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      <bbk:Obs TIME_PERIOD="1969-05" OBS_VALUE="0.686" BBK_DIFF="-3.1"/>
      <bbk:Obs TIME_PERIOD="1969-04" OBS_VALUE="0.708" BBK_DIFF="21.4"/>
      <bbk:Obs TIME_PERIOD="1969-03" OBS_VALUE="0.583" BBK_DIFF="-0.2"/>
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      <bbk:Obs TIME_PERIOD="1969-01" OBS_VALUE="0.538" BBK_DIFF="-27.4"/>
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  </bbk:DataSet>
</CompactData>
