Frequencies for first 10,000 rows of pct012e166 variable in sf12000860us20 dataset :

   59 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,899       98.99       98.99
          1 |         98        0.98       99.97
          2 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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