<?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>BBFBOPV_M_N_DE_W1_S1_S1_T_C_G1___ERG__Z__Z__Z_EUR__T__X_N_ALL</ID>
    <Test>false</Test>
    <Truncated>false</Truncated>
    <Prepared>2026-05-01T11:59:57</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_ES_BOP">
    <bbk:Series FREQ="M" BBK_ID="BBFBOPV.M.N.DE.W1.S1.S1.T.C.G1___ERG._Z._Z._Z.EUR._T._X.N.ALL" DECIMALS="3" UNIT="Euro" UNIT_MULT="6" BBK_TITLE="Leistungsbilanz / Warenhandel / Ergänzungen zum Außenhandel / Einnahmen / Alle Länder" BBK_TITLE_ENG="Current account / Goods / Supplementary trade items / Credit / Rest of the world">
      <bbk:Obs TIME_PERIOD="2026-02" OBS_VALUE="-20848.048" BBK_DIFF="-3.0" BBK_DIFF_Y="-10.3"/>
      <bbk:Obs TIME_PERIOD="2026-01" OBS_VALUE="-20249.074" BBK_DIFF="5.1" BBK_DIFF_Y="-8.5"/>
      <bbk:Obs TIME_PERIOD="2025-12" OBS_VALUE="-21340.33" BBK_DIFF="6.1" BBK_DIFF_Y="-8.8"/>
      <bbk:Obs TIME_PERIOD="2025-11" OBS_VALUE="-22735.764" BBK_DIFF="1.0" BBK_DIFF_Y="-0.1"/>
      <bbk:Obs TIME_PERIOD="2025-10" OBS_VALUE="-22967.659" BBK_DIFF="-0.1" BBK_DIFF_Y="-15.1"/>
      <bbk:Obs TIME_PERIOD="2025-09" OBS_VALUE="-22933.73" BBK_DIFF="-21.7" BBK_DIFF_Y="-21.1"/>
      <bbk:Obs TIME_PERIOD="2025-08" OBS_VALUE="-18840.104" BBK_DIFF="13.3" BBK_DIFF_Y="-3.9"/>
      <bbk:Obs TIME_PERIOD="2025-07" OBS_VALUE="-21729.536" BBK_DIFF="-2.4" BBK_DIFF_Y="-7.3"/>
      <bbk:Obs TIME_PERIOD="2025-06" OBS_VALUE="-21223.394" BBK_DIFF="5.6" BBK_DIFF_Y="-11.9"/>
      <bbk:Obs TIME_PERIOD="2025-05" OBS_VALUE="-22484.92" BBK_DIFF="-5.2" BBK_DIFF_Y="-25.6"/>
      <bbk:Obs TIME_PERIOD="2025-04" OBS_VALUE="-21375.619" BBK_DIFF="5.2" BBK_DIFF_Y="-6.3"/>
      <bbk:Obs TIME_PERIOD="2025-03" OBS_VALUE="-22548.178" BBK_DIFF="-19.3" BBK_DIFF_Y="-11.4"/>
      <bbk:Obs TIME_PERIOD="2025-02" OBS_VALUE="-18895.835" BBK_DIFF="-1.3" BBK_DIFF_Y="1.6"/>
      <bbk:Obs TIME_PERIOD="2025-01" OBS_VALUE="-18657.773" BBK_DIFF="4.9" BBK_DIFF_Y="-2.3"/>
      <bbk:Obs TIME_PERIOD="2024-12" OBS_VALUE="-19614.372" BBK_DIFF="13.6" BBK_DIFF_Y="-15.0"/>
      <bbk:Obs TIME_PERIOD="2024-11" OBS_VALUE="-22706.484" BBK_DIFF="-13.8" BBK_DIFF_Y="-7.1"/>
      <bbk:Obs TIME_PERIOD="2024-10" OBS_VALUE="-19960.886" BBK_DIFF="-5.4" BBK_DIFF_Y="-8.4"/>
      <bbk:Obs TIME_PERIOD="2024-09" OBS_VALUE="-18935.196" BBK_DIFF="-4.4" BBK_DIFF_Y="-5.7"/>
      <bbk:Obs TIME_PERIOD="2024-08" OBS_VALUE="-18132.552" BBK_DIFF="10.4" BBK_DIFF_Y="-5.6"/>
      <bbk:Obs TIME_PERIOD="2024-07" OBS_VALUE="-20246.985" BBK_DIFF="-6.8" BBK_DIFF_Y="-10.8"/>
      <bbk:Obs TIME_PERIOD="2024-06" OBS_VALUE="-18965.61" BBK_DIFF="-5.9" BBK_DIFF_Y="1.5"/>
      <bbk:Obs TIME_PERIOD="2024-05" OBS_VALUE="-17907.15" BBK_DIFF="10.9" BBK_DIFF_Y="3.8"/>
      <bbk:Obs TIME_PERIOD="2024-04" OBS_VALUE="-20103.301" BBK_DIFF="0.7" BBK_DIFF_Y="-24.5"/>
      <bbk:Obs TIME_PERIOD="2024-03" OBS_VALUE="-20234.889" BBK_DIFF="-5.4" BBK_DIFF_Y="5.1"/>
      <bbk:Obs TIME_PERIOD="2024-02" OBS_VALUE="-19200.158" BBK_DIFF="-5.3" BBK_DIFF_Y="-0.6"/>
      <bbk:Obs TIME_PERIOD="2024-01" OBS_VALUE="-18231.801" BBK_DIFF="-6.9" BBK_DIFF_Y="1.0"/>
      <bbk:Obs TIME_PERIOD="2023-12" OBS_VALUE="-17049.349" BBK_DIFF="19.6" BBK_DIFF_Y="5.6"/>
      <bbk:Obs TIME_PERIOD="2023-11" OBS_VALUE="-21194.192" BBK_DIFF="-15.1" BBK_DIFF_Y="-0.9"/>
      <bbk:Obs TIME_PERIOD="2023-10" OBS_VALUE="-18406.839" BBK_DIFF="-2.7" BBK_DIFF_Y="11.7"/>
      <bbk:Obs TIME_PERIOD="2023-09" OBS_VALUE="-17915.666" BBK_DIFF="-4.3" BBK_DIFF_Y="21.0"/>
      <bbk:Obs TIME_PERIOD="2023-08" OBS_VALUE="-17176.585" BBK_DIFF="6.0" BBK_DIFF_Y="8.3"/>
      <bbk:Obs TIME_PERIOD="2023-07" OBS_VALUE="-18277.12" BBK_DIFF="5.1" BBK_DIFF_Y="2.4"/>
      <bbk:Obs TIME_PERIOD="2023-06" OBS_VALUE="-19262.219" BBK_DIFF="-3.5" BBK_DIFF_Y="3.1"/>
      <bbk:Obs TIME_PERIOD="2023-05" OBS_VALUE="-18605.471" BBK_DIFF="-15.2" BBK_DIFF_Y="14.7"/>
      <bbk:Obs TIME_PERIOD="2023-04" OBS_VALUE="-16148.607" BBK_DIFF="24.3" BBK_DIFF_Y="17.1"/>
      <bbk:Obs TIME_PERIOD="2023-03" OBS_VALUE="-21332.316" BBK_DIFF="-11.8" BBK_DIFF_Y="-1.1"/>
      <bbk:Obs TIME_PERIOD="2023-02" OBS_VALUE="-19077.506" BBK_DIFF="-3.6" BBK_DIFF_Y="-8.5"/>
      <bbk:Obs TIME_PERIOD="2023-01" OBS_VALUE="-18419.031" BBK_DIFF="-2.0" BBK_DIFF_Y="-9.8"/>
      <bbk:Obs TIME_PERIOD="2022-12" OBS_VALUE="-18065.969" BBK_DIFF="14.0" BBK_DIFF_Y="-17.2"/>
      <bbk:Obs TIME_PERIOD="2022-11" OBS_VALUE="-20996.556" BBK_DIFF="-0.7" BBK_DIFF_Y="-33.0"/>
      <bbk:Obs TIME_PERIOD="2022-10" OBS_VALUE="-20850.964" BBK_DIFF="8.0" BBK_DIFF_Y="-32.1"/>
      <bbk:Obs TIME_PERIOD="2022-09" OBS_VALUE="-22667.595" BBK_DIFF="-21.0" BBK_DIFF_Y="-41.6"/>
      <bbk:Obs TIME_PERIOD="2022-08" OBS_VALUE="-18734.784" BBK_DIFF="-0.1" BBK_DIFF_Y="-24.9"/>
      <bbk:Obs TIME_PERIOD="2022-07" OBS_VALUE="-18721.556" BBK_DIFF="5.8" BBK_DIFF_Y="-17.8"/>
      <bbk:Obs TIME_PERIOD="2022-06" OBS_VALUE="-19880.072" BBK_DIFF="8.8" BBK_DIFF_Y="-20.3"/>
      <bbk:Obs TIME_PERIOD="2022-05" OBS_VALUE="-21807.426" BBK_DIFF="-12.0" BBK_DIFF_Y="-47.0"/>
      <bbk:Obs TIME_PERIOD="2022-04" OBS_VALUE="-19474.057" BBK_DIFF="7.7" BBK_DIFF_Y="-31.4"/>
      <bbk:Obs TIME_PERIOD="2022-03" OBS_VALUE="-21096.494" BBK_DIFF="-19.9" BBK_DIFF_Y="-31.0"/>
      <bbk:Obs TIME_PERIOD="2022-02" OBS_VALUE="-17589.52" BBK_DIFF="-4.8" BBK_DIFF_Y="-31.7"/>
      <bbk:Obs TIME_PERIOD="2022-01" OBS_VALUE="-16776.296" BBK_DIFF="-8.8" BBK_DIFF_Y="-27.3"/>
      <bbk:Obs TIME_PERIOD="2021-12" OBS_VALUE="-15421.057" BBK_DIFF="2.3" BBK_DIFF_Y="8.2"/>
      <bbk:Obs TIME_PERIOD="2021-11" OBS_VALUE="-15786.81" BBK_DIFF="0.0" BBK_DIFF_Y="3.5"/>
      <bbk:Obs TIME_PERIOD="2021-10" OBS_VALUE="-15783.494" BBK_DIFF="1.4" BBK_DIFF_Y="-1.6"/>
      <bbk:Obs TIME_PERIOD="2021-09" OBS_VALUE="-16011.558" BBK_DIFF="-6.7" BBK_DIFF_Y="-4.1"/>
      <bbk:Obs TIME_PERIOD="2021-08" OBS_VALUE="-15000.115" BBK_DIFF="5.6" BBK_DIFF_Y="-16.0"/>
      <bbk:Obs TIME_PERIOD="2021-07" OBS_VALUE="-15889.952" BBK_DIFF="3.8" BBK_DIFF_Y="-2.1"/>
      <bbk:Obs TIME_PERIOD="2021-06" OBS_VALUE="-16519.924" BBK_DIFF="-11.4" BBK_DIFF_Y="-15.6"/>
      <bbk:Obs TIME_PERIOD="2021-05" OBS_VALUE="-14830.129" BBK_DIFF="0.0" BBK_DIFF_Y="-27.3"/>
      <bbk:Obs TIME_PERIOD="2021-04" OBS_VALUE="-14825.447" BBK_DIFF="8.0" BBK_DIFF_Y="-12.0"/>
      <bbk:Obs TIME_PERIOD="2021-03" OBS_VALUE="-16107.987" BBK_DIFF="-20.6" BBK_DIFF_Y="-1.6"/>
      <bbk:Obs TIME_PERIOD="2021-02" OBS_VALUE="-13358.331" BBK_DIFF="-1.3" BBK_DIFF_Y="10.7"/>
      <bbk:Obs TIME_PERIOD="2021-01" OBS_VALUE="-13180.429" BBK_DIFF="21.5" BBK_DIFF_Y="7.9"/>
      <bbk:Obs TIME_PERIOD="2020-12" OBS_VALUE="-16799.594" BBK_DIFF="-2.7" BBK_DIFF_Y="-1.1"/>
      <bbk:Obs TIME_PERIOD="2020-11" OBS_VALUE="-16364.328" BBK_DIFF="-5.3" BBK_DIFF_Y="1.9"/>
      <bbk:Obs TIME_PERIOD="2020-10" OBS_VALUE="-15535.966" BBK_DIFF="-1.0" BBK_DIFF_Y="12.0"/>
      <bbk:Obs TIME_PERIOD="2020-09" OBS_VALUE="-15377.404" BBK_DIFF="-18.9" BBK_DIFF_Y="6.7"/>
      <bbk:Obs TIME_PERIOD="2020-08" OBS_VALUE="-12928.358" BBK_DIFF="17.0" BBK_DIFF_Y="8.9"/>
      <bbk:Obs TIME_PERIOD="2020-07" OBS_VALUE="-15570.514" BBK_DIFF="-8.9" BBK_DIFF_Y="9.1"/>
      <bbk:Obs TIME_PERIOD="2020-06" OBS_VALUE="-14296.121" BBK_DIFF="-22.7" BBK_DIFF_Y="8.2"/>
      <bbk:Obs TIME_PERIOD="2020-05" OBS_VALUE="-11648.035" BBK_DIFF="12.0" BBK_DIFF_Y="29.6"/>
      <bbk:Obs TIME_PERIOD="2020-04" OBS_VALUE="-13231.542" BBK_DIFF="16.6" BBK_DIFF_Y="16.4"/>
      <bbk:Obs TIME_PERIOD="2020-03" OBS_VALUE="-15861.077" BBK_DIFF="-6.1" BBK_DIFF_Y="-0.9"/>
      <bbk:Obs TIME_PERIOD="2020-02" OBS_VALUE="-14953.049" BBK_DIFF="-4.5" BBK_DIFF_Y="0.8"/>
      <bbk:Obs TIME_PERIOD="2020-01" OBS_VALUE="-14314.792" BBK_DIFF="13.8" BBK_DIFF_Y="7.5"/>
      <bbk:Obs TIME_PERIOD="2019-12" OBS_VALUE="-16611.119" BBK_DIFF="0.4" BBK_DIFF_Y="-0.9"/>
      <bbk:Obs TIME_PERIOD="2019-11" OBS_VALUE="-16681.073" BBK_DIFF="5.5" BBK_DIFF_Y="8.0"/>
