Frequencies for first 10,000 rows of pct012e153 variable in sf12000860us20 dataset :

   46 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,785       97.85       97.85
          1 |        194        1.94       99.79
          2 |         17        0.17       99.96
          3 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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