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      <bbk:Obs TIME_PERIOD="1972-11" OBS_VALUE="142.0" BBK_DIFF="0.0" BBK_DIFF_Y="20.3"/>
      <bbk:Obs TIME_PERIOD="1972-10" OBS_VALUE="142.0" BBK_DIFF="0.7" BBK_DIFF_Y="21.4"/>
      <bbk:Obs TIME_PERIOD="1972-09" OBS_VALUE="141.0" BBK_DIFF="0.7" BBK_DIFF_Y="27.0"/>
      <bbk:Obs TIME_PERIOD="1972-08" OBS_VALUE="140.0" BBK_DIFF="2.9" BBK_DIFF_Y="27.3"/>
      <bbk:Obs TIME_PERIOD="1972-07" OBS_VALUE="136.0" BBK_DIFF="3.0" BBK_DIFF_Y="24.8"/>
      <bbk:Obs TIME_PERIOD="1972-06" OBS_VALUE="132.0" BBK_DIFF="0.8" BBK_DIFF_Y="26.9"/>
      <bbk:Obs TIME_PERIOD="1972-05" OBS_VALUE="131.0" BBK_DIFF="1.6" BBK_DIFF_Y="31.0"/>
      <bbk:Obs TIME_PERIOD="1972-04" OBS_VALUE="129.0" BBK_DIFF="2.4" BBK_DIFF_Y="29.0"/>
      <bbk:Obs TIME_PERIOD="1972-03" OBS_VALUE="126.0" BBK_DIFF="1.6" BBK_DIFF_Y="9.6"/>
      <bbk:Obs TIME_PERIOD="1972-02" OBS_VALUE="124.0" BBK_DIFF="0.0" BBK_DIFF_Y="9.7"/>
      <bbk:Obs TIME_PERIOD="1972-01" OBS_VALUE="124.0" BBK_DIFF="4.2" BBK_DIFF_Y="10.7"/>
      <bbk:Obs TIME_PERIOD="1971-12" OBS_VALUE="119.0" BBK_DIFF="0.8" BBK_DIFF_Y="6.3"/>
      <bbk:Obs TIME_PERIOD="1971-11" OBS_VALUE="118.0" BBK_DIFF="0.9" BBK_DIFF_Y="9.3"/>
      <bbk:Obs TIME_PERIOD="1971-10" OBS_VALUE="117.0" BBK_DIFF="5.4" BBK_DIFF_Y="10.4"/>
      <bbk:Obs TIME_PERIOD="1971-09" OBS_VALUE="111.0" BBK_DIFF="0.9" BBK_DIFF_Y="8.8"/>
      <bbk:Obs TIME_PERIOD="1971-08" OBS_VALUE="110.0" BBK_DIFF="0.9" BBK_DIFF_Y="14.6"/>
      <bbk:Obs TIME_PERIOD="1971-07" OBS_VALUE="109.0" BBK_DIFF="4.8" BBK_DIFF_Y="23.9"/>
      <bbk:Obs TIME_PERIOD="1971-06" OBS_VALUE="104.0" BBK_DIFF="4.0" BBK_DIFF_Y="18.2"/>
      <bbk:Obs TIME_PERIOD="1971-05" OBS_VALUE="100.0" BBK_DIFF="0.0" BBK_DIFF_Y="14.9"/>
      <bbk:Obs TIME_PERIOD="1971-04" OBS_VALUE="100.0" BBK_DIFF="-13.0" BBK_DIFF_Y="16.3"/>
      <bbk:Obs TIME_PERIOD="1971-03" OBS_VALUE="115.0" BBK_DIFF="1.8" BBK_DIFF_Y="43.8"/>
      <bbk:Obs TIME_PERIOD="1971-02" OBS_VALUE="113.0" BBK_DIFF="0.9" BBK_DIFF_Y="48.7"/>
      <bbk:Obs TIME_PERIOD="1971-01" OBS_VALUE="112.0" BBK_DIFF="0.0" BBK_DIFF_Y="51.4"/>
      <bbk:Obs TIME_PERIOD="1970-12" OBS_VALUE="112.0" BBK_DIFF="3.7"/>
      <bbk:Obs TIME_PERIOD="1970-11" OBS_VALUE="108.0" BBK_DIFF="1.9"/>
      <bbk:Obs TIME_PERIOD="1970-10" OBS_VALUE="106.0" BBK_DIFF="3.9"/>
      <bbk:Obs TIME_PERIOD="1970-09" OBS_VALUE="102.0" BBK_DIFF="6.3"/>
      <bbk:Obs TIME_PERIOD="1970-08" OBS_VALUE="96.0" BBK_DIFF="9.1"/>
      <bbk:Obs TIME_PERIOD="1970-07" OBS_VALUE="88.0" BBK_DIFF="0.0"/>
      <bbk:Obs TIME_PERIOD="1970-06" OBS_VALUE="88.0" BBK_DIFF="1.1"/>
      <bbk:Obs TIME_PERIOD="1970-05" OBS_VALUE="87.0" BBK_DIFF="1.2"/>
      <bbk:Obs TIME_PERIOD="1970-04" OBS_VALUE="86.0" BBK_DIFF="7.5"/>
      <bbk:Obs TIME_PERIOD="1970-03" OBS_VALUE="80.0" BBK_DIFF="5.3"/>
      <bbk:Obs TIME_PERIOD="1970-02" OBS_VALUE="76.0" BBK_DIFF="2.7"/>
      <bbk:Obs TIME_PERIOD="1970-01" OBS_VALUE="74.0"/>
    </bbk:Series>
  </bbk:DataSet>
</CompactData>
