Frequencies for first 10,000 rows of pct012k079 variable in sf12010860us30 dataset :

   76 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,694       96.94       96.94
          1 |        259        2.59       99.53
          2 |         30        0.30       99.83
          3 |          5        0.05       99.88
          4 |          3        0.03       99.91
          5 |          1        0.01       99.92
          8 |          1        0.01       99.93
          9 |          4        0.04       99.97
         10 |          1        0.01       99.98
         11 |          1        0.01       99.99
         18 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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