Frequencies for first 10,000 rows of pct012n092 variable in sf12010860us33 dataset :

   89 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,969       99.69       99.69
          1 |         25        0.25       99.94
          2 |          4        0.04       99.98
          4 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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