Frequencies for first 10,000 rows of pct012e022 variable in sf12010860us24 dataset :

   19 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,596       95.96       95.96
          1 |        325        3.25       99.21
          2 |         56        0.56       99.77
          3 |         11        0.11       99.88
          4 |          5        0.05       99.93
          5 |          3        0.03       99.96
          7 |          1        0.01       99.97
          8 |          1        0.01       99.98
          9 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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