19800112   74.6
  19800113   89.9
  19800114   77.6
  19830121   85.0
  19830122   78.7
  19830123   73.9
  19850109   94.8
  19850110   73.4
  19850118   85.0
  19850119   89.3
  19850120   72.5
  19850128   84.4
  19850129   76.8
  19860106   81.2
  19860107   80.7
  19870118   73.4
  19880101   79.0
  19880110   76.3
  19910105   76.3
  19920113   71.3
  19920118   77.5
  19930121   71.1
  19930122   73.3
  19940104   80.4
  19970103   76.9
  19980109   80.5
  20020117   74.2
  20020118   79.2
  20020119   70.5
  20030115   71.7
  20030117   72.2
  20040113   85.0
  20040114   80.9
  20040115   88.3
  20040116   88.6
  20040123   74.4
  20080131   78.3
  20090105   79.6