Frequencies for first 10,000 rows of pct012f197 variable in sf12000860us21 dataset :

   90 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,714       97.14       97.14
          1 |        191        1.91       99.05
          2 |         46        0.46       99.51
          3 |         23        0.23       99.74
          4 |         10        0.10       99.84
          5 |          6        0.06       99.90
          6 |          3        0.03       99.93
          7 |          4        0.04       99.97
          8 |          1        0.01       99.98
          9 |          1        0.01       99.99
         11 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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