Frequencies for first 10,000 rows of pct012n184 variable in sf12010860us33 dataset :

   77 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,804       98.04       98.04
          1 |        154        1.54       99.58
          2 |         23        0.23       99.81
          3 |         10        0.10       99.91
          4 |          2        0.02       99.93
          5 |          2        0.02       99.95
          6 |          1        0.01       99.96
          7 |          1        0.01       99.97
          9 |          2        0.02       99.99
         12 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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