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      <bbk:Obs TIME_PERIOD="1972-11" OBS_VALUE="10.144" BBK_DIFF="398.2" BBK_DIFF_Y="54.5"/>
      <bbk:Obs TIME_PERIOD="1972-10" OBS_VALUE="2.036" BBK_DIFF="50.5" BBK_DIFF_Y="-20.8"/>
      <bbk:Obs TIME_PERIOD="1972-09" OBS_VALUE="1.353" BBK_DIFF="5.1" BBK_DIFF_Y="282.1"/>
      <bbk:Obs TIME_PERIOD="1972-08" OBS_VALUE="1.287" BBK_DIFF="-78.1" BBK_DIFF_Y="6873.7"/>
      <bbk:Obs TIME_PERIOD="1972-07" OBS_VALUE="5.871" BBK_DIFF="-66.0" BBK_DIFF_Y="149.4"/>
      <bbk:Obs TIME_PERIOD="1972-06" OBS_VALUE="17.285" BBK_DIFF="511.4" BBK_DIFF_Y="451.4"/>
      <bbk:Obs TIME_PERIOD="1972-05" OBS_VALUE="-4.201" BBK_DIFF="-123.3" BBK_DIFF_Y="-154.9"/>
      <bbk:Obs TIME_PERIOD="1972-04" OBS_VALUE="-1.881" BBK_DIFF="-277.5" BBK_DIFF_Y="-528.5"/>
      <bbk:Obs TIME_PERIOD="1972-03" OBS_VALUE="1.06" BBK_DIFF="116.8" BBK_DIFF_Y="9.2"/>
      <bbk:Obs TIME_PERIOD="1972-02" OBS_VALUE="-6.295" BBK_DIFF="-905.0" BBK_DIFF_Y="-161.3"/>
      <bbk:Obs TIME_PERIOD="1972-01" OBS_VALUE="0.782" BBK_DIFF="-40.1" BBK_DIFF_Y="109.8"/>
      <bbk:Obs TIME_PERIOD="1971-12" OBS_VALUE="1.306" BBK_DIFF="-80.1"/>
      <bbk:Obs TIME_PERIOD="1971-11" OBS_VALUE="6.564" BBK_DIFF="155.3"/>
      <bbk:Obs TIME_PERIOD="1971-10" OBS_VALUE="2.571" BBK_DIFF="446.0"/>
      <bbk:Obs TIME_PERIOD="1971-09" OBS_VALUE="-0.743" BBK_DIFF="-3810.5"/>
      <bbk:Obs TIME_PERIOD="1971-08" OBS_VALUE="-0.019" BBK_DIFF="-100.8"/>
      <bbk:Obs TIME_PERIOD="1971-07" OBS_VALUE="2.354" BBK_DIFF="147.9"/>
      <bbk:Obs TIME_PERIOD="1971-06" OBS_VALUE="-4.919" BBK_DIFF="-164.3"/>
      <bbk:Obs TIME_PERIOD="1971-05" OBS_VALUE="7.648" BBK_DIFF="1642.1"/>
      <bbk:Obs TIME_PERIOD="1971-04" OBS_VALUE="0.439" BBK_DIFF="-54.8"/>
      <bbk:Obs TIME_PERIOD="1971-03" OBS_VALUE="0.971" BBK_DIFF="-90.5"/>
      <bbk:Obs TIME_PERIOD="1971-02" OBS_VALUE="10.272" BBK_DIFF="228.9"/>
      <bbk:Obs TIME_PERIOD="1971-01" OBS_VALUE="-7.972"/>
    </bbk:Series>
  </bbk:DataSet>
</CompactData>
