Frequencies for first 10,000 rows of pct012c020 variable in sf12010860us22 dataset :

   17 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,217       82.17       82.17
          1 |      1,122       11.22       93.39
          2 |        342        3.42       96.81
          3 |        140        1.40       98.21
          4 |         58        0.58       98.79
          5 |         26        0.26       99.05
          6 |         23        0.23       99.28
          7 |         16        0.16       99.44
          8 |         11        0.11       99.55
          9 |          3        0.03       99.58
         10 |         12        0.12       99.70
         11 |          6        0.06       99.76
         12 |          4        0.04       99.80
         13 |          3        0.03       99.83
         14 |          2        0.02       99.85
         16 |          1        0.01       99.86
         17 |          1        0.01       99.87
         21 |          2        0.02       99.89
         30 |          1        0.01       99.90
         31 |          1        0.01       99.91
         32 |          1        0.01       99.92
         35 |          1        0.01       99.93
         36 |          1        0.01       99.94
         48 |          1        0.01       99.95
         58 |          1        0.01       99.96
         65 |          1        0.01       99.97
         76 |          1        0.01       99.98
         83 |          1        0.01       99.99
         86 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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