>
      <bbk:Obs TIME_PERIOD="1998-10-15" OBS_VALUE="1.70051" BBK_DIFF_A="0.18539"/>
      <bbk:Obs TIME_PERIOD="1998-10-14" OBS_VALUE="1.51512" BBK_DIFF_A="0.27898"/>
      <bbk:Obs TIME_PERIOD="1998-10-13" OBS_VALUE="1.23614" BBK_DIFF_A="-8.57407"/>
      <bbk:Obs TIME_PERIOD="1998-10-12" OBS_VALUE="9.81021" BBK_DIFF_A="8.83331"/>
      <bbk:Obs TIME_PERIOD="1998-10-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-10-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-10-09" OBS_VALUE="0.9769" BBK_DIFF_A="-7.49235"/>
      <bbk:Obs TIME_PERIOD="1998-10-08" OBS_VALUE="8.46925" BBK_DIFF_A="8.27839"/>
      <bbk:Obs TIME_PERIOD="1998-10-07" OBS_VALUE="0.19086" BBK_DIFF_A="-1.27553"/>
      <bbk:Obs TIME_PERIOD="1998-10-06" OBS_VALUE="1.46639" BBK_DIFF_A="0.0406"/>
      <bbk:Obs TIME_PERIOD="1998-10-05" OBS_VALUE="1.42579" BBK_DIFF_A="-0.22957"/>
      <bbk:Obs TIME_PERIOD="1998-10-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-10-02" OBS_VALUE="1.65536" BBK_DIFF_A="0.1084"/>
      <bbk:Obs TIME_PERIOD="1998-10-01" OBS_VALUE="1.54696" BBK_DIFF_A="1.40589"/>
      <bbk:Obs TIME_PERIOD="1998-09-30" OBS_VALUE="0.14107" BBK_DIFF_A="-0.12284"/>
      <bbk:Obs TIME_PERIOD="1998-09-29" OBS_VALUE="0.26391" BBK_DIFF_A="-1.62745"/>
      <bbk:Obs TIME_PERIOD="1998-09-28" OBS_VALUE="1.89136" BBK_DIFF_A="-4.7491"/>
      <bbk:Obs TIME_PERIOD="1998-09-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-09-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-09-25" OBS_VALUE="6.64046" BBK_DIFF_A="6.3807"/>
      <bbk:Obs TIME_PERIOD="1998-09-24" OBS_VALUE="0.25976" BBK_DIFF_A="-8.81964"/>
      <bbk:Obs TIME_PERIOD="1998-09-23" OBS_VALUE="9.0794" BBK_DIFF_A="2.34742"/>
      <bbk:Obs TIME_PERIOD="1998-09-22" OBS_VALUE="6.73198" BBK_DIFF_A="4.32709"/>
      <bbk:Obs TIME_PERIOD="1998-09-21" OBS_VALUE="2.40489" BBK_DIFF_A="2.0924"/>
      <bbk:Obs TIME_PERIOD="1998-09-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-09-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-09-18" OBS_VALUE="0.31249" BBK_DIFF_A="0.31117"/>
      <bbk:Obs TIME_PERIOD="1998-09-17" OBS_VALUE="0.00132" BBK_DIFF_A="-5.62238"/>
      <bbk:Obs TIME_PERIOD="1998-09-16" OBS_VALUE="5.6237" BBK_DIFF_A="3.11395"/>
      <bbk:Obs TIME_PERIOD="1998-09-15" OBS_VALUE="2.50975" BBK_DIFF_A="0.45272"/>
      <bbk:Obs TIME_PERIOD="1998-09-14" OBS_VALUE="2.05703" BBK_DIFF_A="-1.6117"/>
      <bbk:Obs TIME_PERIOD="1998-09-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-09-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-09-11" OBS_VALUE="3.66873" BBK_DIFF_A="1.15009"/>
      <bbk:Obs TIME_PERIOD="1998-09-10" OBS_VALUE="2.51864" BBK_DIFF_A="0.36259"/>
      <bbk:Obs TIME_PERIOD="1998-09-09" OBS_VALUE="2.15605" BBK_DIFF_A="-1.04263"/>
      <bbk:Obs TIME_PERIOD="1998-09-08" OBS_VALUE="3.19868" BBK_DIFF_A="-0.01617"/>
      <bbk:Obs TIME_PERIOD="1998-09-07" OBS_VALUE="3.21485" BBK_DIFF_A="-0.43368"/>
      <bbk:Obs TIME_PERIOD="1998-09-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-09-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-09-04" OBS_VALUE="3.64853" BBK_DIFF_A="0.31838"/>
      <bbk:Obs TIME_PERIOD="1998-09-03" OBS_VALUE="3.33015" BBK_DIFF_A="-0.15202"/>
      <bbk:Obs TIME_PERIOD="1998-09-02" OBS_VALUE="3.48217" BBK_DIFF_A="1.77125"/>
      <bbk:Obs TIME_PERIOD="1998-09-01" OBS_VALUE="1.71092" BBK_DIFF_A="0.18642"/>
      <bbk:Obs TIME_PERIOD="1998-08-31" OBS_VALUE="1.5245" BBK_DIFF_A="-0.66204"/>
      <bbk:Obs TIME_PERIOD="1998-08-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-08-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-08-28" OBS_VALUE="2.18654" BBK_DIFF_A="-5.55314"/>
      <bbk:Obs TIME_PERIOD="1998-08-27" OBS_VALUE="7.73968" BBK_DIFF_A="-16.31941"/>
      <bbk:Obs TIME_PERIOD="1998-08-26" OBS_VALUE="24.05909" BBK_DIFF_A="19.85848"/>
      <bbk:Obs TIME_PERIOD="1998-08-25" OBS_VALUE="4.20061" BBK_DIFF_A="3.88432"/>
      <bbk:Obs TIME_PERIOD="1998-08-24" OBS_VALUE="0.31629" BBK_DIFF_A="-4.37982"/>
      <bbk:Obs TIME_PERIOD="1998-08-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-08-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-08-21" OBS_VALUE="4.69611" BBK_DIFF_A="-4.83521"/>