      <bbk:Obs TIME_PERIOD="2019-10" OBS_VALUE="-17659.088" BBK_DIFF="-7.2" BBK_DIFF_Y="-9.4"/>
      <bbk:Obs TIME_PERIOD="2019-09" OBS_VALUE="-16479.502" BBK_DIFF="-16.1" BBK_DIFF_Y="-3.7"/>
      <bbk:Obs TIME_PERIOD="2019-08" OBS_VALUE="-14195.13" BBK_DIFF="17.2" BBK_DIFF_Y="4.0"/>
      <bbk:Obs TIME_PERIOD="2019-07" OBS_VALUE="-17134.607" BBK_DIFF="-10.0" BBK_DIFF_Y="-11.5"/>
      <bbk:Obs TIME_PERIOD="2019-06" OBS_VALUE="-15575.576" BBK_DIFF="5.8" BBK_DIFF_Y="6.3"/>
      <bbk:Obs TIME_PERIOD="2019-05" OBS_VALUE="-16536.716" BBK_DIFF="-4.5" BBK_DIFF_Y="-11.8"/>
      <bbk:Obs TIME_PERIOD="2019-04" OBS_VALUE="-15832.099" BBK_DIFF="-0.7" BBK_DIFF_Y="-3.0"/>
      <bbk:Obs TIME_PERIOD="2019-03" OBS_VALUE="-15725.036" BBK_DIFF="-4.4" BBK_DIFF_Y="-9.3"/>
      <bbk:Obs TIME_PERIOD="2019-02" OBS_VALUE="-15067.878" BBK_DIFF="2.6" BBK_DIFF_Y="-7.4"/>
      <bbk:Obs TIME_PERIOD="2019-01" OBS_VALUE="-15467.65" BBK_DIFF="6.0" BBK_DIFF_Y="-7.9"/>
      <bbk:Obs TIME_PERIOD="2018-12" OBS_VALUE="-16454.858" BBK_DIFF="9.3" BBK_DIFF_Y="3.5"/>
      <bbk:Obs TIME_PERIOD="2018-11" OBS_VALUE="-18139.335" BBK_DIFF="-12.3" BBK_DIFF_Y="-3.5"/>
      <bbk:Obs TIME_PERIOD="2018-10" OBS_VALUE="-16147.203" BBK_DIFF="-1.6" BBK_DIFF_Y="-2.3"/>
      <bbk:Obs TIME_PERIOD="2018-09" OBS_VALUE="-15890.531" BBK_DIFF="-7.5" BBK_DIFF_Y="-0.6"/>
      <bbk:Obs TIME_PERIOD="2018-08" OBS_VALUE="-14782.914" BBK_DIFF="3.8" BBK_DIFF_Y="6.1"/>
      <bbk:Obs TIME_PERIOD="2018-07" OBS_VALUE="-15365.337" BBK_DIFF="7.6" BBK_DIFF_Y="-2.7"/>
      <bbk:Obs TIME_PERIOD="2018-06" OBS_VALUE="-16621.45" BBK_DIFF="-12.4" BBK_DIFF_Y="-8.9"/>
      <bbk:Obs TIME_PERIOD="2018-05" OBS_VALUE="-14788.427" BBK_DIFF="3.8" BBK_DIFF_Y="11.7"/>
      <bbk:Obs TIME_PERIOD="2018-04" OBS_VALUE="-15368.518" BBK_DIFF="-6.8" BBK_DIFF_Y="-4.8"/>
      <bbk:Obs TIME_PERIOD="2018-03" OBS_VALUE="-14387.118" BBK_DIFF="-2.5" BBK_DIFF_Y="17.2"/>
      <bbk:Obs TIME_PERIOD="2018-02" OBS_VALUE="-14030.045" BBK_DIFF="2.1" BBK_DIFF_Y="6.0"/>
      <bbk:Obs TIME_PERIOD="2018-01" OBS_VALUE="-14334.4" BBK_DIFF="15.9" BBK_DIFF_Y="-5.3"/>
      <bbk:Obs TIME_PERIOD="2017-12" OBS_VALUE="-17047.726" BBK_DIFF="2.8" BBK_DIFF_Y="3.2"/>
      <bbk:Obs TIME_PERIOD="2017-11" OBS_VALUE="-17530.486" BBK_DIFF="-11.1" BBK_DIFF_Y="-12.4"/>
      <bbk:Obs TIME_PERIOD="2017-10" OBS_VALUE="-15783.497" BBK_DIFF="0.1" BBK_DIFF_Y="-10.0"/>
      <bbk:Obs TIME_PERIOD="2017-09" OBS_VALUE="-15793.859" BBK_DIFF="-0.4" BBK_DIFF_Y="-7.7"/>
      <bbk:Obs TIME_PERIOD="2017-08" OBS_VALUE="-15736.679" BBK_DIFF="-5.2" BBK_DIFF_Y="-10.9"/>
      <bbk:Obs TIME_PERIOD="2017-07" OBS_VALUE="-14964.264" BBK_DIFF="1.9" BBK_DIFF_Y="-12.2"/>
      <bbk:Obs TIME_PERIOD="2017-06" OBS_VALUE="-15261.167" BBK_DIFF="8.9" BBK_DIFF_Y="-0.6"/>
      <bbk:Obs TIME_PERIOD="2017-05" OBS_VALUE="-16754.846" BBK_DIFF="-14.2" BBK_DIFF_Y="-18.0"/>
      <bbk:Obs TIME_PERIOD="2017-04" OBS_VALUE="-14670.937" BBK_DIFF="15.6" BBK_DIFF_Y="3.2"/>
      <bbk:Obs TIME_PERIOD="2017-03" OBS_VALUE="-17376.68" BBK_DIFF="-16.5" BBK_DIFF_Y="-11.2"/>
      <bbk:Obs TIME_PERIOD="2017-02" OBS_VALUE="-14919.24" BBK_DIFF="-9.6" BBK_DIFF_Y="-7.0"/>
      <bbk:Obs TIME_PERIOD="2017-01" OBS_VALUE="-13606.559" BBK_DIFF="22.7" BBK_DIFF_Y="-11.6"/>
      <bbk:Obs TIME_PERIOD="2016-12" OBS_VALUE="-17611.965" BBK_DIFF="-12.9" BBK_DIFF_Y="-24.0"/>
      <bbk:Obs TIME_PERIOD="2016-11" OBS_VALUE="-15595.946" BBK_DIFF="-8.7" BBK_DIFF_Y="-9.8"/>
      <bbk:Obs TIME_PERIOD="2016-10" OBS_VALUE="-14344.795" BBK_DIFF="2.2" BBK_DIFF_Y="8.4"/>
      <bbk:Obs TIME_PERIOD="2016-09" OBS_VALUE="-14666.256" BBK_DIFF="-3.3" BBK_DIFF_Y="-2.2"/>
      <bbk:Obs TIME_PERIOD="2016-08" OBS_VALUE="-14195.642" BBK_DIFF="-6.4" BBK_DIFF_Y="-19.4"/>
      <bbk:Obs TIME_PERIOD="2016-07" OBS_VALUE="-13340.737" BBK_DIFF="12.0" BBK_DIFF_Y="12.8"/>
      <bbk:Obs TIME_PERIOD="2016-06" OBS_VALUE="-15167.972" BBK_DIFF="-6.8" BBK_DIFF_Y="-6.4"/>
      <bbk:Obs TIME_PERIOD="2016-05" OBS_VALUE="-14202.744" BBK_DIFF="6.3" BBK_DIFF_Y="-8.1"/>
      <bbk:Obs TIME_PERIOD="2016-04" OBS_VALUE="-15151.866" BBK_DIFF="3.1" BBK_DIFF_Y="-4.1"/>
      <bbk:Obs TIME_PERIOD="2016-03" OBS_VALUE="-15632.624" BBK_DIFF="-12.1" BBK_DIFF_Y="-19.1"/>
      <bbk:Obs TIME_PERIOD="2016-02" OBS_VALUE="-13941.551" BBK_DIFF="-14.3" BBK_DIFF_Y="-7.6"/>
      <bbk:Obs TIME_PERIOD="2016-01" OBS_VALUE="-12195.802" BBK_DIFF="14.1" BBK_DIFF_Y="-6.8"/>
      <bbk:Obs TIME_PERIOD="2015-12" OBS_VALUE="-14199.674" BBK_DIFF="0.0" BBK_DIFF_Y="-15.6"/>
      <bbk:Obs TIME_PERIOD="2015-11" OBS_VALUE="-14200.33" BBK_DIFF="9.3" BBK_DIFF_Y="-20.1"/>
      <bbk:Obs TIME_PERIOD="2015-10" OBS_VALUE="-15656.264" BBK_DIFF="-9.1" BBK_DIFF_Y="-22.0"/>
      <bbk:Obs TIME_PERIOD="2015-09" OBS_VALUE="-14347.322" BBK_DIFF="-20.7" BBK_DIFF_Y="-12.5"/>
      <bbk:Obs TIME_PERIOD="2015-08" OBS_VALUE="-11887.053" BBK_DIFF="22.3" BBK_DIFF_Y="-12.6"/>
      <bbk:Obs TIME_PERIOD="2015-07" OBS_VALUE="-15302.9" BBK_DIFF="-7.4" BBK_DIFF_Y="-22.0"/>
      <bbk:Obs TIME_PERIOD="2015-06" OBS_VALUE="-14253.272" BBK_DIFF="-8.5" BBK_DIFF_Y="-24.2"/>
      <bbk:Obs TIME_PERIOD="2015-05" OBS_VALUE="-13140.66" BBK_DIFF="9.7" BBK_DIFF_Y="-16.7"/>
      <bbk:Obs TIME_PERIOD="2015-04" OBS_VALUE="-14549.685" BBK_DIFF="-10.8" BBK_DIFF_Y="-31.2"/>
      <bbk:Obs TIME_PERIOD="2015-03" OBS_VALUE="-13129.361" BBK_DIFF="-1.3" BBK_DIFF_Y="-17.6"/>
      <bbk:Obs TIME_PERIOD="2015-02" OBS_VALUE="-12958.649" BBK_DIFF="-13.4" BBK_DIFF_Y="-16.2"/>
      <bbk:Obs TIME_PERIOD="2015-01" OBS_VALUE="-11422.418" BBK_DIFF="7.0" BBK_DIFF_Y="-8.8"/>
      <bbk:Obs TIME_PERIOD="2014-12" OBS_VALUE="-12279.977" BBK_DIFF="-3.8" BBK_DIFF_Y="-16.5"/>
      <bbk:Obs TIME_PERIOD="2014-11" OBS_VALUE="-11825.831" BBK_DIFF="7.9" BBK_DIFF_Y="-5.1"/>
      <bbk:Obs TIME_PERIOD="2014-10" OBS_VALUE="-12834.271" BBK_DIFF="-0.7" BBK_DIFF_Y="-4.2"/>
      <bbk:Obs TIME_PERIOD="2014-09" OBS_VALUE="-12751.074" BBK_DIFF="-20.8" BBK_DIFF_Y="-13.9"/>
      <bbk:Obs TIME_PERIOD="2014-08" OBS_VALUE="-10555.848" BBK_DIFF="15.8" BBK_DIFF_Y="-12.3"/>
      <bbk:Obs TIME_PERIOD="2014-07" OBS_VALUE="-12539.108" BBK_DIFF="-9.3" BBK_DIFF_Y="-15.1"/>
      <bbk:Obs TIME_PERIOD="2014-06" OBS_VALUE="-11473.951" BBK_DIFF="-1.9" BBK_DIFF_Y="6.8"/>
      <bbk:Obs TIME_PERIOD="2014-05" OBS_VALUE="-11256.939" BBK_DIFF="-1.5" BBK_DIFF_Y="-6.5"/>
      <bbk:Obs TIME_PERIOD="2014-04" OBS_VALUE="-11091.55" BBK_DIFF="0.6" BBK_DIFF_Y="1.8"/>
      <bbk:Obs TIME_PERIOD="2014-03" OBS_VALUE="-11163.633" BBK_DIFF="-0.1" BBK_DIFF_Y="-1.2"/>
      <bbk:Obs TIME_PERIOD="2014-02" OBS_VALUE="-11153.452" BBK_DIFF="-6.2" BBK_DIFF_Y="-1.4"/>
      <bbk:Obs TIME_PERIOD="2014-01" OBS_VALUE="-10501.132" BBK_DIFF="0.4" BBK_DIFF_Y="4.2"/>
      <bbk:Obs TIME_PERIOD="2013-12" OBS_VALUE="-10539.85" BBK_DIFF="6.3" BBK_DIFF_Y="-20.0"/>
      <bbk:Obs TIME_PERIOD="2013-11" OBS_VALUE="-11250.572" BBK_DIFF="8.7" BBK_DIFF_Y="-0.9"/>
      <bbk:Obs TIME_PERIOD="2013-10" OBS_VALUE="-12320.128" BBK_DIFF="-10.0" BBK_DIFF_Y="-14.0"/>
      <bbk:Obs TIME_PERIOD="2013-09" OBS_VALUE="-11195.194" BBK_DIFF="-19.1" BBK_DIFF_Y="-9.8"/>
      <bbk:Obs TIME_PERIOD="2013-08" OBS_VALUE="-9396.477" BBK_DIFF="13.7" BBK_DIFF_Y="10.4"/>
      <bbk:Obs TIME_PERIOD="2013-07" OBS_VALUE="-10891.761" BBK_DIFF="11.5" BBK_DIFF_Y="-0.8"/>
      <bbk:Obs TIME_PERIOD="2013-06" OBS_VALUE="-12305.578" BBK_DIFF="-16.4" BBK_DIFF_Y="-14.1"/>
      <bbk:Obs TIME_PERIOD="2013-05" OBS_VALUE="-10569.65" BBK_DIFF="6.4" BBK_DIFF_Y="2.8"/>
      <bbk:Obs TIME_PERIOD="2013-04" OBS_VALUE="-11294.851" BBK_DIFF="-2.4" BBK_DIFF_Y="-13.4"/>
      <bbk:Obs TIME_PERIOD="2013-03" OBS_VALUE="-11029.321" BBK_DIFF="-0.3" BBK_DIFF_Y="-5.3"/>
      <bbk:Obs TIME_PERIOD="2013-02" OBS_VALUE="-11001.287" BBK_DIFF="-0.4" BBK_DIFF_Y="-12.1"/>
      <bbk:Obs TIME_PERIOD="2013-01" OBS_VALUE="-10957.89" BBK_DIFF="-24.7" BBK_DIFF_Y="-18.7"/>
      <bbk:Obs TIME_PERIOD="2012-12" OBS_VALUE="-8784.362" BBK_DIFF="21.3" BBK_DIFF_Y="10.6"/>
