Frequencies for first 10,000 rows of pct012k127 variable in sf12010860us30 dataset :

   20 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,833       88.33       88.33
          1 |        795        7.95       96.28
          2 |        218        2.18       98.46
          3 |         67        0.67       99.13
          4 |         25        0.25       99.38
          5 |         18        0.18       99.56
          6 |         12        0.12       99.68
          7 |          5        0.05       99.73
          8 |          6        0.06       99.79
          9 |          5        0.05       99.84
         10 |          1        0.01       99.85
         11 |          1        0.01       99.86
         13 |          1        0.01       99.87
         14 |          2        0.02       99.89
         24 |          1        0.01       99.90
         26 |          2        0.02       99.92
         29 |          1        0.01       99.93
         34 |          1        0.01       99.94
         40 |          2        0.02       99.96
         51 |          1        0.01       99.97
         79 |          2        0.02       99.99
         89 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Apr 2017