Frequencies for first 10,000 rows of pct012e171 variable in sf12010880us24 dataset :

   64 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,914       99.14       99.14
          1 |         80        0.80       99.94
          2 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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