Frequencies for first 10,000 rows of pct012e064 variable in sf12010880us24 dataset :

   61 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,898       98.98       98.98
          1 |         99        0.99       99.97
          2 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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