20040116
       19800102      72.9
       19800103      75.5
       19800113      81.1
       19800114      73.8
       19830121      73.9
       19830122      76.3
       19830123      71.5
       19850109      84.1
       19850110      76.6
       19850118      70.1
       19850119      74.7
       19850128      77.5
       19930122      71.5
       20020103      73.8
       20020117      80.9
       20020118      75.4
       20040113      81.0
       20040114      79.0
       20040115      85.5
       20040116     100.0
       20040117      73.0
       20080131      70.3
       20090106      71.8