Frequencies for first 10,000 rows of pct012n193 variable in sf12010880us33 dataset :

   86 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,918       99.18       99.18
          1 |         65        0.65       99.83
          2 |         10        0.10       99.93
          3 |          2        0.02       99.95
          4 |          4        0.04       99.99
         12 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017