Frequencies for first 10,000 rows of pct012m049 variable in sf12010860us32 dataset :

   46 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,796       97.96       97.96
          1 |        189        1.89       99.85
          2 |         13        0.13       99.98
          3 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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