Frequencies for first 10,000 rows of pct012k034 variable in sf12000860us26 dataset :

   31 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,786       87.86       87.86
          1 |        923        9.23       97.09
          2 |        181        1.81       98.90
          3 |         58        0.58       99.48
          4 |         15        0.15       99.63
          5 |         12        0.12       99.75
          6 |          3        0.03       99.78
          7 |          5        0.05       99.83
          8 |          3        0.03       99.86
         10 |          1        0.01       99.87
         11 |          2        0.02       99.89
         12 |          1        0.01       99.90
         15 |          1        0.01       99.91
         17 |          2        0.02       99.93
         18 |          1        0.01       99.94
         28 |          1        0.01       99.95
         36 |          1        0.01       99.96
         49 |          1        0.01       99.97
         52 |          1        0.01       99.98
         55 |          1        0.01       99.99
         62 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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