Frequencies for first 10,000 rows of pct012o067 variable in sf12010860us34 dataset :

   64 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,291       82.91       82.91
          1 |      1,162       11.62       94.53
          2 |        324        3.24       97.77
          3 |        118        1.18       98.95
          4 |         58        0.58       99.53
          5 |         23        0.23       99.76
          6 |         10        0.10       99.86
          7 |          4        0.04       99.90
          8 |          4        0.04       99.94
          9 |          3        0.03       99.97
         11 |          1        0.01       99.98
         14 |          1        0.01       99.99
         15 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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