Frequencies for first 10,000 rows of pct012k086 variable in sf12000860us26 dataset :

   83 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,903       99.03       99.03
          1 |         89        0.89       99.92
          2 |          3        0.03       99.95
          3 |          1        0.01       99.96
          4 |          1        0.01       99.97
          5 |          2        0.02       99.99
          6 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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