Frequencies for first 10,000 rows of prov1750 variable in pos1999 dataset :

rehabilitat |
   ion unit |
   terminat |
       date |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,963       99.63       99.63
   19850616 |          1        0.01       99.64
   19871231 |          1        0.01       99.65
   19880630 |          1        0.01       99.66
   19880701 |          2        0.02       99.68
   19890101 |          1        0.01       99.69
   19890401 |          1        0.01       99.70
   19890701 |          2        0.02       99.72
   19900630 |          1        0.01       99.73
   19910701 |          1        0.01       99.74
   19910911 |          1        0.01       99.75
   19910930 |          1        0.01       99.76
   19920101 |          1        0.01       99.77
   19920501 |          1        0.01       99.78
   19921027 |          1        0.01       99.79
   19930531 |          1        0.01       99.80
   19930701 |          2        0.02       99.82
   19931001 |          1        0.01       99.83
   19940301 |          1        0.01       99.84
   19940401 |          1        0.01       99.85
   19940428 |          1        0.01       99.86
   19940531 |          1        0.01       99.87
   19941216 |          1        0.01       99.88
   19950101 |          1        0.01       99.89
   19950630 |          2        0.02       99.91
   19951231 |          3        0.03       99.94
   19960930 |          1        0.01       99.95
   19961101 |          1        0.01       99.96
   19970601 |          1        0.01       99.97
   19990105 |          2        0.02       99.99
   19991219 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016