Frequencies for first 10,000 rows of pct012c053 variable in sf12000860us18 dataset :

   50 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,673       86.73       86.73
          1 |        984        9.84       96.57
          2 |        212        2.12       98.69
          3 |         68        0.68       99.37
          4 |         25        0.25       99.62
          5 |         12        0.12       99.74
          6 |          3        0.03       99.77
          7 |          7        0.07       99.84
          8 |          1        0.01       99.85
          9 |          4        0.04       99.89
         10 |          1        0.01       99.90
         11 |          1        0.01       99.91
         15 |          1        0.01       99.92
         21 |          1        0.01       99.93
         24 |          1        0.01       99.94
         30 |          2        0.02       99.96
         34 |          1        0.01       99.97
         47 |          1        0.01       99.98
         48 |          1        0.01       99.99
         49 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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