Frequencies for first 10,000 rows of pct012d086 variable in sf12010880us23 dataset :

   83 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,138       91.38       91.38
          1 |        466        4.66       96.04
          2 |        175        1.75       97.79
          3 |         80        0.80       98.59
          4 |         46        0.46       99.05
          5 |         24        0.24       99.29
          6 |         17        0.17       99.46
          7 |         16        0.16       99.62
          8 |          9        0.09       99.71
          9 |          7        0.07       99.78
         10 |          5        0.05       99.83
         11 |          2        0.02       99.85
         13 |          2        0.02       99.87
         14 |          2        0.02       99.89
         15 |          2        0.02       99.91
         16 |          1        0.01       99.92
         24 |          1        0.01       99.93
         25 |          2        0.02       99.95
         34 |          1        0.01       99.96
         37 |          1        0.01       99.97
         39 |          1        0.01       99.98
         54 |          1        0.01       99.99
         78 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017