      <bbk:Obs TIME_PERIOD="1998-08-20" OBS_VALUE="9.53132" BBK_DIFF_A="-18.21718"/>
      <bbk:Obs TIME_PERIOD="1998-08-19" OBS_VALUE="27.7485" BBK_DIFF_A="27.30625"/>
      <bbk:Obs TIME_PERIOD="1998-08-18" OBS_VALUE="0.44225" BBK_DIFF_A="-2.06313"/>
      <bbk:Obs TIME_PERIOD="1998-08-17" OBS_VALUE="2.50538" BBK_DIFF_A="-1.16933"/>
      <bbk:Obs TIME_PERIOD="1998-08-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-08-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-08-14" OBS_VALUE="3.67471" BBK_DIFF_A="0.15077"/>
      <bbk:Obs TIME_PERIOD="1998-08-13" OBS_VALUE="3.52394" BBK_DIFF_A="-3.29156"/>
      <bbk:Obs TIME_PERIOD="1998-08-12" OBS_VALUE="6.8155" BBK_DIFF_A="5.45784"/>
      <bbk:Obs TIME_PERIOD="1998-08-11" OBS_VALUE="1.35766" BBK_DIFF_A="-4.6502"/>
      <bbk:Obs TIME_PERIOD="1998-08-10" OBS_VALUE="6.00786" BBK_DIFF_A="1.98785"/>
      <bbk:Obs TIME_PERIOD="1998-08-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-08-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-08-07" OBS_VALUE="4.02001" BBK_DIFF_A="0.65939"/>
      <bbk:Obs TIME_PERIOD="1998-08-06" OBS_VALUE="3.36062" BBK_DIFF_A="-0.2915"/>
      <bbk:Obs TIME_PERIOD="1998-08-05" OBS_VALUE="3.65212" BBK_DIFF_A="-1.08576"/>
      <bbk:Obs TIME_PERIOD="1998-08-04" OBS_VALUE="4.73788" BBK_DIFF_A="-2.79741"/>
      <bbk:Obs TIME_PERIOD="1998-08-03" OBS_VALUE="7.53529" BBK_DIFF_A="2.51165"/>
      <bbk:Obs TIME_PERIOD="1998-08-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-08-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-07-31" OBS_VALUE="5.02364" BBK_DIFF_A="0.42727"/>
      <bbk:Obs TIME_PERIOD="1998-07-30" OBS_VALUE="4.59637" BBK_DIFF_A="0.90373"/>
      <bbk:Obs TIME_PERIOD="1998-07-29" OBS_VALUE="3.69264" BBK_DIFF_A="-2.61663"/>
      <bbk:Obs TIME_PERIOD="1998-07-28" OBS_VALUE="6.30927" BBK_DIFF_A="0.3908"/>
      <bbk:Obs TIME_PERIOD="1998-07-27" OBS_VALUE="5.91847" BBK_DIFF_A="-0.75884"/>
      <bbk:Obs TIME_PERIOD="1998-07-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-07-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-07-24" OBS_VALUE="6.67731" BBK_DIFF_A="0.51251"/>
      <bbk:Obs TIME_PERIOD="1998-07-23" OBS_VALUE="6.1648" BBK_DIFF_A="2.71671"/>
      <bbk:Obs TIME_PERIOD="1998-07-22" OBS_VALUE="3.44809" BBK_DIFF_A="-0.75389"/>
      <bbk:Obs TIME_PERIOD="1998-07-21" OBS_VALUE="4.20198" BBK_DIFF_A="-0.81237"/>
      <bbk:Obs TIME_PERIOD="1998-07-20" OBS_VALUE="5.01435" BBK_DIFF_A="-0.26263"/>
      <bbk:Obs TIME_PERIOD="1998-07-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-07-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-07-17" OBS_VALUE="5.27698" BBK_DIFF_A="0.8984"/>
      <bbk:Obs TIME_PERIOD="1998-07-16" OBS_VALUE="4.37858" BBK_DIFF_A="-1.10149"/>
      <bbk:Obs TIME_PERIOD="1998-07-15" OBS_VALUE="5.48007" BBK_DIFF_A="0.24441"/>
      <bbk:Obs TIME_PERIOD="1998-07-14" OBS_VALUE="5.23566" BBK_DIFF_A="1.63706"/>
      <bbk:Obs TIME_PERIOD="1998-07-13" OBS_VALUE="3.5986" BBK_DIFF_A="-0.31067"/>
      <bbk:Obs TIME_PERIOD="1998-07-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-07-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-07-10" OBS_VALUE="3.90927" BBK_DIFF_A="1.4529"/>
      <bbk:Obs TIME_PERIOD="1998-07-09" OBS_VALUE="2.45637" BBK_DIFF_A="1.04085"/>
      <bbk:Obs TIME_PERIOD="1998-07-08" OBS_VALUE="1.41552" BBK_DIFF_A="-0.03885"/>
      <bbk:Obs TIME_PERIOD="1998-07-07" OBS_VALUE="1.45437" BBK_DIFF_A="0.03224"/>
      <bbk:Obs TIME_PERIOD="1998-07-06" OBS_VALUE="1.42213" BBK_DIFF_A="-0.98438"/>
      <bbk:Obs TIME_PERIOD="1998-07-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-07-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-07-03" OBS_VALUE="2.40651" BBK_DIFF_A="0.96216"/>
      <bbk:Obs TIME_PERIOD="1998-07-02" OBS_VALUE="1.44435" BBK_DIFF_A="-0.98052"/>
      <bbk:Obs TIME_PERIOD="1998-07-01" OBS_VALUE="2.42487" BBK_DIFF_A="0.92371"/>
      <bbk:Obs TIME_PERIOD="1998-06-30" OBS_VALUE="1.50116" BBK_DIFF_A="-0.96791"/>
      <bbk:Obs TIME_PERIOD="1998-06-29" OBS_VALUE="2.46907" BBK_DIFF_A="-0.06842"/>
