Frequencies for first 10,000 rows of pct012e049 variable in sf12010860us24 dataset :

   46 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,737       97.37       97.37
          1 |        237        2.37       99.74
          2 |         22        0.22       99.96
          3 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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