Frequencies for first 10,000 rows of pct012c063 variable in sf12000860us18 dataset :

   60 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,242       92.42       92.42
          1 |        592        5.92       98.34
          2 |        119        1.19       99.53
          3 |         23        0.23       99.76
          4 |          4        0.04       99.80
          5 |          6        0.06       99.86
          6 |          1        0.01       99.87
          7 |          3        0.03       99.90
          8 |          1        0.01       99.91
         10 |          2        0.02       99.93
         11 |          2        0.02       99.95
         15 |          1        0.01       99.96
         17 |          1        0.01       99.97
         24 |          1        0.01       99.98
         34 |          1        0.01       99.99
         40 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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