Frequencies for first 10,000 rows of pct012n126 variable in sf12000860us29 dataset :

   19 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,087       90.87       90.87
          1 |        568        5.68       96.55
          2 |        175        1.75       98.30
          3 |         60        0.60       98.90
          4 |         27        0.27       99.17
          5 |         16        0.16       99.33
          6 |         15        0.15       99.48
          7 |          9        0.09       99.57
          8 |          9        0.09       99.66
          9 |          5        0.05       99.71
         10 |          4        0.04       99.75
         11 |          2        0.02       99.77
         12 |          1        0.01       99.78
         14 |          1        0.01       99.79
         15 |          3        0.03       99.82
         17 |          3        0.03       99.85
         19 |          1        0.01       99.86
         20 |          1        0.01       99.87
         21 |          2        0.02       99.89
         22 |          1        0.01       99.90
         25 |          1        0.01       99.91
         26 |          1        0.01       99.92
         28 |          1        0.01       99.93
         44 |          1        0.01       99.94
         57 |          1        0.01       99.95
         60 |          1        0.01       99.96
         89 |          1        0.01       99.97
        121 |          1        0.01       99.98
        157 |          1        0.01       99.99
        165 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017