Frequencies for first 10,000 rows of pct012k024 variable in sf12000860us26 dataset :

   21 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,888       88.88       88.88
          1 |        795        7.95       96.83
          2 |        183        1.83       98.66
          3 |         59        0.59       99.25
          4 |         23        0.23       99.48
          5 |         11        0.11       99.59
          6 |         13        0.13       99.72
          7 |          4        0.04       99.76
          8 |          6        0.06       99.82
         12 |          2        0.02       99.84
         13 |          1        0.01       99.85
         14 |          1        0.01       99.86
         15 |          1        0.01       99.87
         16 |          1        0.01       99.88
         18 |          3        0.03       99.91
         22 |          1        0.01       99.92
         32 |          2        0.02       99.94
         34 |          1        0.01       99.95
         35 |          1        0.01       99.96
         53 |          1        0.01       99.97
         58 |          1        0.01       99.98
         60 |          1        0.01       99.99
         70 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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