Frequencies for first 10,000 rows of pct012e175 variable in sf12010880us24 dataset :

   68 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,940       99.40       99.40
          1 |         54        0.54       99.94
          2 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017