      <bbk:Obs TIME_PERIOD="2012-11" OBS_VALUE="-11154.817" BBK_DIFF="-3.2" BBK_DIFF_Y="1.6"/>
      <bbk:Obs TIME_PERIOD="2012-10" OBS_VALUE="-10806.463" BBK_DIFF="-6.0" BBK_DIFF_Y="0.3"/>
      <bbk:Obs TIME_PERIOD="2012-09" OBS_VALUE="-10197.257" BBK_DIFF="2.8" BBK_DIFF_Y="13.3"/>
      <bbk:Obs TIME_PERIOD="2012-08" OBS_VALUE="-10488.334" BBK_DIFF="2.9" BBK_DIFF_Y="-5.4"/>
      <bbk:Obs TIME_PERIOD="2012-07" OBS_VALUE="-10803.997" BBK_DIFF="-0.1" BBK_DIFF_Y="-5.6"/>
      <bbk:Obs TIME_PERIOD="2012-06" OBS_VALUE="-10788.455" BBK_DIFF="0.8" BBK_DIFF_Y="-16.4"/>
      <bbk:Obs TIME_PERIOD="2012-05" OBS_VALUE="-10871.023" BBK_DIFF="-9.1" BBK_DIFF_Y="2.1"/>
      <bbk:Obs TIME_PERIOD="2012-04" OBS_VALUE="-9961.961" BBK_DIFF="4.9" BBK_DIFF_Y="-11.6"/>
      <bbk:Obs TIME_PERIOD="2012-03" OBS_VALUE="-10474.521" BBK_DIFF="-6.7" BBK_DIFF_Y="4.1"/>
      <bbk:Obs TIME_PERIOD="2012-02" OBS_VALUE="-9816.157" BBK_DIFF="-6.4" BBK_DIFF_Y="-4.1"/>
      <bbk:Obs TIME_PERIOD="2012-01" OBS_VALUE="-9228.144" BBK_DIFF="6.0" BBK_DIFF_Y="-5.0"/>
      <bbk:Obs TIME_PERIOD="2011-12" OBS_VALUE="-9820.877" BBK_DIFF="13.4" BBK_DIFF_Y="0.0"/>
      <bbk:Obs TIME_PERIOD="2011-11" OBS_VALUE="-11337.065" BBK_DIFF="-4.6" BBK_DIFF_Y="-7.6"/>
      <bbk:Obs TIME_PERIOD="2011-10" OBS_VALUE="-10842.955" BBK_DIFF="7.8" BBK_DIFF_Y="-11.5"/>
      <bbk:Obs TIME_PERIOD="2011-09" OBS_VALUE="-11764.086" BBK_DIFF="-18.2" BBK_DIFF_Y="-27.6"/>
      <bbk:Obs TIME_PERIOD="2011-08" OBS_VALUE="-9948.572" BBK_DIFF="2.8" BBK_DIFF_Y="-18.8"/>
      <bbk:Obs TIME_PERIOD="2011-07" OBS_VALUE="-10234.365" BBK_DIFF="-10.5" BBK_DIFF_Y="-1.5"/>
      <bbk:Obs TIME_PERIOD="2011-06" OBS_VALUE="-9265.882" BBK_DIFF="16.6" BBK_DIFF_Y="7.7"/>
      <bbk:Obs TIME_PERIOD="2011-05" OBS_VALUE="-11108.202" BBK_DIFF="-24.5" BBK_DIFF_Y="-29.5"/>
      <bbk:Obs TIME_PERIOD="2011-04" OBS_VALUE="-8924.976" BBK_DIFF="18.3" BBK_DIFF_Y="-3.4"/>
      <bbk:Obs TIME_PERIOD="2011-03" OBS_VALUE="-10917.782" BBK_DIFF="-15.7" BBK_DIFF_Y="-10.1"/>
      <bbk:Obs TIME_PERIOD="2011-02" OBS_VALUE="-9433.315" BBK_DIFF="-7.4" BBK_DIFF_Y="-8.4"/>
      <bbk:Obs TIME_PERIOD="2011-01" OBS_VALUE="-8786.305" BBK_DIFF="10.5" BBK_DIFF_Y="-16.2"/>
      <bbk:Obs TIME_PERIOD="2010-12" OBS_VALUE="-9818.541" BBK_DIFF="6.8" BBK_DIFF_Y="-33.4"/>
      <bbk:Obs TIME_PERIOD="2010-11" OBS_VALUE="-10539.29" BBK_DIFF="-8.4" BBK_DIFF_Y="-36.5"/>
      <bbk:Obs TIME_PERIOD="2010-10" OBS_VALUE="-9725.28" BBK_DIFF="-5.5" BBK_DIFF_Y="-10.0"/>
      <bbk:Obs TIME_PERIOD="2010-09" OBS_VALUE="-9218.237" BBK_DIFF="-10.1" BBK_DIFF_Y="-15.7"/>
      <bbk:Obs TIME_PERIOD="2010-08" OBS_VALUE="-8373.56" BBK_DIFF="17.0" BBK_DIFF_Y="-14.7"/>
      <bbk:Obs TIME_PERIOD="2010-07" OBS_VALUE="-10083.937" BBK_DIFF="-0.5" BBK_DIFF_Y="-27.6"/>
      <bbk:Obs TIME_PERIOD="2010-06" OBS_VALUE="-10034.18" BBK_DIFF="-17.0" BBK_DIFF_Y="-25.0"/>
      <bbk:Obs TIME_PERIOD="2010-05" OBS_VALUE="-8579.828" BBK_DIFF="0.6" BBK_DIFF_Y="-18.4"/>
      <bbk:Obs TIME_PERIOD="2010-04" OBS_VALUE="-8631.4" BBK_DIFF="13.0" BBK_DIFF_Y="-22.6"/>
      <bbk:Obs TIME_PERIOD="2010-03" OBS_VALUE="-9920.265" BBK_DIFF="-14.0" BBK_DIFF_Y="-13.2"/>
      <bbk:Obs TIME_PERIOD="2010-02" OBS_VALUE="-8703.875" BBK_DIFF="-15.1" BBK_DIFF_Y="-33.7"/>
      <bbk:Obs TIME_PERIOD="2010-01" OBS_VALUE="-7562.618" BBK_DIFF="-2.8" BBK_DIFF_Y="-22.1"/>
      <bbk:Obs TIME_PERIOD="2009-12" OBS_VALUE="-7359.522" BBK_DIFF="4.7" BBK_DIFF_Y="3.6"/>
      <bbk:Obs TIME_PERIOD="2009-11" OBS_VALUE="-7722.403" BBK_DIFF="12.7" BBK_DIFF_Y="7.3"/>
      <bbk:Obs TIME_PERIOD="2009-10" OBS_VALUE="-8842.428" BBK_DIFF="-11.0" BBK_DIFF_Y="-0.3"/>
      <bbk:Obs TIME_PERIOD="2009-09" OBS_VALUE="-7965.338" BBK_DIFF="-9.1" BBK_DIFF_Y="5.7"/>
      <bbk:Obs TIME_PERIOD="2009-08" OBS_VALUE="-7299.48" BBK_DIFF="7.6" BBK_DIFF_Y="-1.4"/>
      <bbk:Obs TIME_PERIOD="2009-07" OBS_VALUE="-7901.668" BBK_DIFF="1.5" BBK_DIFF_Y="7.2"/>
      <bbk:Obs TIME_PERIOD="2009-06" OBS_VALUE="-8025.329" BBK_DIFF="-10.7" BBK_DIFF_Y="3.5"/>
      <bbk:Obs TIME_PERIOD="2009-05" OBS_VALUE="-7247.827" BBK_DIFF="-3.0" BBK_DIFF_Y="5.8"/>
      <bbk:Obs TIME_PERIOD="2009-04" OBS_VALUE="-7038.588" BBK_DIFF="19.7" BBK_DIFF_Y="23.3"/>
      <bbk:Obs TIME_PERIOD="2009-03" OBS_VALUE="-8767.351" BBK_DIFF="-34.7" BBK_DIFF_Y="-6.5"/>
      <bbk:Obs TIME_PERIOD="2009-02" OBS_VALUE="-6507.935" BBK_DIFF="-5.1" BBK_DIFF_Y="25.4"/>
      <bbk:Obs TIME_PERIOD="2009-01" OBS_VALUE="-6194.123" BBK_DIFF="18.9" BBK_DIFF_Y="27.8"/>
      <bbk:Obs TIME_PERIOD="2008-12" OBS_VALUE="-7634.602" BBK_DIFF="8.4" BBK_DIFF_Y="-7.7"/>
      <bbk:Obs TIME_PERIOD="2008-11" OBS_VALUE="-8333.26" BBK_DIFF="5.5" BBK_DIFF_Y="3.7"/>
      <bbk:Obs TIME_PERIOD="2008-10" OBS_VALUE="-8815.444" BBK_DIFF="-4.3" BBK_DIFF_Y="3.2"/>
      <bbk:Obs TIME_PERIOD="2008-09" OBS_VALUE="-8449.628" BBK_DIFF="-17.4" BBK_DIFF_Y="-14.2"/>
      <bbk:Obs TIME_PERIOD="2008-08" OBS_VALUE="-7196.525" BBK_DIFF="15.4" BBK_DIFF_Y="2.4"/>
      <bbk:Obs TIME_PERIOD="2008-07" OBS_VALUE="-8510.154" BBK_DIFF="-2.4" BBK_DIFF_Y="-6.7"/>
      <bbk:Obs TIME_PERIOD="2008-06" OBS_VALUE="-8313.24" BBK_DIFF="-8.1" BBK_DIFF_Y="-5.0"/>
      <bbk:Obs TIME_PERIOD="2008-05" OBS_VALUE="-7691.993" BBK_DIFF="16.2" BBK_DIFF_Y="1.0"/>
      <bbk:Obs TIME_PERIOD="2008-04" OBS_VALUE="-9180.805" BBK_DIFF="-11.6" BBK_DIFF_Y="-22.1"/>
      <bbk:Obs TIME_PERIOD="2008-03" OBS_VALUE="-8229.135" BBK_DIFF="5.7" BBK_DIFF_Y="0.8"/>
      <bbk:Obs TIME_PERIOD="2008-02" OBS_VALUE="-8724.183" BBK_DIFF="-1.7" BBK_DIFF_Y="-13.0"/>
      <bbk:Obs TIME_PERIOD="2008-01" OBS_VALUE="-8580.665" BBK_DIFF="-21.1" BBK_DIFF_Y="-12.5"/>
      <bbk:Obs TIME_PERIOD="2007-12" OBS_VALUE="-7087.171" BBK_DIFF="18.1" BBK_DIFF_Y="18.7"/>
      <bbk:Obs TIME_PERIOD="2007-11" OBS_VALUE="-8650.332" BBK_DIFF="5.0" BBK_DIFF_Y="13.5"/>
      <bbk:Obs TIME_PERIOD="2007-10" OBS_VALUE="-9109.526" BBK_DIFF="-23.1" BBK_DIFF_Y="1.6"/>
      <bbk:Obs TIME_PERIOD="2007-09" OBS_VALUE="-7400.48" BBK_DIFF="-0.3" BBK_DIFF_Y="13.7"/>
      <bbk:Obs TIME_PERIOD="2007-08" OBS_VALUE="-7376.009" BBK_DIFF="7.5" BBK_DIFF_Y="4.2"/>
      <bbk:Obs TIME_PERIOD="2007-07" OBS_VALUE="-7977.814" BBK_DIFF="-0.7" BBK_DIFF_Y="3.8"/>
      <bbk:Obs TIME_PERIOD="2007-06" OBS_VALUE="-7919.689" BBK_DIFF="-1.9" BBK_DIFF_Y="0.0"/>
      <bbk:Obs TIME_PERIOD="2007-05" OBS_VALUE="-7768.24" BBK_DIFF="-3.4" BBK_DIFF_Y="3.1"/>
      <bbk:Obs TIME_PERIOD="2007-04" OBS_VALUE="-7516.219" BBK_DIFF="9.4" BBK_DIFF_Y="-0.5"/>
      <bbk:Obs TIME_PERIOD="2007-03" OBS_VALUE="-8297.024" BBK_DIFF="-7.5" BBK_DIFF_Y="8.2"/>
      <bbk:Obs TIME_PERIOD="2007-02" OBS_VALUE="-7718.034" BBK_DIFF="-1.2" BBK_DIFF_Y="-1.0"/>
      <bbk:Obs TIME_PERIOD="2007-01" OBS_VALUE="-7628.333" BBK_DIFF="12.5" BBK_DIFF_Y="-6.5"/>
      <bbk:Obs TIME_PERIOD="2006-12" OBS_VALUE="-8715.374" BBK_DIFF="12.9" BBK_DIFF_Y="-25.0"/>
      <bbk:Obs TIME_PERIOD="2006-11" OBS_VALUE="-10004.784" BBK_DIFF="-8.1" BBK_DIFF_Y="-36.9"/>
      <bbk:Obs TIME_PERIOD="2006-10" OBS_VALUE="-9256.736" BBK_DIFF="-8.0" BBK_DIFF_Y="-22.1"/>
      <bbk:Obs TIME_PERIOD="2006-09" OBS_VALUE="-8574.796" BBK_DIFF="-11.4" BBK_DIFF_Y="-13.4"/>
      <bbk:Obs TIME_PERIOD="2006-08" OBS_VALUE="-7697.67" BBK_DIFF="7.2" BBK_DIFF_Y="-6.9"/>
      <bbk:Obs TIME_PERIOD="2006-07" OBS_VALUE="-8293.877" BBK_DIFF="-4.7" BBK_DIFF_Y="-27.8"/>
      <bbk:Obs TIME_PERIOD="2006-06" OBS_VALUE="-7920.611" BBK_DIFF="1.2" BBK_DIFF_Y="-5.3"/>
      <bbk:Obs TIME_PERIOD="2006-05" OBS_VALUE="-8019.375" BBK_DIFF="-7.2" BBK_DIFF_Y="-18.1"/>
      <bbk:Obs TIME_PERIOD="2006-04" OBS_VALUE="-7479.135" BBK_DIFF="17.2" BBK_DIFF_Y="-5.6"/>
      <bbk:Obs TIME_PERIOD="2006-03" OBS_VALUE="-9034.022" BBK_DIFF="-18.3" BBK_DIFF_Y="-21.5"/>
      <bbk:Obs TIME_PERIOD="2006-02" OBS_VALUE="-7638.437" BBK_DIFF="-6.6" BBK_DIFF_Y="-23.1"/>
      <bbk:Obs TIME_PERIOD="2006-01" OBS_VALUE="-7162.336" BBK_DIFF="-2.7" BBK_DIFF_Y="-4.4"/>
