Frequencies for first 10,000 rows of pct012l198 variable in sf12000860us27 dataset :

   91 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,761       97.61       97.61
          1 |        182        1.82       99.43
          2 |         27        0.27       99.70
          3 |         16        0.16       99.86
          4 |          4        0.04       99.90
          5 |          2        0.02       99.92
          6 |          1        0.01       99.93
          7 |          1        0.01       99.94
          8 |          3        0.03       99.97
         10 |          1        0.01       99.98
         11 |          1        0.01       99.99
         23 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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