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      <bbk:Obs TIME_PERIOD="1971-12" OBS_VALUE="25.643" BBK_DIFF="289.1"/>
      <bbk:Obs TIME_PERIOD="1971-11" OBS_VALUE="6.591" BBK_DIFF="-69.3"/>
      <bbk:Obs TIME_PERIOD="1971-10" OBS_VALUE="21.452" BBK_DIFF="34.6"/>
      <bbk:Obs TIME_PERIOD="1971-09" OBS_VALUE="15.941" BBK_DIFF="-58.8"/>
      <bbk:Obs TIME_PERIOD="1971-08" OBS_VALUE="38.682" BBK_DIFF="24.0"/>
      <bbk:Obs TIME_PERIOD="1971-07" OBS_VALUE="31.191" BBK_DIFF="-62.1"/>
      <bbk:Obs TIME_PERIOD="1971-06" OBS_VALUE="82.2" BBK_DIFF="1085.1"/>
      <bbk:Obs TIME_PERIOD="1971-05" OBS_VALUE="6.936" BBK_DIFF="110.2"/>
      <bbk:Obs TIME_PERIOD="1971-04" OBS_VALUE="-68.116" BBK_DIFF="-282.0"/>
      <bbk:Obs TIME_PERIOD="1971-03" OBS_VALUE="37.427" BBK_DIFF="3.0"/>
      <bbk:Obs TIME_PERIOD="1971-02" OBS_VALUE="36.35" BBK_DIFF="-30.7"/>
      <bbk:Obs TIME_PERIOD="1971-01" OBS_VALUE="52.45"/>
    </bbk:Series>
  </bbk:DataSet>
</CompactData>