      <bbk:Obs TIME_PERIOD="2005-12" OBS_VALUE="-6974.974" BBK_DIFF="4.6" BBK_DIFF_Y="-6.6"/>
      <bbk:Obs TIME_PERIOD="2005-11" OBS_VALUE="-7309.642" BBK_DIFF="3.6" BBK_DIFF_Y="-2.5"/>
      <bbk:Obs TIME_PERIOD="2005-10" OBS_VALUE="-7579.519" BBK_DIFF="-0.2" BBK_DIFF_Y="-12.5"/>
      <bbk:Obs TIME_PERIOD="2005-09" OBS_VALUE="-7561.497" BBK_DIFF="-5.0" BBK_DIFF_Y="-13.4"/>
      <bbk:Obs TIME_PERIOD="2005-08" OBS_VALUE="-7198.154" BBK_DIFF="-11.0" BBK_DIFF_Y="-17.7"/>
      <bbk:Obs TIME_PERIOD="2005-07" OBS_VALUE="-6487.489" BBK_DIFF="13.8" BBK_DIFF_Y="2.2"/>
      <bbk:Obs TIME_PERIOD="2005-06" OBS_VALUE="-7523.198" BBK_DIFF="-10.8" BBK_DIFF_Y="-20.7"/>
      <bbk:Obs TIME_PERIOD="2005-05" OBS_VALUE="-6789.328" BBK_DIFF="4.1" BBK_DIFF_Y="-4.4"/>
      <bbk:Obs TIME_PERIOD="2005-04" OBS_VALUE="-7083.035" BBK_DIFF="4.8" BBK_DIFF_Y="-3.0"/>
      <bbk:Obs TIME_PERIOD="2005-03" OBS_VALUE="-7437.984" BBK_DIFF="-19.9" BBK_DIFF_Y="-13.1"/>
      <bbk:Obs TIME_PERIOD="2005-02" OBS_VALUE="-6202.858" BBK_DIFF="9.6" BBK_DIFF_Y="-1.3"/>
      <bbk:Obs TIME_PERIOD="2005-01" OBS_VALUE="-6861.434" BBK_DIFF="-4.8" BBK_DIFF_Y="-11.5"/>
      <bbk:Obs TIME_PERIOD="2004-12" OBS_VALUE="-6544.096" BBK_DIFF="8.2" BBK_DIFF_Y="-15.3"/>
      <bbk:Obs TIME_PERIOD="2004-11" OBS_VALUE="-7130.005" BBK_DIFF="-5.8" BBK_DIFF_Y="-18.2"/>
      <bbk:Obs TIME_PERIOD="2004-10" OBS_VALUE="-6740.304" BBK_DIFF="-1.1" BBK_DIFF_Y="-12.6"/>
      <bbk:Obs TIME_PERIOD="2004-09" OBS_VALUE="-6668.45" BBK_DIFF="-9.0" BBK_DIFF_Y="-7.7"/>
      <bbk:Obs TIME_PERIOD="2004-08" OBS_VALUE="-6117.283" BBK_DIFF="7.8" BBK_DIFF_Y="-12.8"/>
      <bbk:Obs TIME_PERIOD="2004-07" OBS_VALUE="-6635.581" BBK_DIFF="-6.4" BBK_DIFF_Y="-9.7"/>
      <bbk:Obs TIME_PERIOD="2004-06" OBS_VALUE="-6234.247" BBK_DIFF="4.1" BBK_DIFF_Y="-10.1"/>
      <bbk:Obs TIME_PERIOD="2004-05" OBS_VALUE="-6501.592" BBK_DIFF="5.5" BBK_DIFF_Y="-4.3"/>
      <bbk:Obs TIME_PERIOD="2004-04" OBS_VALUE="-6879.816" BBK_DIFF="-4.6" BBK_DIFF_Y="-16.5"/>
      <bbk:Obs TIME_PERIOD="2004-03" OBS_VALUE="-6577.131" BBK_DIFF="-7.4" BBK_DIFF_Y="-7.1"/>
      <bbk:Obs TIME_PERIOD="2004-02" OBS_VALUE="-6121.435" BBK_DIFF="0.5" BBK_DIFF_Y="-6.4"/>
      <bbk:Obs TIME_PERIOD="2004-01" OBS_VALUE="-6153.063" BBK_DIFF="-8.5" BBK_DIFF_Y="1.4"/>
      <bbk:Obs TIME_PERIOD="2003-12" OBS_VALUE="-5673.297" BBK_DIFF="6.0" BBK_DIFF_Y="-9.7"/>
      <bbk:Obs TIME_PERIOD="2003-11" OBS_VALUE="-6034.389" BBK_DIFF="-0.8" BBK_DIFF_Y="-13.2"/>
      <bbk:Obs TIME_PERIOD="2003-10" OBS_VALUE="-5984.717" BBK_DIFF="3.4" BBK_DIFF_Y="1.6"/>
      <bbk:Obs TIME_PERIOD="2003-09" OBS_VALUE="-6194.433" BBK_DIFF="-14.2" BBK_DIFF_Y="-19.1"/>
      <bbk:Obs TIME_PERIOD="2003-08" OBS_VALUE="-5422.725" BBK_DIFF="10.3" BBK_DIFF_Y="8.8"/>
      <bbk:Obs TIME_PERIOD="2003-07" OBS_VALUE="-6048.117" BBK_DIFF="-6.9" BBK_DIFF_Y="-18.2"/>
      <bbk:Obs TIME_PERIOD="2003-06" OBS_VALUE="-5660.326" BBK_DIFF="9.2" BBK_DIFF_Y="1.9"/>
      <bbk:Obs TIME_PERIOD="2003-05" OBS_VALUE="-6233.944" BBK_DIFF="-5.6" BBK_DIFF_Y="-48.0"/>
      <bbk:Obs TIME_PERIOD="2003-04" OBS_VALUE="-5903.075" BBK_DIFF="3.8" BBK_DIFF_Y="-7.2"/>
      <bbk:Obs TIME_PERIOD="2003-03" OBS_VALUE="-6138.28" BBK_DIFF="-6.6" BBK_DIFF_Y="-14.1"/>
      <bbk:Obs TIME_PERIOD="2003-02" OBS_VALUE="-5755.624" BBK_DIFF="7.7" BBK_DIFF_Y="2.6"/>
      <bbk:Obs TIME_PERIOD="2003-01" OBS_VALUE="-6238.553" BBK_DIFF="-20.6" BBK_DIFF_Y="-13.5"/>
      <bbk:Obs TIME_PERIOD="2002-12" OBS_VALUE="-5173.947" BBK_DIFF="3.0" BBK_DIFF_Y="-8.7"/>
      <bbk:Obs TIME_PERIOD="2002-11" OBS_VALUE="-5331.543" BBK_DIFF="12.4" BBK_DIFF_Y="5.0"/>
      <bbk:Obs TIME_PERIOD="2002-10" OBS_VALUE="-6085.069" BBK_DIFF="-17.0" BBK_DIFF_Y="-9.1"/>
      <bbk:Obs TIME_PERIOD="2002-09" OBS_VALUE="-5201.523" BBK_DIFF="12.5" BBK_DIFF_Y="-8.9"/>
      <bbk:Obs TIME_PERIOD="2002-08" OBS_VALUE="-5947.481" BBK_DIFF="-16.2" BBK_DIFF_Y="-7.8"/>
      <bbk:Obs TIME_PERIOD="2002-07" OBS_VALUE="-5117.73" BBK_DIFF="11.3" BBK_DIFF_Y="4.4"/>
      <bbk:Obs TIME_PERIOD="2002-06" OBS_VALUE="-5772.811" BBK_DIFF="-37.1" BBK_DIFF_Y="-8.7"/>
      <bbk:Obs TIME_PERIOD="2002-05" OBS_VALUE="-4211.513" BBK_DIFF="23.5" BBK_DIFF_Y="18.7"/>
      <bbk:Obs TIME_PERIOD="2002-04" OBS_VALUE="-5505.6" BBK_DIFF="-2.3" BBK_DIFF_Y="-14.8"/>
      <bbk:Obs TIME_PERIOD="2002-03" OBS_VALUE="-5381.051" BBK_DIFF="9.0" BBK_DIFF_Y="-7.3"/>
      <bbk:Obs TIME_PERIOD="2002-02" OBS_VALUE="-5911.876" BBK_DIFF="-7.6" BBK_DIFF_Y="-16.7"/>
      <bbk:Obs TIME_PERIOD="2002-01" OBS_VALUE="-5494.595" BBK_DIFF="-15.4" BBK_DIFF_Y="-8.8"/>
      <bbk:Obs TIME_PERIOD="2001-12" OBS_VALUE="-4761.912" BBK_DIFF="15.1" BBK_DIFF_Y="-1.1"/>
      <bbk:Obs TIME_PERIOD="2001-11" OBS_VALUE="-5610.824" BBK_DIFF="-0.6" BBK_DIFF_Y="-9.0"/>
      <bbk:Obs TIME_PERIOD="2001-10" OBS_VALUE="-5575.26" BBK_DIFF="-16.7" BBK_DIFF_Y="1.2"/>
      <bbk:Obs TIME_PERIOD="2001-09" OBS_VALUE="-4776.926" BBK_DIFF="13.4" BBK_DIFF_Y="-9.2"/>
      <bbk:Obs TIME_PERIOD="2001-08" OBS_VALUE="-5514.887" BBK_DIFF="-3.1" BBK_DIFF_Y="-19.2"/>
      <bbk:Obs TIME_PERIOD="2001-07" OBS_VALUE="-5351.193" BBK_DIFF="-0.8" BBK_DIFF_Y="-18.4"/>
      <bbk:Obs TIME_PERIOD="2001-06" OBS_VALUE="-5309.077" BBK_DIFF="-2.5" BBK_DIFF_Y="-9.9"/>
      <bbk:Obs TIME_PERIOD="2001-05" OBS_VALUE="-5177.115" BBK_DIFF="-8.0" BBK_DIFF_Y="-9.5"/>
      <bbk:Obs TIME_PERIOD="2001-04" OBS_VALUE="-4794.525" BBK_DIFF="4.4" BBK_DIFF_Y="-6.9"/>
      <bbk:Obs TIME_PERIOD="2001-03" OBS_VALUE="-5015.626" BBK_DIFF="1.0" BBK_DIFF_Y="-2.1"/>
      <bbk:Obs TIME_PERIOD="2001-02" OBS_VALUE="-5065.258" BBK_DIFF="-0.3" BBK_DIFF_Y="-13.0"/>
      <bbk:Obs TIME_PERIOD="2001-01" OBS_VALUE="-5047.918" BBK_DIFF="-7.2" BBK_DIFF_Y="-22.2"/>
      <bbk:Obs TIME_PERIOD="2000-12" OBS_VALUE="-4708.285" BBK_DIFF="8.5" BBK_DIFF_Y="-8.6"/>
      <bbk:Obs TIME_PERIOD="2000-11" OBS_VALUE="-5147.158" BBK_DIFF="8.8" BBK_DIFF_Y="-12.7"/>
      <bbk:Obs TIME_PERIOD="2000-10" OBS_VALUE="-5643.158" BBK_DIFF="-29.0" BBK_DIFF_Y="-34.8"/>
      <bbk:Obs TIME_PERIOD="2000-09" OBS_VALUE="-4373.558" BBK_DIFF="5.5" BBK_DIFF_Y="-13.9"/>
      <bbk:Obs TIME_PERIOD="2000-08" OBS_VALUE="-4626.167" BBK_DIFF="-2.3" BBK_DIFF_Y="-34.6"/>
      <bbk:Obs TIME_PERIOD="2000-07" OBS_VALUE="-4520.211" BBK_DIFF="6.4" BBK_DIFF_Y="-15.6"/>
      <bbk:Obs TIME_PERIOD="2000-06" OBS_VALUE="-4829.615" BBK_DIFF="-2.2" BBK_DIFF_Y="-20.1"/>
      <bbk:Obs TIME_PERIOD="2000-05" OBS_VALUE="-4726.298" BBK_DIFF="-5.4" BBK_DIFF_Y="-27.0"/>
      <bbk:Obs TIME_PERIOD="2000-04" OBS_VALUE="-4484.117" BBK_DIFF="8.7" BBK_DIFF_Y="-22.7"/>
      <bbk:Obs TIME_PERIOD="2000-03" OBS_VALUE="-4913.457" BBK_DIFF="-9.6" BBK_DIFF_Y="-21.7"/>
      <bbk:Obs TIME_PERIOD="2000-02" OBS_VALUE="-4484.119" BBK_DIFF="-8.5" BBK_DIFF_Y="-40.4"/>
      <bbk:Obs TIME_PERIOD="2000-01" OBS_VALUE="-4132.142" BBK_DIFF="4.6" BBK_DIFF_Y="-17.9"/>
      <bbk:Obs TIME_PERIOD="1999-12" OBS_VALUE="-4333.484" BBK_DIFF="5.1" BBK_DIFF_Y="-7.6"/>
      <bbk:Obs TIME_PERIOD="1999-11" OBS_VALUE="-4568.161" BBK_DIFF="-9.1" BBK_DIFF_Y="-19.9"/>
      <bbk:Obs TIME_PERIOD="1999-10" OBS_VALUE="-4187.78" BBK_DIFF="-9.1" BBK_DIFF_Y="-8.1"/>
      <bbk:Obs TIME_PERIOD="1999-09" OBS_VALUE="-3840.151" BBK_DIFF="-11.7" BBK_DIFF_Y="-4.4"/>
      <bbk:Obs TIME_PERIOD="1999-08" OBS_VALUE="-3437.007" BBK_DIFF="12.1" BBK_DIFF_Y="0.8"/>
      <bbk:Obs TIME_PERIOD="1999-07" OBS_VALUE="-3909.279" BBK_DIFF="2.8" BBK_DIFF_Y="0.4"/>
      <bbk:Obs TIME_PERIOD="1999-06" OBS_VALUE="-4021.887" BBK_DIFF="-8.1" BBK_DIFF_Y="0.8"/>
      <bbk:Obs TIME_PERIOD="1999-05" OBS_VALUE="-3721.237" BBK_DIFF="-1.8" BBK_DIFF_Y="0.0"/>
      <bbk:Obs TIME_PERIOD="1999-04" OBS_VALUE="-3654.35" BBK_DIFF="9.5" BBK_DIFF_Y="-1.6"/>
      <bbk:Obs TIME_PERIOD="1999-03" OBS_VALUE="-4038.436" BBK_DIFF="-26.4" BBK_DIFF_Y="-5.2"/>
      <bbk:Obs TIME_PERIOD="1999-02" OBS_VALUE="-3194.28" BBK_DIFF="8.9" BBK_DIFF_Y="4.9"/>
