Frequencies for first 10,000 rows of pct012c196 variable in sf12010860us22 dataset :

   89 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,845       98.45       98.45
          1 |        135        1.35       99.80
          2 |         12        0.12       99.92
          3 |          2        0.02       99.94
          4 |          4        0.04       99.98
          5 |          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