Frequencies for first 10,000 rows of pct012f092 variable in sf12000860us21 dataset :

   89 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,798       97.98       97.98
          1 |        144        1.44       99.42
          2 |         36        0.36       99.78
          3 |         15        0.15       99.93
          4 |          5        0.05       99.98
          5 |          1        0.01       99.99
          8 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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