Frequencies for first 10,000 rows of pct012m197 variable in sf12010860us32 dataset :

   90 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,994       99.94       99.94
          1 |          4        0.04       99.98
          3 |          1        0.01       99.99
          4 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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