      <bbk:Obs TIME_PERIOD="1998-06-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-06-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-06-26" OBS_VALUE="2.53749" BBK_DIFF_A="-0.14495"/>
      <bbk:Obs TIME_PERIOD="1998-06-25" OBS_VALUE="2.68244" BBK_DIFF_A="-0.14113"/>
      <bbk:Obs TIME_PERIOD="1998-06-24" OBS_VALUE="2.82357" BBK_DIFF_A="0.17918"/>
      <bbk:Obs TIME_PERIOD="1998-06-23" OBS_VALUE="2.64439" BBK_DIFF_A="0.05997"/>
      <bbk:Obs TIME_PERIOD="1998-06-22" OBS_VALUE="2.58442" BBK_DIFF_A="-0.11145"/>
      <bbk:Obs TIME_PERIOD="1998-06-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-06-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-06-19" OBS_VALUE="2.69587" BBK_DIFF_A="0.031"/>
      <bbk:Obs TIME_PERIOD="1998-06-18" OBS_VALUE="2.66487" BBK_DIFF_A="-0.07991"/>
      <bbk:Obs TIME_PERIOD="1998-06-17" OBS_VALUE="2.74478" BBK_DIFF_A="0.18358"/>
      <bbk:Obs TIME_PERIOD="1998-06-16" OBS_VALUE="2.5612" BBK_DIFF_A="-0.45602"/>
      <bbk:Obs TIME_PERIOD="1998-06-15" OBS_VALUE="3.01722" BBK_DIFF_A="-0.10176"/>
      <bbk:Obs TIME_PERIOD="1998-06-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-06-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-06-12" OBS_VALUE="3.11898" BBK_DIFF_A="-1.03236"/>
      <bbk:Obs TIME_PERIOD="1998-06-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-06-10" OBS_VALUE="4.15134" BBK_DIFF_A="0.10409"/>
      <bbk:Obs TIME_PERIOD="1998-06-09" OBS_VALUE="4.04725" BBK_DIFF_A="-0.24858"/>
      <bbk:Obs TIME_PERIOD="1998-06-08" OBS_VALUE="4.29583" BBK_DIFF_A="0.28415"/>
      <bbk:Obs TIME_PERIOD="1998-06-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-06-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-06-05" OBS_VALUE="4.01168" BBK_DIFF_A="-0.17339"/>
      <bbk:Obs TIME_PERIOD="1998-06-04" OBS_VALUE="4.18507" BBK_DIFF_A="0.15731"/>
      <bbk:Obs TIME_PERIOD="1998-06-03" OBS_VALUE="4.02776" BBK_DIFF_A="-4.13157"/>
      <bbk:Obs TIME_PERIOD="1998-06-02" OBS_VALUE="8.15933" BBK_DIFF_A="0.37924"/>
      <bbk:Obs TIME_PERIOD="1998-06-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-05-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-05-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-05-29" OBS_VALUE="7.78009" BBK_DIFF_A="2.74884"/>
      <bbk:Obs TIME_PERIOD="1998-05-28" OBS_VALUE="5.03125" BBK_DIFF_A="0.67807"/>
      <bbk:Obs TIME_PERIOD="1998-05-27" OBS_VALUE="4.35318" BBK_DIFF_A="-0.95884"/>
      <bbk:Obs TIME_PERIOD="1998-05-26" OBS_VALUE="5.31202" BBK_DIFF_A="-0.23296"/>
      <bbk:Obs TIME_PERIOD="1998-05-25" OBS_VALUE="5.54498" BBK_DIFF_A="-0.0055"/>
      <bbk:Obs TIME_PERIOD="1998-05-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-05-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-05-22" OBS_VALUE="5.55048" BBK_DIFF_A="1.84536"/>
      <bbk:Obs TIME_PERIOD="1998-05-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-05-20" OBS_VALUE="3.70512" BBK_DIFF_A="-1.65222"/>
      <bbk:Obs TIME_PERIOD="1998-05-19" OBS_VALUE="5.35734" BBK_DIFF_A="-4.25397"/>
      <bbk:Obs TIME_PERIOD="1998-05-18" OBS_VALUE="9.61131" BBK_DIFF_A="5.0713"/>
      <bbk:Obs TIME_PERIOD="1998-05-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-05-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-05-15" OBS_VALUE="4.54001" BBK_DIFF_A="2.22246"/>
      <bbk:Obs TIME_PERIOD="1998-05-14" OBS_VALUE="2.31755" BBK_DIFF_A="0.36538"/>
      <bbk:Obs TIME_PERIOD="1998-05-13" OBS_VALUE="1.95217" BBK_DIFF_A="-0.00269"/>
      <bbk:Obs TIME_PERIOD="1998-05-12" OBS_VALUE="1.95486" BBK_DIFF_A="1.5926"/>
      <bbk:Obs TIME_PERIOD="1998-05-11" OBS_VALUE="0.36226" BBK_DIFF_A="-2.66853"/>
      <bbk:Obs TIME_PERIOD="1998-05-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-05-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-05-08" OBS_VALUE="3.03079" BBK_DIFF_A="-0.9255"/>
      <bbk:Obs TIME_PERIOD="1998-05-07" OBS_VALUE="3.95629" BBK_DIFF_A="-1.95629"/>
      <bbk:Obs TIME_PERIOD="1998-05-06" OBS_VALUE="5.91258" BBK_DIFF_A="0.19011"/>
      <bbk:Obs TIME_PERIOD="1998-05-05" OBS_VALUE="5.72247" BBK_DIFF_A="1.37187"/>
      <bbk:Obs TIME_PERIOD="1998-05-04" OBS_VALUE="4.3506" BBK_DIFF_A="-3.15607"/>
