Frequencies for first 10,000 rows of pct012c146 variable in sf12010860us22 dataset :

   39 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,375       83.75       83.75
          1 |        988        9.88       93.63
          2 |        346        3.46       97.09
          3 |        125        1.25       98.34
          4 |         62        0.62       98.96
          5 |         35        0.35       99.31
          6 |         22        0.22       99.53
          7 |          6        0.06       99.59
          8 |         13        0.13       99.72
          9 |          2        0.02       99.74
         10 |          5        0.05       99.79
         11 |          3        0.03       99.82
         12 |          1        0.01       99.83
         13 |          1        0.01       99.84
         14 |          2        0.02       99.86
         16 |          3        0.03       99.89
         18 |          1        0.01       99.90
         20 |          1        0.01       99.91
         22 |          1        0.01       99.92
         25 |          2        0.02       99.94
         43 |          1        0.01       99.95
         52 |          1        0.01       99.96
         53 |          1        0.01       99.97
         54 |          1        0.01       99.98
         92 |          1        0.01       99.99
         93 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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