      <bbk:Obs TIME_PERIOD="1999-01" OBS_VALUE="-3505.222" BBK_DIFF="13.0" BBK_DIFF_Y="-6.0"/>
      <bbk:Obs TIME_PERIOD="1998-12" OBS_VALUE="-4029.098" BBK_DIFF="-5.8" BBK_DIFF_Y="-17.2"/>
      <bbk:Obs TIME_PERIOD="1998-11" OBS_VALUE="-3809.871" BBK_DIFF="1.7" BBK_DIFF_Y="-6.2"/>
      <bbk:Obs TIME_PERIOD="1998-10" OBS_VALUE="-3875.534" BBK_DIFF="-5.3" BBK_DIFF_Y="-11.5"/>
      <bbk:Obs TIME_PERIOD="1998-09" OBS_VALUE="-3680.057" BBK_DIFF="-6.2" BBK_DIFF_Y="-16.5"/>
      <bbk:Obs TIME_PERIOD="1998-08" OBS_VALUE="-3465.851" BBK_DIFF="11.7" BBK_DIFF_Y="-13.1"/>
      <bbk:Obs TIME_PERIOD="1998-07" OBS_VALUE="-3925.888" BBK_DIFF="3.2" BBK_DIFF_Y="-15.0"/>
      <bbk:Obs TIME_PERIOD="1998-06" OBS_VALUE="-4055.189" BBK_DIFF="-9.0" BBK_DIFF_Y="-21.8"/>
      <bbk:Obs TIME_PERIOD="1998-05" OBS_VALUE="-3720.294" BBK_DIFF="-3.5" BBK_DIFF_Y="-13.9"/>
      <bbk:Obs TIME_PERIOD="1998-04" OBS_VALUE="-3595.686" BBK_DIFF="6.4" BBK_DIFF_Y="-13.2"/>
      <bbk:Obs TIME_PERIOD="1998-03" OBS_VALUE="-3839.786" BBK_DIFF="-14.3" BBK_DIFF_Y="-24.8"/>
      <bbk:Obs TIME_PERIOD="1998-02" OBS_VALUE="-3359.837" BBK_DIFF="-1.6" BBK_DIFF_Y="-16.4"/>
      <bbk:Obs TIME_PERIOD="1998-01" OBS_VALUE="-3307.938" BBK_DIFF="3.8" BBK_DIFF_Y="-6.5"/>
      <bbk:Obs TIME_PERIOD="1997-12" OBS_VALUE="-3438.377" BBK_DIFF="4.2" BBK_DIFF_Y="-16.0"/>
      <bbk:Obs TIME_PERIOD="1997-11" OBS_VALUE="-3588.331" BBK_DIFF="-3.3" BBK_DIFF_Y="-14.2"/>
      <bbk:Obs TIME_PERIOD="1997-10" OBS_VALUE="-3474.872" BBK_DIFF="-10.0" BBK_DIFF_Y="-10.3"/>
      <bbk:Obs TIME_PERIOD="1997-09" OBS_VALUE="-3159.334" BBK_DIFF="-3.1" BBK_DIFF_Y="-16.3"/>
      <bbk:Obs TIME_PERIOD="1997-08" OBS_VALUE="-3063.774" BBK_DIFF="10.3" BBK_DIFF_Y="-13.9"/>
      <bbk:Obs TIME_PERIOD="1997-07" OBS_VALUE="-3414.603" BBK_DIFF="-2.6" BBK_DIFF_Y="-12.9"/>
      <bbk:Obs TIME_PERIOD="1997-06" OBS_VALUE="-3329.512" BBK_DIFF="-2.0" BBK_DIFF_Y="-26.3"/>
      <bbk:Obs TIME_PERIOD="1997-05" OBS_VALUE="-3265.288" BBK_DIFF="-2.8" BBK_DIFF_Y="-16.3"/>
      <bbk:Obs TIME_PERIOD="1997-04" OBS_VALUE="-3175.746" BBK_DIFF="-3.2" BBK_DIFF_Y="-16.4"/>
      <bbk:Obs TIME_PERIOD="1997-03" OBS_VALUE="-3077.351" BBK_DIFF="-6.6" BBK_DIFF_Y="-12.7"/>
      <bbk:Obs TIME_PERIOD="1997-02" OBS_VALUE="-2887.119" BBK_DIFF="7.1" BBK_DIFF_Y="-2.6"/>
      <bbk:Obs TIME_PERIOD="1997-01" OBS_VALUE="-3106.633" BBK_DIFF="-4.8" BBK_DIFF_Y="-14.2"/>
      <bbk:Obs TIME_PERIOD="1996-12" OBS_VALUE="-2964.682" BBK_DIFF="5.7" BBK_DIFF_Y="-15.3"/>
      <bbk:Obs TIME_PERIOD="1996-11" OBS_VALUE="-3142.235" BBK_DIFF="0.2" BBK_DIFF_Y="-12.7"/>
      <bbk:Obs TIME_PERIOD="1996-10" OBS_VALUE="-3149.281" BBK_DIFF="-15.9" BBK_DIFF_Y="-7.8"/>
      <bbk:Obs TIME_PERIOD="1996-09" OBS_VALUE="-2717.576" BBK_DIFF="-1.0" BBK_DIFF_Y="-11.8"/>
      <bbk:Obs TIME_PERIOD="1996-08" OBS_VALUE="-2690.409" BBK_DIFF="11.0" BBK_DIFF_Y="-7.5"/>
      <bbk:Obs TIME_PERIOD="1996-07" OBS_VALUE="-3023.189" BBK_DIFF="-14.7" BBK_DIFF_Y="-23.0"/>
      <bbk:Obs TIME_PERIOD="1996-06" OBS_VALUE="-2635.933" BBK_DIFF="6.1" BBK_DIFF_Y="-1.9"/>
      <bbk:Obs TIME_PERIOD="1996-05" OBS_VALUE="-2807.033" BBK_DIFF="-2.9" BBK_DIFF_Y="-9.4"/>
      <bbk:Obs TIME_PERIOD="1996-04" OBS_VALUE="-2728.253" BBK_DIFF="0.1" BBK_DIFF_Y="-10.5"/>
      <bbk:Obs TIME_PERIOD="1996-03" OBS_VALUE="-2730.158" BBK_DIFF="3.0" BBK_DIFF_Y="-2.2"/>
      <bbk:Obs TIME_PERIOD="1996-02" OBS_VALUE="-2814.061" BBK_DIFF="-3.5" BBK_DIFF_Y="-10.6"/>
      <bbk:Obs TIME_PERIOD="1996-01" OBS_VALUE="-2719.312" BBK_DIFF="-5.8" BBK_DIFF_Y="-9.0"/>
      <bbk:Obs TIME_PERIOD="1995-12" OBS_VALUE="-2571.453" BBK_DIFF="7.8" BBK_DIFF_Y="0.0"/>
      <bbk:Obs TIME_PERIOD="1995-11" OBS_VALUE="-2788.887" BBK_DIFF="4.6" BBK_DIFF_Y="-12.6"/>
      <bbk:Obs TIME_PERIOD="1995-10" OBS_VALUE="-2922.484" BBK_DIFF="-20.2" BBK_DIFF_Y="-7.7"/>
      <bbk:Obs TIME_PERIOD="1995-09" OBS_VALUE="-2431.671" BBK_DIFF="2.9" BBK_DIFF_Y="0.2"/>
      <bbk:Obs TIME_PERIOD="1995-08" OBS_VALUE="-2503.541" BBK_DIFF="-1.9" BBK_DIFF_Y="-8.1"/>
      <bbk:Obs TIME_PERIOD="1995-07" OBS_VALUE="-2457.377" BBK_DIFF="5.0" BBK_DIFF_Y="0.5"/>
      <bbk:Obs TIME_PERIOD="1995-06" OBS_VALUE="-2587.298" BBK_DIFF="-0.9" BBK_DIFF_Y="-12.9"/>
      <bbk:Obs TIME_PERIOD="1995-05" OBS_VALUE="-2564.766" BBK_DIFF="-3.9" BBK_DIFF_Y="-5.4"/>
      <bbk:Obs TIME_PERIOD="1995-04" OBS_VALUE="-2467.92" BBK_DIFF="7.6" BBK_DIFF_Y="-9.3"/>
      <bbk:Obs TIME_PERIOD="1995-03" OBS_VALUE="-2670.823" BBK_DIFF="-5.0" BBK_DIFF_Y="-16.6"/>
      <bbk:Obs TIME_PERIOD="1995-02" OBS_VALUE="-2544.103" BBK_DIFF="-2.0" BBK_DIFF_Y="-11.8"/>
      <bbk:Obs TIME_PERIOD="1995-01" OBS_VALUE="-2493.688" BBK_DIFF="3.0" BBK_DIFF_Y="-3.6"/>
      <bbk:Obs TIME_PERIOD="1994-12" OBS_VALUE="-2571.448" BBK_DIFF="-3.8" BBK_DIFF_Y="-4.6"/>
      <bbk:Obs TIME_PERIOD="1994-11" OBS_VALUE="-2476.15" BBK_DIFF="8.7" BBK_DIFF_Y="-6.3"/>
      <bbk:Obs TIME_PERIOD="1994-10" OBS_VALUE="-2712.746" BBK_DIFF="-11.4" BBK_DIFF_Y="-8.2"/>
      <bbk:Obs TIME_PERIOD="1994-09" OBS_VALUE="-2435.953" BBK_DIFF="-5.2" BBK_DIFF_Y="-13.4"/>
      <bbk:Obs TIME_PERIOD="1994-08" OBS_VALUE="-2316.602" BBK_DIFF="6.2" BBK_DIFF_Y="-13.8"/>
      <bbk:Obs TIME_PERIOD="1994-07" OBS_VALUE="-2469.403" BBK_DIFF="-7.8" BBK_DIFF_Y="-20.4"/>
      <bbk:Obs TIME_PERIOD="1994-06" OBS_VALUE="-2291.582" BBK_DIFF="5.8" BBK_DIFF_Y="-2.8"/>
      <bbk:Obs TIME_PERIOD="1994-05" OBS_VALUE="-2432.516" BBK_DIFF="-7.7" BBK_DIFF_Y="-17.4"/>
      <bbk:Obs TIME_PERIOD="1994-04" OBS_VALUE="-2257.799" BBK_DIFF="1.4" BBK_DIFF_Y="-8.9"/>
      <bbk:Obs TIME_PERIOD="1994-03" OBS_VALUE="-2290.215" BBK_DIFF="-0.6" BBK_DIFF_Y="-21.0"/>
      <bbk:Obs TIME_PERIOD="1994-02" OBS_VALUE="-2275.582" BBK_DIFF="5.5" BBK_DIFF_Y="-19.5"/>
      <bbk:Obs TIME_PERIOD="1994-01" OBS_VALUE="-2406.887" BBK_DIFF="2.1" BBK_DIFF_Y="-29.2"/>
      <bbk:Obs TIME_PERIOD="1993-12" OBS_VALUE="-2458.805" BBK_DIFF="-5.6" BBK_DIFF_Y="-39.0"/>
      <bbk:Obs TIME_PERIOD="1993-11" OBS_VALUE="-2328.488" BBK_DIFF="7.1" BBK_DIFF_Y="-56.8"/>
      <bbk:Obs TIME_PERIOD="1993-10" OBS_VALUE="-2507.293" BBK_DIFF="-16.7" BBK_DIFF_Y="-64.7"/>
      <bbk:Obs TIME_PERIOD="1993-09" OBS_VALUE="-2148.247" BBK_DIFF="-5.5" BBK_DIFF_Y="-66.1"/>
      <bbk:Obs TIME_PERIOD="1993-08" OBS_VALUE="-2035.755" BBK_DIFF="0.7" BBK_DIFF_Y="-62.3"/>
      <bbk:Obs TIME_PERIOD="1993-07" OBS_VALUE="-2050.72" BBK_DIFF="8.0" BBK_DIFF_Y="-23.4"/>
      <bbk:Obs TIME_PERIOD="1993-06" OBS_VALUE="-2230.041" BBK_DIFF="-7.6" BBK_DIFF_Y="-60.9"/>
      <bbk:Obs TIME_PERIOD="1993-05" OBS_VALUE="-2071.805" BBK_DIFF="0.1" BBK_DIFF_Y="-69.4"/>
      <bbk:Obs TIME_PERIOD="1993-04" OBS_VALUE="-2073.347" BBK_DIFF="-9.5" BBK_DIFF_Y="-32.2"/>
      <bbk:Obs TIME_PERIOD="1993-03" OBS_VALUE="-1892.702" BBK_DIFF="0.6" BBK_DIFF_Y="-17.8"/>
      <bbk:Obs TIME_PERIOD="1993-02" OBS_VALUE="-1904.421" BBK_DIFF="-2.2" BBK_DIFF_Y="-18.5"/>
      <bbk:Obs TIME_PERIOD="1993-01" OBS_VALUE="-1863.546" BBK_DIFF="-5.4" BBK_DIFF_Y="-27.0"/>
      <bbk:Obs TIME_PERIOD="1992-12" OBS_VALUE="-1768.588" BBK_DIFF="-19.1" BBK_DIFF_Y="-66.0"/>
      <bbk:Obs TIME_PERIOD="1992-11" OBS_VALUE="-1484.534" BBK_DIFF="2.5" BBK_DIFF_Y="6.2"/>
      <bbk:Obs TIME_PERIOD="1992-10" OBS_VALUE="-1522.46" BBK_DIFF="-17.7" BBK_DIFF_Y="-3.8"/>
      <bbk:Obs TIME_PERIOD="1992-09" OBS_VALUE="-1293.507" BBK_DIFF="-3.1" BBK_DIFF_Y="-5.3"/>
      <bbk:Obs TIME_PERIOD="1992-08" OBS_VALUE="-1254.546" BBK_DIFF="24.5" BBK_DIFF_Y="8.1"/>
      <bbk:Obs TIME_PERIOD="1992-07" OBS_VALUE="-1661.548" BBK_DIFF="-19.9" BBK_DIFF_Y="-3.1"/>
      <bbk:Obs TIME_PERIOD="1992-06" OBS_VALUE="-1386.336" BBK_DIFF="-13.4" BBK_DIFF_Y="6.4"/>
      <bbk:Obs TIME_PERIOD="1992-05" OBS_VALUE="-1222.992" BBK_DIFF="22.0" BBK_DIFF_Y="30.0"/>
      <bbk:Obs TIME_PERIOD="1992-04" OBS_VALUE="-1568.069" BBK_DIFF="2.4" BBK_DIFF_Y="0.1"/>
      <bbk:Obs TIME_PERIOD="1992-03" OBS_VALUE="-1606.442" BBK_DIFF="0.1" BBK_DIFF_Y="-15.9"/>
      <bbk:Obs TIME_PERIOD="1992-02" OBS_VALUE="-1607.402" BBK_DIFF="-9.6" BBK_DIFF_Y="-5.2"/>
