Frequencies for first 10,000 rows of pct012n041 variable in sf12010880us33 dataset :

   38 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,242       92.42       92.42
          1 |        479        4.79       97.21
          2 |        131        1.31       98.52
          3 |         48        0.48       99.00
          4 |         27        0.27       99.27
          5 |         18        0.18       99.45
          6 |         13        0.13       99.58
          7 |          7        0.07       99.65
          8 |          1        0.01       99.66
          9 |         12        0.12       99.78
         10 |          5        0.05       99.83
         11 |          2        0.02       99.85
         12 |          2        0.02       99.87
         13 |          1        0.01       99.88
         14 |          1        0.01       99.89
         16 |          2        0.02       99.91
         18 |          2        0.02       99.93
         22 |          2        0.02       99.95
         25 |          1        0.01       99.96
         36 |          1        0.01       99.97
         38 |          1        0.01       99.98
         45 |          1        0.01       99.99
         47 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017