Frequencies for first 10,000 rows of pct012e141 variable in sf12010860us24 dataset :

   34 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,672       96.72       96.72
          1 |        291        2.91       99.63
          2 |         30        0.30       99.93
          3 |          4        0.04       99.97
          4 |          2        0.02       99.99
          9 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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