Frequencies for first 10,000 rows of pct012e143 variable in sf12010860us24 dataset :

   36 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,693       96.93       96.93
          1 |        257        2.57       99.50
          2 |         46        0.46       99.96
          3 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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