Frequencies for first 10,000 rows of pct012e140 variable in sf12010860us24 dataset :

   33 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,688       96.88       96.88
          1 |        269        2.69       99.57
          2 |         35        0.35       99.92
          3 |          5        0.05       99.97
          4 |          2        0.02       99.99
          6 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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