Frequencies for first 10,000 rows of pct012n191 variable in sf12010860us33 dataset :

   84 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,874       98.74       98.74
          1 |        105        1.05       99.79
          2 |         12        0.12       99.91
          3 |          4        0.04       99.95
          4 |          3        0.03       99.98
          5 |          1        0.01       99.99
          6 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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