      <bbk:Obs TIME_PERIOD="1998-05-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-05-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-05-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-04-30" OBS_VALUE="7.50667" BBK_DIFF_A="0.2501"/>
      <bbk:Obs TIME_PERIOD="1998-04-29" OBS_VALUE="7.25657" BBK_DIFF_A="-1.49315"/>
      <bbk:Obs TIME_PERIOD="1998-04-28" OBS_VALUE="8.74972" BBK_DIFF_A="2.50864"/>
      <bbk:Obs TIME_PERIOD="1998-04-27" OBS_VALUE="6.24108" BBK_DIFF_A="-0.67015"/>
      <bbk:Obs TIME_PERIOD="1998-04-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-04-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-04-24" OBS_VALUE="6.91123" BBK_DIFF_A="2.69129"/>
      <bbk:Obs TIME_PERIOD="1998-04-23" OBS_VALUE="4.21994" BBK_DIFF_A="-2.27253"/>
      <bbk:Obs TIME_PERIOD="1998-04-22" OBS_VALUE="6.49247" BBK_DIFF_A="2.19874"/>
      <bbk:Obs TIME_PERIOD="1998-04-21" OBS_VALUE="4.29373" BBK_DIFF_A="-3.70723"/>
      <bbk:Obs TIME_PERIOD="1998-04-20" OBS_VALUE="8.00096" BBK_DIFF_A="3.48594"/>
      <bbk:Obs TIME_PERIOD="1998-04-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-04-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-04-17" OBS_VALUE="4.51502" BBK_DIFF_A="-1.31406"/>
      <bbk:Obs TIME_PERIOD="1998-04-16" OBS_VALUE="5.82908" BBK_DIFF_A="-0.13687"/>
      <bbk:Obs TIME_PERIOD="1998-04-15" OBS_VALUE="5.96595" BBK_DIFF_A="1.37559"/>
      <bbk:Obs TIME_PERIOD="1998-04-14" OBS_VALUE="4.59036" BBK_DIFF_A="-1.21682"/>
      <bbk:Obs TIME_PERIOD="1998-04-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-04-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-04-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-04-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-04-09" OBS_VALUE="5.80718" BBK_DIFF_A="1.21672"/>
      <bbk:Obs TIME_PERIOD="1998-04-08" OBS_VALUE="4.59046" BBK_DIFF_A="-1.00794"/>
      <bbk:Obs TIME_PERIOD="1998-04-07" OBS_VALUE="5.5984" BBK_DIFF_A="3.64895"/>
      <bbk:Obs TIME_PERIOD="1998-04-06" OBS_VALUE="1.94945" BBK_DIFF_A="-2.40304"/>
      <bbk:Obs TIME_PERIOD="1998-04-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-04-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-04-03" OBS_VALUE="4.35249" BBK_DIFF_A="-1.78297"/>
      <bbk:Obs TIME_PERIOD="1998-04-02" OBS_VALUE="6.13546" BBK_DIFF_A="-3.11036"/>
      <bbk:Obs TIME_PERIOD="1998-04-01" OBS_VALUE="9.24582" BBK_DIFF_A="4.95996"/>
      <bbk:Obs TIME_PERIOD="1998-03-31" OBS_VALUE="4.28586" BBK_DIFF_A="-13.94792"/>
      <bbk:Obs TIME_PERIOD="1998-03-30" OBS_VALUE="18.23378" BBK_DIFF_A="14.29686"/>
      <bbk:Obs TIME_PERIOD="1998-03-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-03-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-03-27" OBS_VALUE="3.93692" BBK_DIFF_A="1.9868"/>
      <bbk:Obs TIME_PERIOD="1998-03-26" OBS_VALUE="1.95012" BBK_DIFF_A="-0.85514"/>
      <bbk:Obs TIME_PERIOD="1998-03-25" OBS_VALUE="2.80526" BBK_DIFF_A="-2.63482"/>
      <bbk:Obs TIME_PERIOD="1998-03-24" OBS_VALUE="5.44008" BBK_DIFF_A="2.75999"/>
      <bbk:Obs TIME_PERIOD="1998-03-23" OBS_VALUE="2.68009" BBK_DIFF_A="-1.75743"/>
      <bbk:Obs TIME_PERIOD="1998-03-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-03-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-03-20" OBS_VALUE="4.43752" BBK_DIFF_A="-1.01575"/>
      <bbk:Obs TIME_PERIOD="1998-03-19" OBS_VALUE="5.45327" BBK_DIFF_A="-3.55361"/>
      <bbk:Obs TIME_PERIOD="1998-03-18" OBS_VALUE="9.00688" BBK_DIFF_A="3.74275"/>
      <bbk:Obs TIME_PERIOD="1998-03-17" OBS_VALUE="5.26413" BBK_DIFF_A="0.11233"/>
      <bbk:Obs TIME_PERIOD="1998-03-16" OBS_VALUE="5.1518" BBK_DIFF_A="-2.91386"/>
      <bbk:Obs TIME_PERIOD="1998-03-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-03-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-03-13" OBS_VALUE="8.06566" BBK_DIFF_A="1.17361"/>
      <bbk:Obs TIME_PERIOD="1998-03-12" OBS_VALUE="6.89205" BBK_DIFF_A="-0.10903"/>
      <bbk:Obs TIME_PERIOD="1998-03-11" OBS_VALUE="7.00108" BBK_DIFF_A="0.41946"/>
      <bbk:Obs TIME_PERIOD="1998-03-10" OBS_VALUE="6.58162" BBK_DIFF_A="0.7759"/>
      <bbk:Obs TIME_PERIOD="1998-03-09" OBS_VALUE="5.80572" BBK_DIFF_A="-4.55374"/>
