Frequencies for first 10,000 rows of pct012k063 variable in sf12000860us26 dataset :

   60 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,349       93.49       93.49
          1 |        530        5.30       98.79
          2 |         88        0.88       99.67
          3 |         13        0.13       99.80
          4 |          2        0.02       99.82
          5 |          4        0.04       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