Frequencies for first 10,000 rows of pct012c077 variable in sf12010860us22 dataset :

   74 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,499       94.99       94.99
          1 |        399        3.99       98.98
          2 |         68        0.68       99.66
          3 |         18        0.18       99.84
          4 |          4        0.04       99.88
          5 |          1        0.01       99.89
          6 |          3        0.03       99.92
          8 |          2        0.02       99.94
          9 |          2        0.02       99.96
         11 |          1        0.01       99.97
         17 |          1        0.01       99.98
         18 |          1        0.01       99.99
         26 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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