Frequencies for first 10,000 rows of pct012n136 variable in sf12000860us29 dataset :

   29 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,205       92.05       92.05
          1 |        502        5.02       97.07
          2 |        145        1.45       98.52
          3 |         50        0.50       99.02
          4 |         31        0.31       99.33
          5 |         20        0.20       99.53
          6 |         12        0.12       99.65
          7 |          5        0.05       99.70
          8 |          3        0.03       99.73
          9 |          6        0.06       99.79
         10 |          5        0.05       99.84
         11 |          2        0.02       99.86
         13 |          2        0.02       99.88
         14 |          2        0.02       99.90
         17 |          1        0.01       99.91
         18 |          2        0.02       99.93
         20 |          1        0.01       99.94
         23 |          3        0.03       99.97
         24 |          1        0.01       99.98
         37 |          1        0.01       99.99
         53 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017