Frequencies for first 10,000 rows of pct012k086 variable in sf12010860us30 dataset :

   83 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,850       98.50       98.50
          1 |        132        1.32       99.82
          2 |          8        0.08       99.90
          3 |          2        0.02       99.92
          4 |          3        0.03       99.95
          5 |          3        0.03       99.98
          6 |          1        0.01       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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