Frequencies for first 10,000 rows of pct012c088 variable in sf12000860us18 dataset :

   85 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,906       99.06       99.06
          1 |         84        0.84       99.90
          2 |          6        0.06       99.96
          3 |          3        0.03       99.99
          4 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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