      <bbk:Obs TIME_PERIOD="1998-03-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-03-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-03-06" OBS_VALUE="10.35946" BBK_DIFF_A="3.01502"/>
      <bbk:Obs TIME_PERIOD="1998-03-05" OBS_VALUE="7.34444" BBK_DIFF_A="-1.10607"/>
      <bbk:Obs TIME_PERIOD="1998-03-04" OBS_VALUE="8.45051" BBK_DIFF_A="2.20144"/>
      <bbk:Obs TIME_PERIOD="1998-03-03" OBS_VALUE="6.24907" BBK_DIFF_A="-4.01086"/>
      <bbk:Obs TIME_PERIOD="1998-03-02" OBS_VALUE="10.25993" BBK_DIFF_A="6.33368"/>
      <bbk:Obs TIME_PERIOD="1998-03-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-02-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-02-27" OBS_VALUE="3.92625" BBK_DIFF_A="-0.34363"/>
      <bbk:Obs TIME_PERIOD="1998-02-26" OBS_VALUE="4.26988" BBK_DIFF_A="-0.35759"/>
      <bbk:Obs TIME_PERIOD="1998-02-25" OBS_VALUE="4.62747" BBK_DIFF_A="0.24559"/>
      <bbk:Obs TIME_PERIOD="1998-02-24" OBS_VALUE="4.38188" BBK_DIFF_A="-0.02906"/>
      <bbk:Obs TIME_PERIOD="1998-02-23" OBS_VALUE="4.41094" BBK_DIFF_A="-4.45523"/>
      <bbk:Obs TIME_PERIOD="1998-02-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-02-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-02-20" OBS_VALUE="8.86617" BBK_DIFF_A="4.70538"/>
      <bbk:Obs TIME_PERIOD="1998-02-19" OBS_VALUE="4.16079" BBK_DIFF_A="-4.7605"/>
      <bbk:Obs TIME_PERIOD="1998-02-18" OBS_VALUE="8.92129" BBK_DIFF_A="4.72726"/>
      <bbk:Obs TIME_PERIOD="1998-02-17" OBS_VALUE="4.19403" BBK_DIFF_A="-0.94527"/>
      <bbk:Obs TIME_PERIOD="1998-02-16" OBS_VALUE="5.1393" BBK_DIFF_A="1.7946"/>
      <bbk:Obs TIME_PERIOD="1998-02-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-02-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-02-13" OBS_VALUE="3.3447" BBK_DIFF_A="0.15279"/>
      <bbk:Obs TIME_PERIOD="1998-02-12" OBS_VALUE="3.19191" BBK_DIFF_A="-3.31577"/>
      <bbk:Obs TIME_PERIOD="1998-02-11" OBS_VALUE="6.50768" BBK_DIFF_A="4.91802"/>
      <bbk:Obs TIME_PERIOD="1998-02-10" OBS_VALUE="1.58966" BBK_DIFF_A="-15.19787"/>
      <bbk:Obs TIME_PERIOD="1998-02-09" OBS_VALUE="16.78753" BBK_DIFF_A="10.20419"/>
      <bbk:Obs TIME_PERIOD="1998-02-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-02-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-02-06" OBS_VALUE="6.58334" BBK_DIFF_A="3.99478"/>
      <bbk:Obs TIME_PERIOD="1998-02-05" OBS_VALUE="2.58856" BBK_DIFF_A="-6.90015"/>
      <bbk:Obs TIME_PERIOD="1998-02-04" OBS_VALUE="9.48871" BBK_DIFF_A="-10.63393"/>
      <bbk:Obs TIME_PERIOD="1998-02-03" OBS_VALUE="20.12264" BBK_DIFF_A="16.48799"/>
      <bbk:Obs TIME_PERIOD="1998-02-02" OBS_VALUE="3.63465" BBK_DIFF_A="-10.19168"/>
      <bbk:Obs TIME_PERIOD="1998-02-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-01-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-01-30" OBS_VALUE="13.82633" BBK_DIFF_A="8.54868"/>
      <bbk:Obs TIME_PERIOD="1998-01-29" OBS_VALUE="5.27765" BBK_DIFF_A="2.97604"/>
      <bbk:Obs TIME_PERIOD="1998-01-28" OBS_VALUE="2.30161" BBK_DIFF_A="0.29197"/>
      <bbk:Obs TIME_PERIOD="1998-01-27" OBS_VALUE="2.00964" BBK_DIFF_A="-0.67209"/>
      <bbk:Obs TIME_PERIOD="1998-01-26" OBS_VALUE="2.68173" BBK_DIFF_A="0.75333"/>
      <bbk:Obs TIME_PERIOD="1998-01-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-01-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-01-23" OBS_VALUE="1.9284" BBK_DIFF_A="-9.65506"/>
      <bbk:Obs TIME_PERIOD="1998-01-22" OBS_VALUE="11.58346" BBK_DIFF_A="8.66281"/>
      <bbk:Obs TIME_PERIOD="1998-01-21" OBS_VALUE="2.92065" BBK_DIFF_A="-0.37234"/>
      <bbk:Obs TIME_PERIOD="1998-01-20" OBS_VALUE="3.29299" BBK_DIFF_A="-6.11234"/>
      <bbk:Obs TIME_PERIOD="1998-01-19" OBS_VALUE="9.40533" BBK_DIFF_A="-0.99911"/>
      <bbk:Obs TIME_PERIOD="1998-01-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-01-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-01-16" OBS_VALUE="10.40444" BBK_DIFF_A="-0.80707"/>
      <bbk:Obs TIME_PERIOD="1998-01-15" OBS_VALUE="11.21151" BBK_DIFF_A="6.81245"/>
      <bbk:Obs TIME_PERIOD="1998-01-14" OBS_VALUE="4.39906" BBK_DIFF_A="-5.5115"/>