      <bbk:Obs TIME_PERIOD="1992-01" OBS_VALUE="-1466.832" BBK_DIFF="-37.7" BBK_DIFF_Y="9.6"/>
      <bbk:Obs TIME_PERIOD="1991-12" OBS_VALUE="-1065.388" BBK_DIFF="32.7" BBK_DIFF_Y="15.9"/>
      <bbk:Obs TIME_PERIOD="1991-11" OBS_VALUE="-1582.328" BBK_DIFF="-7.9" BBK_DIFF_Y="-2.2"/>
      <bbk:Obs TIME_PERIOD="1991-10" OBS_VALUE="-1467.026" BBK_DIFF="-19.4" BBK_DIFF_Y="3.6"/>
      <bbk:Obs TIME_PERIOD="1991-09" OBS_VALUE="-1228.564" BBK_DIFF="10.0" BBK_DIFF_Y="5.2"/>
      <bbk:Obs TIME_PERIOD="1991-08" OBS_VALUE="-1365.165" BBK_DIFF="15.3" BBK_DIFF_Y="-19.5"/>
      <bbk:Obs TIME_PERIOD="1991-07" OBS_VALUE="-1611.02" BBK_DIFF="-8.8" BBK_DIFF_Y="-30.2"/>
      <bbk:Obs TIME_PERIOD="1991-06" OBS_VALUE="-1480.805" BBK_DIFF="15.3" BBK_DIFF_Y="-18.9"/>
      <bbk:Obs TIME_PERIOD="1991-05" OBS_VALUE="-1748.072" BBK_DIFF="-11.4" BBK_DIFF_Y="-57.2"/>
      <bbk:Obs TIME_PERIOD="1991-04" OBS_VALUE="-1569.563" BBK_DIFF="-13.3" BBK_DIFF_Y="-32.5"/>
      <bbk:Obs TIME_PERIOD="1991-03" OBS_VALUE="-1385.697" BBK_DIFF="9.3" BBK_DIFF_Y="-14.7"/>
      <bbk:Obs TIME_PERIOD="1991-02" OBS_VALUE="-1528.531" BBK_DIFF="5.7" BBK_DIFF_Y="-50.3"/>
      <bbk:Obs TIME_PERIOD="1991-01" OBS_VALUE="-1621.721" BBK_DIFF="-28.0" BBK_DIFF_Y="-35.0"/>
      <bbk:Obs TIME_PERIOD="1990-12" OBS_VALUE="-1267.122" BBK_DIFF="18.1" BBK_DIFF_Y="-1.5"/>
      <bbk:Obs TIME_PERIOD="1990-11" OBS_VALUE="-1548.028" BBK_DIFF="-1.8" BBK_DIFF_Y="-47.8"/>
      <bbk:Obs TIME_PERIOD="1990-10" OBS_VALUE="-1521.287" BBK_DIFF="-17.3" BBK_DIFF_Y="-9.9"/>
      <bbk:Obs TIME_PERIOD="1990-09" OBS_VALUE="-1296.389" BBK_DIFF="-13.4" BBK_DIFF_Y="-25.0"/>
      <bbk:Obs TIME_PERIOD="1990-08" OBS_VALUE="-1142.832" BBK_DIFF="7.6" BBK_DIFF_Y="-6.3"/>
      <bbk:Obs TIME_PERIOD="1990-07" OBS_VALUE="-1237.01" BBK_DIFF="0.7" BBK_DIFF_Y="5.8"/>
      <bbk:Obs TIME_PERIOD="1990-06" OBS_VALUE="-1245.89" BBK_DIFF="-12.0" BBK_DIFF_Y="11.4"/>
      <bbk:Obs TIME_PERIOD="1990-05" OBS_VALUE="-1112.127" BBK_DIFF="6.1" BBK_DIFF_Y="5.4"/>
      <bbk:Obs TIME_PERIOD="1990-04" OBS_VALUE="-1184.229" BBK_DIFF="2.0" BBK_DIFF_Y="7.0"/>
      <bbk:Obs TIME_PERIOD="1990-03" OBS_VALUE="-1208.478" BBK_DIFF="-18.8" BBK_DIFF_Y="-1.6"/>
      <bbk:Obs TIME_PERIOD="1990-02" OBS_VALUE="-1016.958" BBK_DIFF="15.3" BBK_DIFF_Y="15.0"/>
      <bbk:Obs TIME_PERIOD="1990-01" OBS_VALUE="-1201.035" BBK_DIFF="3.8" BBK_DIFF_Y="11.6"/>
      <bbk:Obs TIME_PERIOD="1989-12" OBS_VALUE="-1248.063" BBK_DIFF="-19.1" BBK_DIFF_Y="-26.7"/>
      <bbk:Obs TIME_PERIOD="1989-11" OBS_VALUE="-1047.673" BBK_DIFF="24.3" BBK_DIFF_Y="6.4"/>
      <bbk:Obs TIME_PERIOD="1989-10" OBS_VALUE="-1383.874" BBK_DIFF="-33.4" BBK_DIFF_Y="12.9"/>
      <bbk:Obs TIME_PERIOD="1989-09" OBS_VALUE="-1037.222" BBK_DIFF="3.5" BBK_DIFF_Y="6.6"/>
      <bbk:Obs TIME_PERIOD="1989-08" OBS_VALUE="-1075.289" BBK_DIFF="18.1" BBK_DIFF_Y="-18.9"/>
      <bbk:Obs TIME_PERIOD="1989-07" OBS_VALUE="-1313.621" BBK_DIFF="6.6" BBK_DIFF_Y="-18.8"/>
      <bbk:Obs TIME_PERIOD="1989-06" OBS_VALUE="-1406.81" BBK_DIFF="-19.7" BBK_DIFF_Y="-35.0"/>
      <bbk:Obs TIME_PERIOD="1989-05" OBS_VALUE="-1175.047" BBK_DIFF="7.7" BBK_DIFF_Y="8.6"/>
      <bbk:Obs TIME_PERIOD="1989-04" OBS_VALUE="-1273.23" BBK_DIFF="-7.0" BBK_DIFF_Y="-62.9"/>
      <bbk:Obs TIME_PERIOD="1989-03" OBS_VALUE="-1189.597" BBK_DIFF="0.6" BBK_DIFF_Y="5.7"/>
      <bbk:Obs TIME_PERIOD="1989-02" OBS_VALUE="-1196.399" BBK_DIFF="12.0" BBK_DIFF_Y="-2.0"/>
      <bbk:Obs TIME_PERIOD="1989-01" OBS_VALUE="-1359.351" BBK_DIFF="-38.0" BBK_DIFF_Y="-191.2"/>
      <bbk:Obs TIME_PERIOD="1988-12" OBS_VALUE="-985.267" BBK_DIFF="12.0" BBK_DIFF_Y="22.3"/>
      <bbk:Obs TIME_PERIOD="1988-11" OBS_VALUE="-1119.059" BBK_DIFF="29.5" BBK_DIFF_Y="-0.4"/>
      <bbk:Obs TIME_PERIOD="1988-10" OBS_VALUE="-1588.299" BBK_DIFF="-43.0" BBK_DIFF_Y="-10.6"/>
      <bbk:Obs TIME_PERIOD="1988-09" OBS_VALUE="-1110.447" BBK_DIFF="-22.8" BBK_DIFF_Y="6.5"/>
      <bbk:Obs TIME_PERIOD="1988-08" OBS_VALUE="-904.55" BBK_DIFF="18.2" BBK_DIFF_Y="9.0"/>
      <bbk:Obs TIME_PERIOD="1988-07" OBS_VALUE="-1106.112" BBK_DIFF="-6.1" BBK_DIFF_Y="6.8"/>
      <bbk:Obs TIME_PERIOD="1988-06" OBS_VALUE="-1042.153" BBK_DIFF="19.0" BBK_DIFF_Y="-5.2"/>
      <bbk:Obs TIME_PERIOD="1988-05" OBS_VALUE="-1286.055" BBK_DIFF="-64.5" BBK_DIFF_Y="-15.7"/>
      <bbk:Obs TIME_PERIOD="1988-04" OBS_VALUE="-781.612" BBK_DIFF="38.0" BBK_DIFF_Y="25.0"/>
      <bbk:Obs TIME_PERIOD="1988-03" OBS_VALUE="-1261.54" BBK_DIFF="-7.6" BBK_DIFF_Y="-0.7"/>
      <bbk:Obs TIME_PERIOD="1988-02" OBS_VALUE="-1172.75" BBK_DIFF="-151.2" BBK_DIFF_Y="-5.2"/>
      <bbk:Obs TIME_PERIOD="1988-01" OBS_VALUE="-466.857" BBK_DIFF="63.2" BBK_DIFF_Y="49.9"/>
      <bbk:Obs TIME_PERIOD="1987-12" OBS_VALUE="-1267.824" BBK_DIFF="-13.7" BBK_DIFF_Y="-28.7"/>
      <bbk:Obs TIME_PERIOD="1987-11" OBS_VALUE="-1115.128" BBK_DIFF="22.4" BBK_DIFF_Y="-3.7"/>
      <bbk:Obs TIME_PERIOD="1987-10" OBS_VALUE="-1436.103" BBK_DIFF="-20.9" BBK_DIFF_Y="-16.5"/>
      <bbk:Obs TIME_PERIOD="1987-09" OBS_VALUE="-1188.059" BBK_DIFF="-19.5" BBK_DIFF_Y="-9.3"/>
      <bbk:Obs TIME_PERIOD="1987-08" OBS_VALUE="-993.854" BBK_DIFF="16.3" BBK_DIFF_Y="-62.2"/>
      <bbk:Obs TIME_PERIOD="1987-07" OBS_VALUE="-1187.345" BBK_DIFF="-19.9" BBK_DIFF_Y="-7.7"/>
      <bbk:Obs TIME_PERIOD="1987-06" OBS_VALUE="-990.639" BBK_DIFF="10.8" BBK_DIFF_Y="15.4"/>
      <bbk:Obs TIME_PERIOD="1987-05" OBS_VALUE="-1111.112" BBK_DIFF="-6.6" BBK_DIFF_Y="-25.7"/>
      <bbk:Obs TIME_PERIOD="1987-04" OBS_VALUE="-1042.005" BBK_DIFF="16.8" BBK_DIFF_Y="17.6"/>
      <bbk:Obs TIME_PERIOD="1987-03" OBS_VALUE="-1252.8" BBK_DIFF="-12.4" BBK_DIFF_Y="-39.1"/>
      <bbk:Obs TIME_PERIOD="1987-02" OBS_VALUE="-1114.508" BBK_DIFF="-19.6" BBK_DIFF_Y="-15.8"/>
      <bbk:Obs TIME_PERIOD="1987-01" OBS_VALUE="-931.842" BBK_DIFF="5.4" BBK_DIFF_Y="6.6"/>
      <bbk:Obs TIME_PERIOD="1986-12" OBS_VALUE="-984.929" BBK_DIFF="8.4" BBK_DIFF_Y="-0.4"/>
      <bbk:Obs TIME_PERIOD="1986-11" OBS_VALUE="-1075.722" BBK_DIFF="12.7" BBK_DIFF_Y="-21.3"/>
      <bbk:Obs TIME_PERIOD="1986-10" OBS_VALUE="-1232.402" BBK_DIFF="-13.4" BBK_DIFF_Y="-6.8"/>
      <bbk:Obs TIME_PERIOD="1986-09" OBS_VALUE="-1086.852" BBK_DIFF="-77.4" BBK_DIFF_Y="-7.6"/>
      <bbk:Obs TIME_PERIOD="1986-08" OBS_VALUE="-612.682" BBK_DIFF="44.4" BBK_DIFF_Y="24.9"/>
      <bbk:Obs TIME_PERIOD="1986-07" OBS_VALUE="-1102.061" BBK_DIFF="5.9" BBK_DIFF_Y="-40.9"/>
      <bbk:Obs TIME_PERIOD="1986-06" OBS_VALUE="-1170.85" BBK_DIFF="-32.4" BBK_DIFF_Y="-12.2"/>
      <bbk:Obs TIME_PERIOD="1986-05" OBS_VALUE="-884.216" BBK_DIFF="30.0" BBK_DIFF_Y="-2.8"/>
      <bbk:Obs TIME_PERIOD="1986-04" OBS_VALUE="-1264.057" BBK_DIFF="-40.3" BBK_DIFF_Y="-44.4"/>
      <bbk:Obs TIME_PERIOD="1986-03" OBS_VALUE="-900.672" BBK_DIFF="6.4" BBK_DIFF_Y="-12.3"/>
      <bbk:Obs TIME_PERIOD="1986-02" OBS_VALUE="-962.566" BBK_DIFF="3.5" BBK_DIFF_Y="-23.9"/>
      <bbk:Obs TIME_PERIOD="1986-01" OBS_VALUE="-997.783" BBK_DIFF="-1.7" BBK_DIFF_Y="-26.1"/>
      <bbk:Obs TIME_PERIOD="1985-12" OBS_VALUE="-980.699" BBK_DIFF="-10.6" BBK_DIFF_Y="-9.4"/>
      <bbk:Obs TIME_PERIOD="1985-11" OBS_VALUE="-886.751" BBK_DIFF="23.1" BBK_DIFF_Y="4.1"/>
      <bbk:Obs TIME_PERIOD="1985-10" OBS_VALUE="-1153.598" BBK_DIFF="-14.2" BBK_DIFF_Y="-5.0"/>
      <bbk:Obs TIME_PERIOD="1985-09" OBS_VALUE="-1010.533" BBK_DIFF="-23.9" BBK_DIFF_Y="-10.1"/>
      <bbk:Obs TIME_PERIOD="1985-08" OBS_VALUE="-815.437" BBK_DIFF="-4.3" BBK_DIFF_Y="-8.1"/>
      <bbk:Obs TIME_PERIOD="1985-07" OBS_VALUE="-782.039" BBK_DIFF="25.1" BBK_DIFF_Y="8.8"/>
      <bbk:Obs TIME_PERIOD="1985-06" OBS_VALUE="-1044.0" BBK_DIFF="-21.4" BBK_DIFF_Y="-65.5"/>
      <bbk:Obs TIME_PERIOD="1985-05" OBS_VALUE="-859.899" BBK_DIFF="1.8" BBK_DIFF_Y="11.2"/>
      <bbk:Obs TIME_PERIOD="1985-04" OBS_VALUE="-875.478" BBK_DIFF="-9.2" BBK_DIFF_Y="2.1"/>
      <bbk:Obs TIME_PERIOD="1985-03" OBS_VALUE="-801.687" BBK_DIFF="-3.2" BBK_DIFF_Y="8.6"/>
