Frequencies for first 10,000 rows of pct012c124 variable in sf12000860us18 dataset :

   17 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,632       86.32       86.32
          1 |        946        9.46       95.78
          2 |        228        2.28       98.06
          3 |         80        0.80       98.86
          4 |         45        0.45       99.31
          5 |         14        0.14       99.45
          6 |         16        0.16       99.61
          7 |         11        0.11       99.72
          8 |         11        0.11       99.83
          9 |          2        0.02       99.85
         11 |          1        0.01       99.86
         12 |          1        0.01       99.87
         14 |          1        0.01       99.88
         16 |          2        0.02       99.90
         27 |          1        0.01       99.91
         31 |          1        0.01       99.92
         34 |          1        0.01       99.93
         35 |          1        0.01       99.94
         45 |          1        0.01       99.95
         49 |          1        0.01       99.96
         55 |          1        0.01       99.97
         59 |          1        0.01       99.98
         84 |          1        0.01       99.99
         87 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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