      <bbk:Obs TIME_PERIOD="1998-01-13" OBS_VALUE="9.91056" BBK_DIFF_A="8.91495"/>
      <bbk:Obs TIME_PERIOD="1998-01-12" OBS_VALUE="0.99561" BBK_DIFF_A="-1.25426"/>
      <bbk:Obs TIME_PERIOD="1998-01-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-01-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-01-09" OBS_VALUE="2.24987" BBK_DIFF_A="-0.83573"/>
      <bbk:Obs TIME_PERIOD="1998-01-08" OBS_VALUE="3.0856" BBK_DIFF_A="-2.66023"/>
      <bbk:Obs TIME_PERIOD="1998-01-07" OBS_VALUE="5.74583" BBK_DIFF_A="0.59483"/>
      <bbk:Obs TIME_PERIOD="1998-01-06" OBS_VALUE="5.151" BBK_DIFF_A="1.58495"/>
      <bbk:Obs TIME_PERIOD="1998-01-05" OBS_VALUE="3.56605" BBK_DIFF_A="-2.62339"/>
      <bbk:Obs TIME_PERIOD="1998-01-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-01-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1998-01-02" OBS_VALUE="6.18944" BBK_DIFF_A="2.89447"/>
      <bbk:Obs TIME_PERIOD="1998-01-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-12-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-12-30" OBS_VALUE="3.29497" BBK_DIFF_A="-4.0887"/>
      <bbk:Obs TIME_PERIOD="1997-12-29" OBS_VALUE="7.38367" BBK_DIFF_A="3.65444"/>
      <bbk:Obs TIME_PERIOD="1997-12-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-12-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-12-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-12-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-12-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-12-23" OBS_VALUE="3.72923" BBK_DIFF_A="-14.10931"/>
      <bbk:Obs TIME_PERIOD="1997-12-22" OBS_VALUE="17.83854" BBK_DIFF_A="13.45507"/>
      <bbk:Obs TIME_PERIOD="1997-12-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-12-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-12-19" OBS_VALUE="4.38347" BBK_DIFF_A="-4.5318"/>
      <bbk:Obs TIME_PERIOD="1997-12-18" OBS_VALUE="8.91527" BBK_DIFF_A="1.67063"/>
      <bbk:Obs TIME_PERIOD="1997-12-17" OBS_VALUE="7.24464" BBK_DIFF_A="3.96623"/>
      <bbk:Obs TIME_PERIOD="1997-12-16" OBS_VALUE="3.27841" BBK_DIFF_A="-5.22838"/>
      <bbk:Obs TIME_PERIOD="1997-12-15" OBS_VALUE="8.50679" BBK_DIFF_A="4.28934"/>
      <bbk:Obs TIME_PERIOD="1997-12-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-12-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-12-12" OBS_VALUE="4.21745" BBK_DIFF_A="-1.1435"/>
      <bbk:Obs TIME_PERIOD="1997-12-11" OBS_VALUE="5.36095" BBK_DIFF_A="0.74774"/>
      <bbk:Obs TIME_PERIOD="1997-12-10" OBS_VALUE="4.61321" BBK_DIFF_A="-1.87629"/>
      <bbk:Obs TIME_PERIOD="1997-12-09" OBS_VALUE="6.4895" BBK_DIFF_A="-0.96829"/>
      <bbk:Obs TIME_PERIOD="1997-12-08" OBS_VALUE="7.45779" BBK_DIFF_A="2.38272"/>
      <bbk:Obs TIME_PERIOD="1997-12-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-12-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-12-05" OBS_VALUE="5.07507" BBK_DIFF_A="-0.85877"/>
      <bbk:Obs TIME_PERIOD="1997-12-04" OBS_VALUE="5.93384" BBK_DIFF_A="-1.87898"/>
      <bbk:Obs TIME_PERIOD="1997-12-03" OBS_VALUE="7.81282" BBK_DIFF_A="1.47701"/>
      <bbk:Obs TIME_PERIOD="1997-12-02" OBS_VALUE="6.33581" BBK_DIFF_A="-0.9038"/>
      <bbk:Obs TIME_PERIOD="1997-12-01" OBS_VALUE="7.23961" BBK_DIFF_A="-0.31787"/>
      <bbk:Obs TIME_PERIOD="1997-11-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-11-29" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-11-28" OBS_VALUE="7.55748" BBK_DIFF_A="1.18748"/>
      <bbk:Obs TIME_PERIOD="1997-11-27" OBS_VALUE="6.37" BBK_DIFF_A="-3.5093"/>
      <bbk:Obs TIME_PERIOD="1997-11-26" OBS_VALUE="9.8793" BBK_DIFF_A="-1.41899"/>
      <bbk:Obs TIME_PERIOD="1997-11-25" OBS_VALUE="11.29829" BBK_DIFF_A="4.74874"/>
      <bbk:Obs TIME_PERIOD="1997-11-24" OBS_VALUE="6.54955" BBK_DIFF_A="-5.72038"/>
      <bbk:Obs TIME_PERIOD="1997-11-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-11-22" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-11-21" OBS_VALUE="12.26993" BBK_DIFF_A="6.02182"/>
      <bbk:Obs TIME_PERIOD="1997-11-20" OBS_VALUE="6.24811" BBK_DIFF_A="-3.11679"/>
      <bbk:Obs TIME_PERIOD="1997-11-19" OBS_VALUE="9.3649" BBK_DIFF_A="-0.4377"/>
      <bbk:Obs TIME_PERIOD="1997-11-18" OBS_VALUE="9.8026" BBK_DIFF_A="1.95168"/>
