Frequencies for first 10,000 rows of pct012k122 variable in sf12000860us26 dataset :

   15 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,907       89.07       89.07
          1 |        805        8.05       97.12
          2 |        178        1.78       98.90
          3 |         42        0.42       99.32
          4 |         22        0.22       99.54
          5 |         13        0.13       99.67
          6 |          8        0.08       99.75
          7 |          3        0.03       99.78
          8 |          1        0.01       99.79
          9 |          5        0.05       99.84
         10 |          1        0.01       99.85
         11 |          2        0.02       99.87
         12 |          1        0.01       99.88
         15 |          1        0.01       99.89
         17 |          1        0.01       99.90
         20 |          1        0.01       99.91
         23 |          1        0.01       99.92
         26 |          1        0.01       99.93
         27 |          1        0.01       99.94
         35 |          1        0.01       99.95
         47 |          1        0.01       99.96
         54 |          1        0.01       99.97
         64 |          1        0.01       99.98
         84 |          1        0.01       99.99
         95 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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