Frequencies for first 10,000 rows of pct012c082 variable in sf12010860us22 dataset :

   79 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,703       97.03       97.03
          1 |        253        2.53       99.56
          2 |         30        0.30       99.86
          3 |          5        0.05       99.91
          4 |          4        0.04       99.95
          5 |          1        0.01       99.96
          7 |          2        0.02       99.98
         13 |          1        0.01       99.99
         17 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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