      <bbk:Obs TIME_PERIOD="1997-11-17" OBS_VALUE="7.85092" BBK_DIFF_A="-3.14353"/>
      <bbk:Obs TIME_PERIOD="1997-11-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-11-15" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-11-14" OBS_VALUE="10.99445" BBK_DIFF_A="0.27554"/>
      <bbk:Obs TIME_PERIOD="1997-11-13" OBS_VALUE="10.71891" BBK_DIFF_A="2.17728"/>
      <bbk:Obs TIME_PERIOD="1997-11-12" OBS_VALUE="8.54163" BBK_DIFF_A="4.51903"/>
      <bbk:Obs TIME_PERIOD="1997-11-11" OBS_VALUE="4.0226" BBK_DIFF_A="-2.78196"/>
      <bbk:Obs TIME_PERIOD="1997-11-10" OBS_VALUE="6.80456" BBK_DIFF_A="-3.71766"/>
      <bbk:Obs TIME_PERIOD="1997-11-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-11-08" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-11-07" OBS_VALUE="10.52222" BBK_DIFF_A="-0.86932"/>
      <bbk:Obs TIME_PERIOD="1997-11-06" OBS_VALUE="11.39154" BBK_DIFF_A="4.17971"/>
      <bbk:Obs TIME_PERIOD="1997-11-05" OBS_VALUE="7.21183" BBK_DIFF_A="4.11644"/>
      <bbk:Obs TIME_PERIOD="1997-11-04" OBS_VALUE="3.09539" BBK_DIFF_A="0.021"/>
      <bbk:Obs TIME_PERIOD="1997-11-03" OBS_VALUE="3.07439" BBK_DIFF_A="-0.57892"/>
      <bbk:Obs TIME_PERIOD="1997-11-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-11-01" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-10-31" OBS_VALUE="3.65331" BBK_DIFF_A="1.2069"/>
      <bbk:Obs TIME_PERIOD="1997-10-30" OBS_VALUE="2.44641" BBK_DIFF_A="-3.2785"/>
      <bbk:Obs TIME_PERIOD="1997-10-29" OBS_VALUE="5.72491" BBK_DIFF_A="-0.98998"/>
      <bbk:Obs TIME_PERIOD="1997-10-28" OBS_VALUE="6.71489" BBK_DIFF_A="4.37665"/>
      <bbk:Obs TIME_PERIOD="1997-10-27" OBS_VALUE="2.33824" BBK_DIFF_A="-0.19327"/>
      <bbk:Obs TIME_PERIOD="1997-10-26" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-10-25" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-10-24" OBS_VALUE="2.53151" BBK_DIFF_A="-0.13493"/>
      <bbk:Obs TIME_PERIOD="1997-10-23" OBS_VALUE="2.66644" BBK_DIFF_A="-0.2151"/>
      <bbk:Obs TIME_PERIOD="1997-10-22" OBS_VALUE="2.88154" BBK_DIFF_A="0.42808"/>
      <bbk:Obs TIME_PERIOD="1997-10-21" OBS_VALUE="2.45346" BBK_DIFF_A="-0.06812"/>
      <bbk:Obs TIME_PERIOD="1997-10-20" OBS_VALUE="2.52158" BBK_DIFF_A="0.49269"/>
      <bbk:Obs TIME_PERIOD="1997-10-19" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-10-18" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-10-17" OBS_VALUE="2.02889" BBK_DIFF_A="-0.33966"/>
      <bbk:Obs TIME_PERIOD="1997-10-16" OBS_VALUE="2.36855" BBK_DIFF_A="0.20684"/>
      <bbk:Obs TIME_PERIOD="1997-10-15" OBS_VALUE="2.16171" BBK_DIFF_A="-1.24792"/>
      <bbk:Obs TIME_PERIOD="1997-10-14" OBS_VALUE="3.40963" BBK_DIFF_A="1.84203"/>
      <bbk:Obs TIME_PERIOD="1997-10-13" OBS_VALUE="1.5676" BBK_DIFF_A="-0.73757"/>
      <bbk:Obs TIME_PERIOD="1997-10-12" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-10-11" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-10-10" OBS_VALUE="2.30517" BBK_DIFF_A="-0.2369"/>
      <bbk:Obs TIME_PERIOD="1997-10-09" OBS_VALUE="2.54207" BBK_DIFF_A="-0.17418"/>
      <bbk:Obs TIME_PERIOD="1997-10-08" OBS_VALUE="2.71625" BBK_DIFF_A="0.53413"/>
      <bbk:Obs TIME_PERIOD="1997-10-07" OBS_VALUE="2.18212" BBK_DIFF_A="-1.43897"/>
      <bbk:Obs TIME_PERIOD="1997-10-06" OBS_VALUE="3.62109" BBK_DIFF_A="1.38333"/>
      <bbk:Obs TIME_PERIOD="1997-10-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-10-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-10-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-10-02" OBS_VALUE="2.23776" BBK_DIFF_A="-1.2851"/>
      <bbk:Obs TIME_PERIOD="1997-10-01" OBS_VALUE="3.52286" BBK_DIFF_A="0.69683"/>
      <bbk:Obs TIME_PERIOD="1997-09-30" OBS_VALUE="2.82603" BBK_DIFF_A="-12.52175"/>
      <bbk:Obs TIME_PERIOD="1997-09-29" OBS_VALUE="15.34778" BBK_DIFF_A="15.34768"/>
      <bbk:Obs TIME_PERIOD="1997-09-28" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-09-27" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-09-26" OBS_VALUE="1.0E-4" BBK_DIFF_A="-2.23026"/>
      <bbk:Obs TIME_PERIOD="1997-09-25" OBS_VALUE="2.23036" BBK_DIFF_A="0.15762"/>
