Frequencies for first 10,000 rows of pct012n138 variable in sf12010860us33 dataset :

   31 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,989       89.89       89.89
          1 |        616        6.16       96.05
          2 |        191        1.91       97.96
          3 |         78        0.78       98.74
          4 |         37        0.37       99.11
          5 |         29        0.29       99.40
          6 |         11        0.11       99.51
          7 |         11        0.11       99.62
          8 |          4        0.04       99.66
          9 |          9        0.09       99.75
         10 |          4        0.04       99.79
         11 |          1        0.01       99.80
         12 |          3        0.03       99.83
         14 |          3        0.03       99.86
         15 |          2        0.02       99.88
         16 |          1        0.01       99.89
         17 |          3        0.03       99.92
         20 |          1        0.01       99.93
         22 |          1        0.01       99.94
         26 |          1        0.01       99.95
         29 |          1        0.01       99.96
         32 |          1        0.01       99.97
         33 |          1        0.01       99.98
         43 |          1        0.01       99.99
         54 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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