Frequencies for first 10,000 rows of pct012k027 variable in sf12010860us30 dataset :

   24 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,894       88.94       88.94
          1 |        790        7.90       96.84
          2 |        184        1.84       98.68
          3 |         62        0.62       99.30
          4 |         22        0.22       99.52
          5 |         20        0.20       99.72
          6 |          7        0.07       99.79
          7 |          2        0.02       99.81
          8 |          2        0.02       99.83
         10 |          3        0.03       99.86
         11 |          1        0.01       99.87
         12 |          1        0.01       99.88
         13 |          1        0.01       99.89
         17 |          1        0.01       99.90
         20 |          2        0.02       99.92
         23 |          1        0.01       99.93
         25 |          1        0.01       99.94
         27 |          1        0.01       99.95
         33 |          1        0.01       99.96
         39 |          1        0.01       99.97
         52 |          1        0.01       99.98
         53 |          1        0.01       99.99
         62 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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