Frequencies for first 10,000 rows of pct012c129 variable in sf12010860us22 dataset :

   22 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,482       84.82       84.82
          1 |        903        9.03       93.85
          2 |        291        2.91       96.76
          3 |        122        1.22       97.98
          4 |         80        0.80       98.78
          5 |         38        0.38       99.16
          6 |         32        0.32       99.48
          7 |          6        0.06       99.54
          8 |         11        0.11       99.65
          9 |         10        0.10       99.75
         10 |          2        0.02       99.77
         11 |          3        0.03       99.80
         12 |          1        0.01       99.81
         13 |          3        0.03       99.84
         14 |          1        0.01       99.85
         17 |          3        0.03       99.88
         18 |          2        0.02       99.90
         19 |          1        0.01       99.91
         21 |          1        0.01       99.92
         25 |          1        0.01       99.93
         37 |          1        0.01       99.94
         38 |          1        0.01       99.95
         42 |          1        0.01       99.96
         48 |          1        0.01       99.97
         53 |          1        0.01       99.98
         60 |          1        0.01       99.99
         82 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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