Frequencies for first 10,000 rows of pct012k153 variable in sf12010860us30 dataset :

   46 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,619       86.19       86.19
          1 |        999        9.99       96.18
          2 |        229        2.29       98.47
          3 |         89        0.89       99.36
          4 |         29        0.29       99.65
          5 |          7        0.07       99.72
          6 |          5        0.05       99.77
          7 |          3        0.03       99.80
          8 |          1        0.01       99.81
         10 |          3        0.03       99.84
         11 |          2        0.02       99.86
         12 |          1        0.01       99.87
         17 |          3        0.03       99.90
         20 |          2        0.02       99.92
         24 |          1        0.01       99.93
         26 |          1        0.01       99.94
         37 |          2        0.02       99.96
         40 |          1        0.01       99.97
         41 |          1        0.01       99.98
         59 |          1        0.01       99.99
         83 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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