Frequencies for first 10,000 rows of pct012n039 variable in sf12010860us33 dataset :

   36 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,162       91.62       91.62
          1 |        531        5.31       96.93
          2 |        157        1.57       98.50
          3 |         58        0.58       99.08
          4 |         29        0.29       99.37
          5 |         17        0.17       99.54
          6 |          9        0.09       99.63
          7 |          7        0.07       99.70
          8 |          2        0.02       99.72
          9 |          4        0.04       99.76
         10 |          2        0.02       99.78
         11 |          3        0.03       99.81
         12 |          2        0.02       99.83
         13 |          3        0.03       99.86
         14 |          1        0.01       99.87
         15 |          5        0.05       99.92
         19 |          1        0.01       99.93
         22 |          1        0.01       99.94
         23 |          1        0.01       99.95
         27 |          1        0.01       99.96
         28 |          1        0.01       99.97
         30 |          2        0.02       99.99
         50 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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