Frequencies for first 10,000 rows of pct012c086 variable in sf12000860us18 dataset :

   83 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,888       98.88       98.88
          1 |        103        1.03       99.91
          2 |          4        0.04       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