Frequencies for first 10,000 rows of pct012e024 variable in sf12010860us24 dataset :

   21 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,576       95.76       95.76
          1 |        343        3.43       99.19
          2 |         54        0.54       99.73
          3 |         19        0.19       99.92
          4 |          3        0.03       99.95
          6 |          3        0.03       99.98
          8 |          1        0.01       99.99
         10 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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