19800112        12    85.6
  19800113        13    81.3
  19800116        16    64.6
  19800122        22    66.1
  19800126        26    66.3
  19810123        54    70.5
  19820103        65    68.3
  19820104        66    69.4
  19820112        74    78.3
  19820124        86    70.5
  19820125        87    74.1
  19820126        88    71.7
  19830106        99    66.2
  19830107       100    66.4
  19830121       114    76.2
  19830123       116    60.2
  19850108       163    68.0
  19850109       164    85.5
  19850117       172    78.4
  19850118       173    87.5
  19850119       174    86.1
  19850120       175    76.9
  19850128       183    78.3
  19850129       184    74.1
  19850130       185    70.4
  19860106       192    91.6
  19860107       193    77.5
  19870118       235    68.2
  19880101       249    78.3
  19880109       257    69.9
  19880110       258    83.8
  19910105       346    67.2
  19910114       355    73.1
  19910115       356    71.4
  19910116       357    63.6
  19910117       358    62.1
  19910126       367    60.9
  19910128       369    64.2
  19920113       385    61.3
  19920117       389    82.8
  19920118       390    73.7
  19920122       394    74.3
  19920123       395    65.5
  19920124       396    70.2
  19930121       424    71.7
  19930122       425    70.3
  19940104       438    86.5
  19940112       446    60.5
  19940114       448    68.2
  19940115       449    65.5
  19960101       497    76.0
  19960102       498    70.9
  19970103       530    84.1
  19970104       531    79.1
  19970105       532    62.1
  19980109       567    84.4
  19980110       568    65.6
  19980120       578    61.8
  19990103       592    72.4
  20000102       622    61.0
  20000127       647    70.5
  20010101       652    66.1
  20020118       700    68.9
  20020119       701    80.7
  20030107       720    70.1
  20030114       727    63.9
  20030115       728    61.0
  20030117       730    74.6
  20030129       742    67.3
  20030130       743    71.5
  20040102       746    74.3
  20040103       747    60.9
  20040109       753    60.5
  20040110       754    60.5
  20040112       756    67.5
  20040113       757    74.4
  20040114       758    64.3
  20040115       759    80.5
  20040116       760    71.9
  20040122       766    60.6
  20040123       767    76.6
  20080107       875    71.8
  20080121       889    64.0
  20080130       898    66.7
  20080131       899    69.1
  20090105       904    73.1
  20090121       920    61.7
  20090123       922    66.6