Frequencies for first 10,000 rows of pct012e155 variable in sf12010860us24 dataset :

   48 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,751       97.51       97.51
          1 |        219        2.19       99.70
          2 |         22        0.22       99.92
          3 |          5        0.05       99.97
          4 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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