Frequencies for first 10,000 rows of pct012m084 variable in sf12010860us32 dataset :

   81 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,980       99.80       99.80
          1 |         19        0.19       99.99
          2 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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