Frequencies for first 10,000 rows of pct012c039 variable in sf12010860us22 dataset :

   36 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,477       84.77       84.77
          1 |        942        9.42       94.19
          2 |        294        2.94       97.13
          3 |        131        1.31       98.44
          4 |         59        0.59       99.03
          5 |         24        0.24       99.27
          6 |         27        0.27       99.54
          7 |         18        0.18       99.72
          8 |          4        0.04       99.76
          9 |          7        0.07       99.83
         10 |          4        0.04       99.87
         11 |          1        0.01       99.88
         14 |          1        0.01       99.89
         16 |          1        0.01       99.90
         18 |          2        0.02       99.92
         22 |          2        0.02       99.94
         26 |          1        0.01       99.95
         27 |          1        0.01       99.96
         47 |          1        0.01       99.97
         59 |          1        0.01       99.98
         63 |          1        0.01       99.99
         74 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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