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      <bbk:Obs TIME_PERIOD="1971-08" OBS_VALUE="23.943" BBK_DIFF="1.3" BBK_DIFF_Y="10.4" BBK_EURO="12.242"/>
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      <bbk:Obs TIME_PERIOD="1971-06" OBS_VALUE="23.442" BBK_DIFF="0.4" BBK_DIFF_Y="9.7" BBK_EURO="11.986"/>
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      <bbk:Obs TIME_PERIOD="1970-09" OBS_VALUE="21.831" BBK_DIFF="0.7" BBK_DIFF_Y="7.3" BBK_EURO="11.162"/>
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</CompactData>
