Frequencies for first 10,000 rows of pct013e008 variable in sf12010860us35 dataset :

   20 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,659       96.59       96.59
          1 |        279        2.79       99.38
          2 |         45        0.45       99.83
          3 |          9        0.09       99.92
          4 |          5        0.05       99.97
          5 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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