Frequencies for first 10,000 rows of pct012c157 variable in sf12010860us22 dataset :

   50 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,275       82.75       82.75
          1 |      1,117       11.17       93.92
          2 |        323        3.23       97.15
          3 |        135        1.35       98.50
          4 |         54        0.54       99.04
          5 |         30        0.30       99.34
          6 |         22        0.22       99.56
          7 |          6        0.06       99.62
          8 |         13        0.13       99.75
          9 |          5        0.05       99.80
         10 |          6        0.06       99.86
         11 |          1        0.01       99.87
         12 |          2        0.02       99.89
         14 |          1        0.01       99.90
         23 |          1        0.01       99.91
         27 |          1        0.01       99.92
         31 |          2        0.02       99.94
         34 |          1        0.01       99.95
         37 |          1        0.01       99.96
         53 |          1        0.01       99.97
         58 |          1        0.01       99.98
         78 |          1        0.01       99.99
         82 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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