Frequencies for first 10,000 rows of pct012o066 variable in sf12010860us34 dataset :

   63 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,904       79.04       79.04
          1 |      1,377       13.77       92.81
          2 |        412        4.12       96.93
          3 |        176        1.76       98.69
          4 |         65        0.65       99.34
          5 |         30        0.30       99.64
          6 |         15        0.15       99.79
          7 |          5        0.05       99.84
          8 |          4        0.04       99.88
          9 |          4        0.04       99.92
         10 |          3        0.03       99.95
         11 |          2        0.02       99.97
         13 |          1        0.01       99.98
         22 |          1        0.01       99.99
         28 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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