Frequencies for first 10,000 rows of pct012k082 variable in sf12000860us26 dataset :

   79 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,849       98.49       98.49
          1 |        131        1.31       99.80
          2 |         11        0.11       99.91
          3 |          5        0.05       99.96
          5 |          2        0.02       99.98
          6 |          1        0.01       99.99
         19 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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