Frequencies for first 10,000 rows of pct012l199 variable in sf12000860us27 dataset :

   92 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,790       97.90       97.90
          1 |        164        1.64       99.54
          2 |         27        0.27       99.81
          3 |          8        0.08       99.89
          4 |          6        0.06       99.95
          5 |          1        0.01       99.96
          8 |          1        0.01       99.97
         10 |          1        0.01       99.98
         15 |          1        0.01       99.99
         17 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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