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      <bbk:Obs TIME_PERIOD="1983-05" OBS_VALUE="7.42" BBK_DIFF="4.1" BBK_DIFF_Y="-15.6"/>
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      <bbk:Obs TIME_PERIOD="1983-02" OBS_VALUE="7.44" BBK_DIFF="-0.3" BBK_DIFF_Y="-24.3"/>
      <bbk:Obs TIME_PERIOD="1983-01" OBS_VALUE="7.46" BBK_DIFF="-4.5"/>
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      <bbk:Obs TIME_PERIOD="1982-09" OBS_VALUE="8.64" BBK_DIFF="-5.2"/>
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      <bbk:Obs TIME_PERIOD="1982-06" OBS_VALUE="9.16" BBK_DIFF="4.2"/>
      <bbk:Obs TIME_PERIOD="1982-05" OBS_VALUE="8.79" BBK_DIFF="-2.3"/>
      <bbk:Obs TIME_PERIOD="1982-04" OBS_VALUE="9.0" BBK_DIFF="-5.2"/>
      <bbk:Obs TIME_PERIOD="1982-03" OBS_VALUE="9.49" BBK_DIFF="-3.5"/>
      <bbk:Obs TIME_PERIOD="1982-02" OBS_VALUE="9.83"/>
      <bbk:Obs TIME_PERIOD="1982-01" BBK_OBS_STATUS="K"/>
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  </bbk:DataSet>
</CompactData>
