Frequencies for first 10,000 rows of pct012e148 variable in sf12000860us20 dataset :

   41 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,755       97.55       97.55
          1 |        224        2.24       99.79
          2 |         18        0.18       99.97
          3 |          2        0.02       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017