      <bbk:Obs TIME_PERIOD="1997-09-24" OBS_VALUE="2.07274" BBK_DIFF_A="0.82535"/>
      <bbk:Obs TIME_PERIOD="1997-09-23" OBS_VALUE="1.24739" BBK_DIFF_A="-0.83698"/>
      <bbk:Obs TIME_PERIOD="1997-09-22" OBS_VALUE="2.08437" BBK_DIFF_A="2.08427"/>
      <bbk:Obs TIME_PERIOD="1997-09-21" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-09-20" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-09-19" OBS_VALUE="1.0E-4" BBK_DIFF_A="-2.24231"/>
      <bbk:Obs TIME_PERIOD="1997-09-18" OBS_VALUE="2.24241" BBK_DIFF_A="2.22736"/>
      <bbk:Obs TIME_PERIOD="1997-09-17" OBS_VALUE="0.01505" BBK_DIFF_A="-0.54376"/>
      <bbk:Obs TIME_PERIOD="1997-09-16" OBS_VALUE="0.55881" BBK_DIFF_A="-4.54631"/>
      <bbk:Obs TIME_PERIOD="1997-09-15" OBS_VALUE="5.10512" BBK_DIFF_A="3.28992"/>
      <bbk:Obs TIME_PERIOD="1997-09-14" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-09-13" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-09-12" OBS_VALUE="1.8152" BBK_DIFF_A="-0.13697"/>
      <bbk:Obs TIME_PERIOD="1997-09-11" OBS_VALUE="1.95217" BBK_DIFF_A="0.12129"/>
      <bbk:Obs TIME_PERIOD="1997-09-10" OBS_VALUE="1.83088" BBK_DIFF_A="0.0845"/>
      <bbk:Obs TIME_PERIOD="1997-09-09" OBS_VALUE="1.74638" BBK_DIFF_A="-8.39297"/>
      <bbk:Obs TIME_PERIOD="1997-09-08" OBS_VALUE="10.13935" BBK_DIFF_A="5.80609"/>
      <bbk:Obs TIME_PERIOD="1997-09-07" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-09-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-09-05" OBS_VALUE="4.33326" BBK_DIFF_A="-6.35435"/>
      <bbk:Obs TIME_PERIOD="1997-09-04" OBS_VALUE="10.68761" BBK_DIFF_A="10.28891"/>
      <bbk:Obs TIME_PERIOD="1997-09-03" OBS_VALUE="0.3987" BBK_DIFF_A="-2.35823"/>
      <bbk:Obs TIME_PERIOD="1997-09-02" OBS_VALUE="2.75693" BBK_DIFF_A="1.92197"/>
      <bbk:Obs TIME_PERIOD="1997-09-01" OBS_VALUE="0.83496" BBK_DIFF_A="-1.23842"/>
      <bbk:Obs TIME_PERIOD="1997-08-31" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-08-30" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-08-29" OBS_VALUE="2.07338" BBK_DIFF_A="-5.41477"/>
      <bbk:Obs TIME_PERIOD="1997-08-28" OBS_VALUE="7.48815" BBK_DIFF_A="1.51037"/>
      <bbk:Obs TIME_PERIOD="1997-08-27" OBS_VALUE="5.97778" BBK_DIFF_A="1.31448"/>
      <bbk:Obs TIME_PERIOD="1997-08-26" OBS_VALUE="4.6633" BBK_DIFF_A="-0.41389"/>
      <bbk:Obs TIME_PERIOD="1997-08-25" OBS_VALUE="5.07719" BBK_DIFF_A="0.85004"/>
      <bbk:Obs TIME_PERIOD="1997-08-24" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-08-23" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-08-22" OBS_VALUE="4.22715" BBK_DIFF_A="-1.62049"/>
      <bbk:Obs TIME_PERIOD="1997-08-21" OBS_VALUE="5.84764" BBK_DIFF_A="2.49957"/>
      <bbk:Obs TIME_PERIOD="1997-08-20" OBS_VALUE="3.34807" BBK_DIFF_A="1.4647"/>
      <bbk:Obs TIME_PERIOD="1997-08-19" OBS_VALUE="1.88337" BBK_DIFF_A="0.23835"/>
      <bbk:Obs TIME_PERIOD="1997-08-18" OBS_VALUE="1.64502" BBK_DIFF_A="-3.88611"/>
      <bbk:Obs TIME_PERIOD="1997-08-17" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-08-16" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-08-15" OBS_VALUE="5.53113" BBK_DIFF_A="0.29014"/>
      <bbk:Obs TIME_PERIOD="1997-08-14" OBS_VALUE="5.24099" BBK_DIFF_A="3.48914"/>
      <bbk:Obs TIME_PERIOD="1997-08-13" OBS_VALUE="1.75185" BBK_DIFF_A="0.23639"/>
      <bbk:Obs TIME_PERIOD="1997-08-12" OBS_VALUE="1.51546" BBK_DIFF_A="-0.05673"/>
      <bbk:Obs TIME_PERIOD="1997-08-11" OBS_VALUE="1.57219" BBK_DIFF_A="0.34519"/>
      <bbk:Obs TIME_PERIOD="1997-08-10" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-08-09" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-08-08" OBS_VALUE="1.227" BBK_DIFF_A="-0.321"/>
      <bbk:Obs TIME_PERIOD="1997-08-07" OBS_VALUE="1.548" BBK_DIFF_A="-1.43265"/>
      <bbk:Obs TIME_PERIOD="1997-08-06" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-08-05" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-08-04" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-08-03" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-08-02" BBK_OBS_STATUS="K"/>
      <bbk:Obs TIME_PERIOD="1997-08-01" BBK_OBS_STATUS="K"/>
    </bbk:Series>
  </bbk:DataSet>
</CompactData>
