Frequencies for first 10,000 rows of pct012e060 variable in sf12010860us24 dataset :

   57 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,816       98.16       98.16
          1 |        173        1.73       99.89
          2 |         10        0.10       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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