Frequencies for first 10,000 rows of pct012e149 variable in sf12010860us24 dataset :

   42 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,732       97.32       97.32
          1 |        235        2.35       99.67
          2 |         27        0.27       99.94
          3 |          4        0.04       99.98
          4 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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