Frequencies for first 10,000 rows of pct012k093 variable in sf12000860us26 dataset :

   90 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,959       99.59       99.59
          1 |         38        0.38       99.97
          2 |          2        0.02       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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