Frequencies for first 10,000 rows of prov0100 variable in posclia2001 dataset :

   prov0100 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,971       99.71       99.71
   19940314 |          1        0.01       99.72
   19941101 |          1        0.01       99.73
   19941201 |          2        0.02       99.75
   19950118 |          1        0.01       99.76
   19950301 |          1        0.01       99.77
   19951101 |          1        0.01       99.78
   19960101 |          2        0.02       99.80
   19960201 |          1        0.01       99.81
   19960326 |          1        0.01       99.82
   19960801 |          1        0.01       99.83
   19961028 |          1        0.01       99.84
   19970101 |          1        0.01       99.85
   19970327 |          1        0.01       99.86
   19970602 |          1        0.01       99.87
   19970701 |          1        0.01       99.88
   19970708 |          4        0.04       99.92
   19980416 |          1        0.01       99.93
   19980902 |          2        0.02       99.95
   19981022 |          1        0.01       99.96
   19981101 |          1        0.01       99.97
   20010120 |          1        0.01       99.98
   20010501 |          1        0.01       99.99
   20010920 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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