Frequencies for first 10,000 rows of pct012k038 variable in sf12000860us26 dataset :

   35 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,683       86.83       86.83
          1 |        967        9.67       96.50
          2 |        223        2.23       98.73
          3 |         62        0.62       99.35
          4 |         33        0.33       99.68
          5 |          5        0.05       99.73
          6 |          6        0.06       99.79
          7 |          3        0.03       99.82
          8 |          1        0.01       99.83
          9 |          2        0.02       99.85
         10 |          1        0.01       99.86
         11 |          2        0.02       99.88
         12 |          1        0.01       99.89
         13 |          1        0.01       99.90
         14 |          1        0.01       99.91
         16 |          1        0.01       99.92
         20 |          1        0.01       99.93
         26 |          1        0.01       99.94
         28 |          1        0.01       99.95
         39 |          1        0.01       99.96
         41 |          1        0.01       99.97
         64 |          1        0.01       99.98
         67 |          1        0.01       99.99
         69 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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