Frequencies for first 10,000 rows of pct012g066 variable in sf12000860us22 dataset :

   63 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,259       82.59       82.59
          1 |      1,038       10.38       92.97
          2 |        325        3.25       96.22
          3 |        136        1.36       97.58
          4 |         68        0.68       98.26
          5 |         34        0.34       98.60
          6 |         34        0.34       98.94
          7 |         25        0.25       99.19
          8 |         12        0.12       99.31
          9 |         11        0.11       99.42
         10 |         11        0.11       99.53
         11 |          6        0.06       99.59
         12 |          8        0.08       99.67
         13 |          6        0.06       99.73
         14 |          9        0.09       99.82
         15 |          5        0.05       99.87
         16 |          2        0.02       99.89
         17 |          3        0.03       99.92
         18 |          4        0.04       99.96
         20 |          1        0.01       99.97
         21 |          1        0.01       99.98
         23 |          1        0.01       99.99
         37 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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