Frequencies for first 10,000 rows of prov0100 variable in posclia1997 dataset :

   prov0100 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,938       99.38       99.38
   19940314 |          1        0.01       99.39
   19941101 |          1        0.01       99.40
   19941201 |          2        0.02       99.42
   19950118 |          2        0.02       99.44
   19950301 |          1        0.01       99.45
   19950903 |          1        0.01       99.46
   19951101 |          2        0.02       99.48
   19951107 |          2        0.02       99.50
   19951108 |          1        0.01       99.51
   19951109 |          2        0.02       99.53
   19960101 |         10        0.10       99.63
   19960126 |          2        0.02       99.65
   19960201 |          2        0.02       99.67
   19960215 |          1        0.01       99.68
   19960326 |          1        0.01       99.69
   19960524 |          5        0.05       99.74
   19960708 |          1        0.01       99.75
   19960807 |          1        0.01       99.76
   19960901 |          1        0.01       99.77
   19960905 |          3        0.03       99.80
   19961028 |          1        0.01       99.81
   19961104 |          1        0.01       99.82
   19961106 |          1        0.01       99.83
   19961231 |          2        0.02       99.85
   19970101 |          2        0.02       99.87
   19970301 |          1        0.01       99.88
   19970327 |          1        0.01       99.89
   19970430 |          1        0.01       99.90
   19970515 |          4        0.04       99.94
   19970601 |          1        0.01       99.95
   19970602 |          1        0.01       99.96
   19970701 |          2        0.02       99.98
   19971001 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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