Frequencies for first 10,000 rows of pct012k126 variable in sf12010860us30 dataset :

   19 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,809       88.09       88.09
          1 |        827        8.27       96.36
          2 |        192        1.92       98.28
          3 |         76        0.76       99.04
          4 |         42        0.42       99.46
          5 |         21        0.21       99.67
          6 |         10        0.10       99.77
          7 |          1        0.01       99.78
          8 |          3        0.03       99.81
          9 |          3        0.03       99.84
         10 |          1        0.01       99.85
         11 |          1        0.01       99.86
         14 |          2        0.02       99.88
         17 |          1        0.01       99.89
         18 |          1        0.01       99.90
         20 |          1        0.01       99.91
         24 |          1        0.01       99.92
         29 |          1        0.01       99.93
         34 |          1        0.01       99.94
         38 |          1        0.01       99.95
         39 |          1        0.01       99.96
         51 |          1        0.01       99.97
         55 |          1        0.01       99.98
         80 |          1        0.01       99.99
        100 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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