Frequencies for first 10,000 rows of pct012e061 variable in sf12000860us20 dataset :

   58 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,879       98.79       98.79
          1 |        112        1.12       99.91
          2 |          8        0.08       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017