Frequencies for first 10,000 rows of pct012e087 variable in sf12010860us24 dataset :

   84 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,989       99.89       99.89
          1 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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