Frequencies for first 10,000 rows of pct012e053 variable in sf12000860us20 dataset :

   50 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,832       98.32       98.32
          1 |        158        1.58       99.90
          2 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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