Frequencies for first 10,000 rows of pct012o069 variable in sf12010860us34 dataset :

   66 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,263       82.63       82.63
          1 |      1,215       12.15       94.78
          2 |        343        3.43       98.21
          3 |        109        1.09       99.30
          4 |         31        0.31       99.61
          5 |         21        0.21       99.82
          6 |          8        0.08       99.90
          7 |          4        0.04       99.94
          8 |          1        0.01       99.95
          9 |          2        0.02       99.97
         11 |          1        0.01       99.98
         14 |          1        0.01       99.99
         19 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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