Frequencies for first 10,000 rows of pct012n078 variable in sf12000860us29 dataset :

   75 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,849       98.49       98.49
          1 |        125        1.25       99.74
          2 |         16        0.16       99.90
          3 |          8        0.08       99.98
          5 |          1        0.01       99.99
         15 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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