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      <bbk:Obs TIME_PERIOD="1983-05" OBS_VALUE="7.85" BBK_DIFF="2.1" BBK_DIFF_Y="-10.5"/>
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      <bbk:Obs TIME_PERIOD="1983-03" OBS_VALUE="7.63" BBK_DIFF="-3.3" BBK_DIFF_Y="-19.2"/>
      <bbk:Obs TIME_PERIOD="1983-02" OBS_VALUE="7.89" BBK_DIFF="0.3" BBK_DIFF_Y="-18.9"/>
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      <bbk:Obs TIME_PERIOD="1982-08" OBS_VALUE="9.03" BBK_DIFF="-2.7"/>
      <bbk:Obs TIME_PERIOD="1982-07" OBS_VALUE="9.28" BBK_DIFF="1.4"/>
      <bbk:Obs TIME_PERIOD="1982-06" OBS_VALUE="9.15" BBK_DIFF="4.3"/>
      <bbk:Obs TIME_PERIOD="1982-05" OBS_VALUE="8.77" BBK_DIFF="-2.2"/>
      <bbk:Obs TIME_PERIOD="1982-04" OBS_VALUE="8.97" BBK_DIFF="-5.0"/>
      <bbk:Obs TIME_PERIOD="1982-03" OBS_VALUE="9.44" BBK_DIFF="-3.0"/>
      <bbk:Obs TIME_PERIOD="1982-02" OBS_VALUE="9.73"/>
      <bbk:Obs TIME_PERIOD="1982-01" BBK_OBS_STATUS="K"/>
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  </bbk:DataSet>
</CompactData>
