Frequencies for first 10,000 rows of pct012k147 variable in sf12000860us26 dataset :

   40 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,665       86.65       86.65
          1 |        947        9.47       96.12
          2 |        229        2.29       98.41
          3 |         79        0.79       99.20
          4 |         32        0.32       99.52
          5 |         15        0.15       99.67
          6 |          9        0.09       99.76
          7 |          5        0.05       99.81
          8 |          2        0.02       99.83
          9 |          2        0.02       99.85
         12 |          1        0.01       99.86
         13 |          2        0.02       99.88
         15 |          2        0.02       99.90
         27 |          2        0.02       99.92
         29 |          1        0.01       99.93
         35 |          1        0.01       99.94
         40 |          1        0.01       99.95
         46 |          1        0.01       99.96
         47 |          1        0.01       99.97
         56 |          1        0.01       99.98
         72 |          1        0.01       99.99
         82 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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