Frequencies for first 10,000 rows of pct012g063 variable in sf12000860us22 dataset :

   60 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,996       79.96       79.96
          1 |      1,129       11.29       91.25
          2 |        369        3.69       94.94
          3 |        156        1.56       96.50
          4 |        105        1.05       97.55
          5 |         53        0.53       98.08
          6 |         37        0.37       98.45
          7 |         26        0.26       98.71
          8 |         29        0.29       99.00
          9 |         15        0.15       99.15
         10 |         19        0.19       99.34
         11 |         11        0.11       99.45
         12 |         11        0.11       99.56
         13 |          7        0.07       99.63
         14 |          5        0.05       99.68
         15 |          5        0.05       99.73
         16 |          6        0.06       99.79
         17 |          7        0.07       99.86
         18 |          1        0.01       99.87
         19 |          2        0.02       99.89
         20 |          1        0.01       99.90
         21 |          5        0.05       99.95
         22 |          1        0.01       99.96
         25 |          1        0.01       99.97
         26 |          1        0.01       99.98
         31 |          1        0.01       99.99
         33 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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