      <bbk:Obs TIME_PERIOD="1985-02" OBS_VALUE="-776.6" BBK_DIFF="1.9" BBK_DIFF_Y="17.7"/>
      <bbk:Obs TIME_PERIOD="1985-01" OBS_VALUE="-791.408" BBK_DIFF="11.7" BBK_DIFF_Y="-7.8"/>
      <bbk:Obs TIME_PERIOD="1984-12" OBS_VALUE="-896.497" BBK_DIFF="3.0" BBK_DIFF_Y="1.1"/>
      <bbk:Obs TIME_PERIOD="1984-11" OBS_VALUE="-924.254" BBK_DIFF="15.9" BBK_DIFF_Y="-21.7"/>
      <bbk:Obs TIME_PERIOD="1984-10" OBS_VALUE="-1098.934" BBK_DIFF="-19.7" BBK_DIFF_Y="-42.9"/>
      <bbk:Obs TIME_PERIOD="1984-09" OBS_VALUE="-918.095" BBK_DIFF="-21.7" BBK_DIFF_Y="-16.9"/>
      <bbk:Obs TIME_PERIOD="1984-08" OBS_VALUE="-754.415" BBK_DIFF="12.0" BBK_DIFF_Y="-38.0"/>
      <bbk:Obs TIME_PERIOD="1984-07" OBS_VALUE="-857.365" BBK_DIFF="-35.9" BBK_DIFF_Y="-16.3"/>
      <bbk:Obs TIME_PERIOD="1984-06" OBS_VALUE="-630.987" BBK_DIFF="34.8" BBK_DIFF_Y="45.2"/>
      <bbk:Obs TIME_PERIOD="1984-05" OBS_VALUE="-968.303" BBK_DIFF="-8.3" BBK_DIFF_Y="-38.7"/>
      <bbk:Obs TIME_PERIOD="1984-04" OBS_VALUE="-893.829" BBK_DIFF="-1.9" BBK_DIFF_Y="-25.7"/>
      <bbk:Obs TIME_PERIOD="1984-03" OBS_VALUE="-877.548" BBK_DIFF="7.0" BBK_DIFF_Y="-7.3"/>
      <bbk:Obs TIME_PERIOD="1984-02" OBS_VALUE="-943.211" BBK_DIFF="-28.5" BBK_DIFF_Y="-54.3"/>
      <bbk:Obs TIME_PERIOD="1984-01" OBS_VALUE="-734.024" BBK_DIFF="19.0" BBK_DIFF_Y="-6.9"/>
      <bbk:Obs TIME_PERIOD="1983-12" OBS_VALUE="-906.644" BBK_DIFF="-19.3" BBK_DIFF_Y="-58.0"/>
      <bbk:Obs TIME_PERIOD="1983-11" OBS_VALUE="-759.744" BBK_DIFF="1.2" BBK_DIFF_Y="-23.5"/>
      <bbk:Obs TIME_PERIOD="1983-10" OBS_VALUE="-769.124" BBK_DIFF="2.1" BBK_DIFF_Y="-23.1"/>
      <bbk:Obs TIME_PERIOD="1983-09" OBS_VALUE="-785.309" BBK_DIFF="-43.6" BBK_DIFF_Y="-17.1"/>
      <bbk:Obs TIME_PERIOD="1983-08" OBS_VALUE="-546.771" BBK_DIFF="25.9" BBK_DIFF_Y="-11.1"/>
      <bbk:Obs TIME_PERIOD="1983-07" OBS_VALUE="-737.424" BBK_DIFF="36.0" BBK_DIFF_Y="-23.1"/>
      <bbk:Obs TIME_PERIOD="1983-06" OBS_VALUE="-1152.169" BBK_DIFF="-65.0" BBK_DIFF_Y="-76.4"/>
      <bbk:Obs TIME_PERIOD="1983-05" OBS_VALUE="-698.309" BBK_DIFF="1.8" BBK_DIFF_Y="-23.8"/>
      <bbk:Obs TIME_PERIOD="1983-04" OBS_VALUE="-711.086" BBK_DIFF="13.1" BBK_DIFF_Y="-33.3"/>
      <bbk:Obs TIME_PERIOD="1983-03" OBS_VALUE="-818.225" BBK_DIFF="-33.8" BBK_DIFF_Y="-10.5"/>
      <bbk:Obs TIME_PERIOD="1983-02" OBS_VALUE="-611.333" BBK_DIFF="11.0" BBK_DIFF_Y="-32.4"/>
      <bbk:Obs TIME_PERIOD="1983-01" OBS_VALUE="-686.833" BBK_DIFF="-19.7" BBK_DIFF_Y="-44.3"/>
      <bbk:Obs TIME_PERIOD="1982-12" OBS_VALUE="-573.778" BBK_DIFF="6.8" BBK_DIFF_Y="-17.7"/>
      <bbk:Obs TIME_PERIOD="1982-11" OBS_VALUE="-615.394" BBK_DIFF="1.5" BBK_DIFF_Y="6.5"/>
      <bbk:Obs TIME_PERIOD="1982-10" OBS_VALUE="-624.91" BBK_DIFF="6.8" BBK_DIFF_Y="6.4"/>
      <bbk:Obs TIME_PERIOD="1982-09" OBS_VALUE="-670.623" BBK_DIFF="-36.2" BBK_DIFF_Y="-9.7"/>
      <bbk:Obs TIME_PERIOD="1982-08" OBS_VALUE="-492.33" BBK_DIFF="17.8" BBK_DIFF_Y="-3.9"/>
      <bbk:Obs TIME_PERIOD="1982-07" OBS_VALUE="-598.918" BBK_DIFF="8.3" BBK_DIFF_Y="-2.5"/>
      <bbk:Obs TIME_PERIOD="1982-06" OBS_VALUE="-653.289" BBK_DIFF="-15.9" BBK_DIFF_Y="-5.7"/>
      <bbk:Obs TIME_PERIOD="1982-05" OBS_VALUE="-563.885" BBK_DIFF="-5.7" BBK_DIFF_Y="6.8"/>
      <bbk:Obs TIME_PERIOD="1982-04" OBS_VALUE="-533.481" BBK_DIFF="28.0" BBK_DIFF_Y="-12.4"/>
      <bbk:Obs TIME_PERIOD="1982-03" OBS_VALUE="-740.585" BBK_DIFF="-60.4" BBK_DIFF_Y="-15.2"/>
      <bbk:Obs TIME_PERIOD="1982-02" OBS_VALUE="-461.826" BBK_DIFF="3.0" BBK_DIFF_Y="2.3"/>
      <bbk:Obs TIME_PERIOD="1982-01" OBS_VALUE="-475.997" BBK_DIFF="2.4" BBK_DIFF_Y="3.1"/>
      <bbk:Obs TIME_PERIOD="1981-12" OBS_VALUE="-487.485" BBK_DIFF="25.9" BBK_DIFF_Y="7.9"/>
      <bbk:Obs TIME_PERIOD="1981-11" OBS_VALUE="-658.026" BBK_DIFF="1.5" BBK_DIFF_Y="-5.9"/>
      <bbk:Obs TIME_PERIOD="1981-10" OBS_VALUE="-667.934" BBK_DIFF="-9.3" BBK_DIFF_Y="1.9"/>
      <bbk:Obs TIME_PERIOD="1981-09" OBS_VALUE="-611.052" BBK_DIFF="-28.9" BBK_DIFF_Y="-0.9"/>
      <bbk:Obs TIME_PERIOD="1981-08" OBS_VALUE="-473.917" BBK_DIFF="18.9" BBK_DIFF_Y="-6.2"/>
      <bbk:Obs TIME_PERIOD="1981-07" OBS_VALUE="-584.185" BBK_DIFF="5.5" BBK_DIFF_Y="2.9"/>
      <bbk:Obs TIME_PERIOD="1981-06" OBS_VALUE="-618.194" BBK_DIFF="-2.2" BBK_DIFF_Y="-23.9"/>
      <bbk:Obs TIME_PERIOD="1981-05" OBS_VALUE="-605.132" BBK_DIFF="-27.4" BBK_DIFF_Y="-4.8"/>
      <bbk:Obs TIME_PERIOD="1981-04" OBS_VALUE="-474.819" BBK_DIFF="26.2" BBK_DIFF_Y="27.9"/>
      <bbk:Obs TIME_PERIOD="1981-03" OBS_VALUE="-642.982" BBK_DIFF="-36.0" BBK_DIFF_Y="2.0"/>
      <bbk:Obs TIME_PERIOD="1981-02" OBS_VALUE="-472.635" BBK_DIFF="3.8" BBK_DIFF_Y="35.0"/>
      <bbk:Obs TIME_PERIOD="1981-01" OBS_VALUE="-491.28" BBK_DIFF="7.2" BBK_DIFF_Y="-5.8"/>
      <bbk:Obs TIME_PERIOD="1980-12" OBS_VALUE="-529.365" BBK_DIFF="14.8" BBK_DIFF_Y="-7.3"/>
      <bbk:Obs TIME_PERIOD="1980-11" OBS_VALUE="-621.516" BBK_DIFF="8.7" BBK_DIFF_Y="-3.0"/>
      <bbk:Obs TIME_PERIOD="1980-10" OBS_VALUE="-680.962" BBK_DIFF="-12.4" BBK_DIFF_Y="6.7"/>
      <bbk:Obs TIME_PERIOD="1980-09" OBS_VALUE="-605.59" BBK_DIFF="-35.7" BBK_DIFF_Y="-15.6"/>
      <bbk:Obs TIME_PERIOD="1980-08" OBS_VALUE="-446.161" BBK_DIFF="25.9" BBK_DIFF_Y="10.4"/>
      <bbk:Obs TIME_PERIOD="1980-07" OBS_VALUE="-601.809" BBK_DIFF="-20.6" BBK_DIFF_Y="-17.0"/>
      <bbk:Obs TIME_PERIOD="1980-06" OBS_VALUE="-499.001" BBK_DIFF="13.6" BBK_DIFF_Y="2.3"/>
      <bbk:Obs TIME_PERIOD="1980-05" OBS_VALUE="-577.642" BBK_DIFF="12.3" BBK_DIFF_Y="-5.8"/>
      <bbk:Obs TIME_PERIOD="1980-04" OBS_VALUE="-658.663" BBK_DIFF="-0.4" BBK_DIFF_Y="-12.8"/>
      <bbk:Obs TIME_PERIOD="1980-03" OBS_VALUE="-656.357" BBK_DIFF="9.7" BBK_DIFF_Y="-3.7"/>
      <bbk:Obs TIME_PERIOD="1980-02" OBS_VALUE="-726.993" BBK_DIFF="-56.5" BBK_DIFF_Y="-28.4"/>
      <bbk:Obs TIME_PERIOD="1980-01" OBS_VALUE="-464.404" BBK_DIFF="5.8" BBK_DIFF_Y="9.0"/>
      <bbk:Obs TIME_PERIOD="1979-12" OBS_VALUE="-493.168" BBK_DIFF="18.3" BBK_DIFF_Y="4.5"/>
      <bbk:Obs TIME_PERIOD="1979-11" OBS_VALUE="-603.568" BBK_DIFF="17.3" BBK_DIFF_Y="1.5"/>
      <bbk:Obs TIME_PERIOD="1979-10" OBS_VALUE="-730.213" BBK_DIFF="-39.4" BBK_DIFF_Y="-49.3"/>
      <bbk:Obs TIME_PERIOD="1979-09" OBS_VALUE="-523.771" BBK_DIFF="-5.2" BBK_DIFF_Y="-7.6"/>
      <bbk:Obs TIME_PERIOD="1979-08" OBS_VALUE="-497.937" BBK_DIFF="3.2" BBK_DIFF_Y="-14.2"/>
      <bbk:Obs TIME_PERIOD="1979-07" OBS_VALUE="-514.546" BBK_DIFF="-0.8" BBK_DIFF_Y="-28.0"/>
      <bbk:Obs TIME_PERIOD="1979-06" OBS_VALUE="-510.515" BBK_DIFF="6.5" BBK_DIFF_Y="19.4"/>
      <bbk:Obs TIME_PERIOD="1979-05" OBS_VALUE="-545.887" BBK_DIFF="6.5" BBK_DIFF_Y="-23.5"/>
      <bbk:Obs TIME_PERIOD="1979-04" OBS_VALUE="-584.105" BBK_DIFF="7.7" BBK_DIFF_Y="-32.1"/>
      <bbk:Obs TIME_PERIOD="1979-03" OBS_VALUE="-632.65" BBK_DIFF="-11.8" BBK_DIFF_Y="-36.5"/>
      <bbk:Obs TIME_PERIOD="1979-02" OBS_VALUE="-566.025" BBK_DIFF="-10.9" BBK_DIFF_Y="-44.7"/>
      <bbk:Obs TIME_PERIOD="1979-01" OBS_VALUE="-510.349" BBK_DIFF="1.2" BBK_DIFF_Y="-3.5"/>
      <bbk:Obs TIME_PERIOD="1978-12" OBS_VALUE="-516.339" BBK_DIFF="15.7" BBK_DIFF_Y="11.3"/>
      <bbk:Obs TIME_PERIOD="1978-11" OBS_VALUE="-612.479" BBK_DIFF="-25.2" BBK_DIFF_Y="-18.4"/>
      <bbk:Obs TIME_PERIOD="1978-10" OBS_VALUE="-489.146" BBK_DIFF="-0.5" BBK_DIFF_Y="6.4"/>
      <bbk:Obs TIME_PERIOD="1978-09" OBS_VALUE="-486.61" BBK_DIFF="-11.6" BBK_DIFF_Y="-18.0"/>
      <bbk:Obs TIME_PERIOD="1978-08" OBS_VALUE="-435.893" BBK_DIFF="-8.4" BBK_DIFF_Y="-21.6"/>
      <bbk:Obs TIME_PERIOD="1978-07" OBS_VALUE="-402.081" BBK_DIFF="36.5" BBK_DIFF_Y="5.8"/>
      <bbk:Obs TIME_PERIOD="1978-06" OBS_VALUE="-633.052" BBK_DIFF="-43.2" BBK_DIFF_Y="-29.4"/>
      <bbk:Obs TIME_PERIOD="1978-05" OBS_VALUE="-442.05" BBK_DIFF="0.0" BBK_DIFF_Y="8.7"/>
      <bbk:Obs TIME_PERIOD="1978-04" OBS_VALUE="-442.193" BBK_DIFF="4.6" BBK_DIFF_Y="1.0"/>
      <bbk:Obs TIME_PERIOD="1978-03" OBS_VALUE="-463.37" BBK_DIFF="-18.5" BBK_DIFF_Y="23.6"/>
