Frequencies for first 10,000 rows of pct012e046 variable in sf12010860us24 dataset :

   43 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,758       97.58       97.58
          1 |        217        2.17       99.75
          2 |         20        0.20       99.95
          3 |          3        0.03       99.98
          4 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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