Frequencies for first 10,000 rows of pct012e162 variable in sf12010860us24 dataset :

   55 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,786       97.86       97.86
          1 |        196        1.96       99.82
          2 |         15        0.15       99.97
          3 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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