Frequencies for first 10,000 rows of pct012l197 variable in sf12000860us27 dataset :

   90 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,671       96.71       96.71
          1 |        254        2.54       99.25
          2 |         41        0.41       99.66
          3 |         15        0.15       99.81
          4 |          6        0.06       99.87
          5 |          4        0.04       99.91
          6 |          4        0.04       99.95
          8 |          1        0.01       99.96
         11 |          1        0.01       99.97
         13 |          1        0.01       99.98
         16 |          1        0.01       99.99
         32 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017