Frequencies for first 10,000 rows of pct012n069 variable in sf12010860us33 dataset :

   66 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,709       97.09       97.09
          1 |        243        2.43       99.52
          2 |         28        0.28       99.80
          3 |         11        0.11       99.91
          5 |          3        0.03       99.94
          6 |          2        0.02       99.96
          8 |          1        0.01       99.97
          9 |          2        0.02       99.99
         10 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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