Frequencies for first 10,000 rows of pct012n036 variable in sf12010860us33 dataset :

   33 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,089       90.89       90.89
          1 |        582        5.82       96.71
          2 |        165        1.65       98.36
          3 |         66        0.66       99.02
          4 |         27        0.27       99.29
          5 |         14        0.14       99.43
          6 |          9        0.09       99.52
          7 |          9        0.09       99.61
          8 |         10        0.10       99.71
          9 |          3        0.03       99.74
         10 |          5        0.05       99.79
         11 |          2        0.02       99.81
         12 |          4        0.04       99.85
         13 |          1        0.01       99.86
         14 |          1        0.01       99.87
         15 |          1        0.01       99.88
         18 |          1        0.01       99.89
         20 |          2        0.02       99.91
         21 |          1        0.01       99.92
         22 |          1        0.01       99.93
         23 |          1        0.01       99.94
         25 |          1        0.01       99.95
         26 |          1        0.01       99.96
         34 |          1        0.01       99.97
         37 |          1        0.01       99.98
         49 |          1        0.01       99.99
         56 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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