Frequencies for first 10,000 rows of pct012c129 variable in sf12000860us18 dataset :

   22 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,693       86.93       86.93
          1 |        835        8.35       95.28
          2 |        247        2.47       97.75
          3 |         90        0.90       98.65
          4 |         65        0.65       99.30
          5 |         21        0.21       99.51
          6 |         18        0.18       99.69
          7 |          5        0.05       99.74
          8 |          5        0.05       99.79
          9 |          4        0.04       99.83
         10 |          4        0.04       99.87
         11 |          1        0.01       99.88
         12 |          2        0.02       99.90
         18 |          1        0.01       99.91
         22 |          1        0.01       99.92
         29 |          1        0.01       99.93
         34 |          2        0.02       99.95
         39 |          1        0.01       99.96
         41 |          1        0.01       99.97
         51 |          1        0.01       99.98
         52 |          1        0.01       99.99
         91 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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