Frequencies for first 10,000 rows of pct012k037 variable in sf12000860us26 dataset :

   34 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,773       87.73       87.73
          1 |        909        9.09       96.82
          2 |        214        2.14       98.96
          3 |         50        0.50       99.46
          4 |         16        0.16       99.62
          5 |         13        0.13       99.75
          6 |          5        0.05       99.80
          7 |          3        0.03       99.83
          8 |          2        0.02       99.85
         12 |          2        0.02       99.87
         13 |          1        0.01       99.88
         14 |          2        0.02       99.90
         16 |          1        0.01       99.91
         17 |          1        0.01       99.92
         19 |          1        0.01       99.93
         24 |          1        0.01       99.94
         35 |          1        0.01       99.95
         41 |          1        0.01       99.96
         45 |          1        0.01       99.97
         53 |          1        0.01       99.98
         69 |          1        0.01       99.99
         73 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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