Frequencies for first 10,000 rows of pct012n086 variable in sf12010860us33 dataset :

   83 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,918       99.18       99.18
          1 |         66        0.66       99.84
          2 |         12        0.12       99.96
          3 |          2        0.02       99.98
          4 |          1        0.01       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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