      <bbk:Obs TIME_PERIOD="1978-02" OBS_VALUE="-391.188" BBK_DIFF="20.7" BBK_DIFF_Y="4.5"/>
      <bbk:Obs TIME_PERIOD="1978-01" OBS_VALUE="-493.265" BBK_DIFF="15.3" BBK_DIFF_Y="-26.5"/>
      <bbk:Obs TIME_PERIOD="1977-12" OBS_VALUE="-582.102" BBK_DIFF="-12.6" BBK_DIFF_Y="-32.4"/>
      <bbk:Obs TIME_PERIOD="1977-11" OBS_VALUE="-517.156" BBK_DIFF="1.0" BBK_DIFF_Y="-13.8"/>
      <bbk:Obs TIME_PERIOD="1977-10" OBS_VALUE="-522.497" BBK_DIFF="-26.7" BBK_DIFF_Y="-25.4"/>
      <bbk:Obs TIME_PERIOD="1977-09" OBS_VALUE="-412.487" BBK_DIFF="-15.0" BBK_DIFF_Y="-15.1"/>
      <bbk:Obs TIME_PERIOD="1977-08" OBS_VALUE="-358.584" BBK_DIFF="16.0" BBK_DIFF_Y="5.3"/>
      <bbk:Obs TIME_PERIOD="1977-07" OBS_VALUE="-426.904" BBK_DIFF="12.8" BBK_DIFF_Y="-5.0"/>
      <bbk:Obs TIME_PERIOD="1977-06" OBS_VALUE="-489.366" BBK_DIFF="-1.0" BBK_DIFF_Y="-27.7"/>
      <bbk:Obs TIME_PERIOD="1977-05" OBS_VALUE="-484.282" BBK_DIFF="-8.4" BBK_DIFF_Y="-7.0"/>
      <bbk:Obs TIME_PERIOD="1977-04" OBS_VALUE="-446.88" BBK_DIFF="26.3" BBK_DIFF_Y="-17.3"/>
      <bbk:Obs TIME_PERIOD="1977-03" OBS_VALUE="-606.336" BBK_DIFF="-48.1" BBK_DIFF_Y="-53.8"/>
      <bbk:Obs TIME_PERIOD="1977-02" OBS_VALUE="-409.411" BBK_DIFF="-5.0" BBK_DIFF_Y="-8.8"/>
      <bbk:Obs TIME_PERIOD="1977-01" OBS_VALUE="-389.967" BBK_DIFF="11.3" BBK_DIFF_Y="3.0"/>
      <bbk:Obs TIME_PERIOD="1976-12" OBS_VALUE="-439.582" BBK_DIFF="3.3" BBK_DIFF_Y="-57.2"/>
      <bbk:Obs TIME_PERIOD="1976-11" OBS_VALUE="-454.632" BBK_DIFF="-9.1" BBK_DIFF_Y="-44.7"/>
      <bbk:Obs TIME_PERIOD="1976-10" OBS_VALUE="-416.566" BBK_DIFF="-16.3" BBK_DIFF_Y="-11.7"/>
      <bbk:Obs TIME_PERIOD="1976-09" OBS_VALUE="-358.334" BBK_DIFF="5.4" BBK_DIFF_Y="-62.4"/>
      <bbk:Obs TIME_PERIOD="1976-08" OBS_VALUE="-378.714" BBK_DIFF="6.8" BBK_DIFF_Y="-33.0"/>
      <bbk:Obs TIME_PERIOD="1976-07" OBS_VALUE="-406.415" BBK_DIFF="-6.1" BBK_DIFF_Y="-74.5"/>
      <bbk:Obs TIME_PERIOD="1976-06" OBS_VALUE="-383.117" BBK_DIFF="15.4" BBK_DIFF_Y="-2.6"/>
      <bbk:Obs TIME_PERIOD="1976-05" OBS_VALUE="-452.622" BBK_DIFF="-18.8" BBK_DIFF_Y="-32.2"/>
      <bbk:Obs TIME_PERIOD="1976-04" OBS_VALUE="-380.929" BBK_DIFF="3.4" BBK_DIFF_Y="-7.5"/>
      <bbk:Obs TIME_PERIOD="1976-03" OBS_VALUE="-394.357" BBK_DIFF="-4.8" BBK_DIFF_Y="-30.2"/>
      <bbk:Obs TIME_PERIOD="1976-02" OBS_VALUE="-376.17" BBK_DIFF="6.5" BBK_DIFF_Y="-34.6"/>
      <bbk:Obs TIME_PERIOD="1976-01" OBS_VALUE="-402.137" BBK_DIFF="-43.8" BBK_DIFF_Y="-32.8"/>
      <bbk:Obs TIME_PERIOD="1975-12" OBS_VALUE="-279.555" BBK_DIFF="11.0" BBK_DIFF_Y="18.1"/>
      <bbk:Obs TIME_PERIOD="1975-11" OBS_VALUE="-314.181" BBK_DIFF="15.8" BBK_DIFF_Y="-0.6"/>
      <bbk:Obs TIME_PERIOD="1975-10" OBS_VALUE="-372.979" BBK_DIFF="-69.1" BBK_DIFF_Y="-5.7"/>
      <bbk:Obs TIME_PERIOD="1975-09" OBS_VALUE="-220.605" BBK_DIFF="22.6" BBK_DIFF_Y="26.0"/>
      <bbk:Obs TIME_PERIOD="1975-08" OBS_VALUE="-284.84" BBK_DIFF="-22.3" BBK_DIFF_Y="-0.1"/>
      <bbk:Obs TIME_PERIOD="1975-07" OBS_VALUE="-232.87" BBK_DIFF="37.6" BBK_DIFF_Y="16.8"/>
      <bbk:Obs TIME_PERIOD="1975-06" OBS_VALUE="-373.307" BBK_DIFF="-9.0" BBK_DIFF_Y="-31.3"/>
      <bbk:Obs TIME_PERIOD="1975-05" OBS_VALUE="-342.411" BBK_DIFF="3.4" BBK_DIFF_Y="-30.9"/>
      <bbk:Obs TIME_PERIOD="1975-04" OBS_VALUE="-354.505" BBK_DIFF="-17.1" BBK_DIFF_Y="3.2"/>
      <bbk:Obs TIME_PERIOD="1975-03" OBS_VALUE="-302.77" BBK_DIFF="-8.4" BBK_DIFF_Y="-3.1"/>
      <bbk:Obs TIME_PERIOD="1975-02" OBS_VALUE="-279.394" BBK_DIFF="7.7" BBK_DIFF_Y="4.7"/>
      <bbk:Obs TIME_PERIOD="1975-01" OBS_VALUE="-302.795" BBK_DIFF="11.3" BBK_DIFF_Y="6.5"/>
      <bbk:Obs TIME_PERIOD="1974-12" OBS_VALUE="-341.413" BBK_DIFF="-9.3" BBK_DIFF_Y="-17.5"/>
      <bbk:Obs TIME_PERIOD="1974-11" OBS_VALUE="-312.446" BBK_DIFF="11.5" BBK_DIFF_Y="12.4"/>
      <bbk:Obs TIME_PERIOD="1974-10" OBS_VALUE="-352.99" BBK_DIFF="-18.3" BBK_DIFF_Y="-9.4"/>
      <bbk:Obs TIME_PERIOD="1974-09" OBS_VALUE="-298.295" BBK_DIFF="-4.8" BBK_DIFF_Y="-6.5"/>
      <bbk:Obs TIME_PERIOD="1974-08" OBS_VALUE="-284.682" BBK_DIFF="-1.7" BBK_DIFF_Y="15.7"/>
      <bbk:Obs TIME_PERIOD="1974-07" OBS_VALUE="-280.014" BBK_DIFF="1.5" BBK_DIFF_Y="-0.7"/>
      <bbk:Obs TIME_PERIOD="1974-06" OBS_VALUE="-284.405" BBK_DIFF="-8.8" BBK_DIFF_Y="22.6"/>
      <bbk:Obs TIME_PERIOD="1974-05" OBS_VALUE="-261.509" BBK_DIFF="28.6" BBK_DIFF_Y="40.3"/>
      <bbk:Obs TIME_PERIOD="1974-04" OBS_VALUE="-366.357" BBK_DIFF="-24.8" BBK_DIFF_Y="-2.5"/>
      <bbk:Obs TIME_PERIOD="1974-03" OBS_VALUE="-293.583" BBK_DIFF="-0.2" BBK_DIFF_Y="9.0"/>
      <bbk:Obs TIME_PERIOD="1974-02" OBS_VALUE="-293.084" BBK_DIFF="9.5" BBK_DIFF_Y="11.6"/>
      <bbk:Obs TIME_PERIOD="1974-01" OBS_VALUE="-323.891" BBK_DIFF="-11.4" BBK_DIFF_Y="13.2"/>
      <bbk:Obs TIME_PERIOD="1973-12" OBS_VALUE="-290.667" BBK_DIFF="18.5" BBK_DIFF_Y="10.5"/>
      <bbk:Obs TIME_PERIOD="1973-11" OBS_VALUE="-356.701" BBK_DIFF="-10.5" BBK_DIFF_Y="-8.0"/>
      <bbk:Obs TIME_PERIOD="1973-10" OBS_VALUE="-322.728" BBK_DIFF="-15.3" BBK_DIFF_Y="8.1"/>
      <bbk:Obs TIME_PERIOD="1973-09" OBS_VALUE="-279.963" BBK_DIFF="17.1" BBK_DIFF_Y="-9.9"/>
      <bbk:Obs TIME_PERIOD="1973-08" OBS_VALUE="-337.86" BBK_DIFF="-21.5" BBK_DIFF_Y="-39.7"/>
      <bbk:Obs TIME_PERIOD="1973-07" OBS_VALUE="-278.188" BBK_DIFF="24.3" BBK_DIFF_Y="6.2"/>
      <bbk:Obs TIME_PERIOD="1973-06" OBS_VALUE="-367.518" BBK_DIFF="16.1" BBK_DIFF_Y="-11.6"/>
      <bbk:Obs TIME_PERIOD="1973-05" OBS_VALUE="-437.941" BBK_DIFF="-22.6" BBK_DIFF_Y="-32.2"/>
      <bbk:Obs TIME_PERIOD="1973-04" OBS_VALUE="-357.325" BBK_DIFF="-10.8" BBK_DIFF_Y="-27.8"/>
      <bbk:Obs TIME_PERIOD="1973-03" OBS_VALUE="-322.476" BBK_DIFF="2.7" BBK_DIFF_Y="-0.1"/>
      <bbk:Obs TIME_PERIOD="1973-02" OBS_VALUE="-331.41" BBK_DIFF="11.1" BBK_DIFF_Y="-11.1"/>
      <bbk:Obs TIME_PERIOD="1973-01" OBS_VALUE="-372.947" BBK_DIFF="-14.9" BBK_DIFF_Y="-25.8"/>
      <bbk:Obs TIME_PERIOD="1972-12" OBS_VALUE="-324.707" BBK_DIFF="1.7" BBK_DIFF_Y="-1.8"/>
      <bbk:Obs TIME_PERIOD="1972-11" OBS_VALUE="-330.373" BBK_DIFF="5.9" BBK_DIFF_Y="-7.4"/>
      <bbk:Obs TIME_PERIOD="1972-10" OBS_VALUE="-351.101" BBK_DIFF="-37.9" BBK_DIFF_Y="-19.9"/>
      <bbk:Obs TIME_PERIOD="1972-09" OBS_VALUE="-254.677" BBK_DIFF="-5.3" BBK_DIFF_Y="3.8"/>
      <bbk:Obs TIME_PERIOD="1972-08" OBS_VALUE="-241.911" BBK_DIFF="18.5" BBK_DIFF_Y="3.4"/>
      <bbk:Obs TIME_PERIOD="1972-07" OBS_VALUE="-296.686" BBK_DIFF="9.9" BBK_DIFF_Y="3.5"/>
      <bbk:Obs TIME_PERIOD="1972-06" OBS_VALUE="-329.292" BBK_DIFF="0.6" BBK_DIFF_Y="-19.3"/>
      <bbk:Obs TIME_PERIOD="1972-05" OBS_VALUE="-331.36" BBK_DIFF="-18.5" BBK_DIFF_Y="-13.5"/>
      <bbk:Obs TIME_PERIOD="1972-04" OBS_VALUE="-279.684" BBK_DIFF="13.2" BBK_DIFF_Y="4.9"/>
      <bbk:Obs TIME_PERIOD="1972-03" OBS_VALUE="-322.292" BBK_DIFF="-8.1" BBK_DIFF_Y="-21.0"/>
      <bbk:Obs TIME_PERIOD="1972-02" OBS_VALUE="-298.216" BBK_DIFF="-0.6" BBK_DIFF_Y="-21.7"/>
      <bbk:Obs TIME_PERIOD="1972-01" OBS_VALUE="-296.486" BBK_DIFF="7.0" BBK_DIFF_Y="-17.1"/>
      <bbk:Obs TIME_PERIOD="1971-12" OBS_VALUE="-318.849" BBK_DIFF="-3.7"/>
      <bbk:Obs TIME_PERIOD="1971-11" OBS_VALUE="-307.597" BBK_DIFF="-5.0"/>
      <bbk:Obs TIME_PERIOD="1971-10" OBS_VALUE="-292.926" BBK_DIFF="-10.6"/>
      <bbk:Obs TIME_PERIOD="1971-09" OBS_VALUE="-264.82" BBK_DIFF="-5.7"/>
      <bbk:Obs TIME_PERIOD="1971-08" OBS_VALUE="-250.457" BBK_DIFF="18.6"/>
      <bbk:Obs TIME_PERIOD="1971-07" OBS_VALUE="-307.529" BBK_DIFF="-11.4"/>
      <bbk:Obs TIME_PERIOD="1971-06" OBS_VALUE="-275.984" BBK_DIFF="5.5"/>
      <bbk:Obs TIME_PERIOD="1971-05" OBS_VALUE="-291.925" BBK_DIFF="0.8"/>
      <bbk:Obs TIME_PERIOD="1971-04" OBS_VALUE="-294.191" BBK_DIFF="-10.5"/>
      <bbk:Obs TIME_PERIOD="1971-03" OBS_VALUE="-266.348" BBK_DIFF="-8.7"/>
      <bbk:Obs TIME_PERIOD="1971-02" OBS_VALUE="-245.109" BBK_DIFF="3.2"/>
      <bbk:Obs TIME_PERIOD="1971-01" OBS_VALUE="-253.192"/>
    </bbk:Series>
  </bbk:DataSet>
</CompactData>
