Frequencies for first 10,000 rows of pct012e051 variable in sf12010860us24 dataset :

   48 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,773       97.73       97.73
          1 |        206        2.06       99.79
          2 |         16        0.16       99.95
          3 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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