Frequencies for first 10,000 rows of pct012k197 variable in sf12000860us26 dataset :

   90 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,927       99.27       99.27
          1 |         66        0.66       99.93
          2 |          6        0.06       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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