Frequencies for first 10,000 rows of pct012m145 variable in sf12010860us32 dataset :

   38 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,767       97.67       97.67
          1 |        209        2.09       99.76
          2 |         18        0.18       99.94
          3 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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