Frequencies for first 10,000 rows of pct012o175 variable in sf12010860us34 dataset :

   68 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,329       83.29       83.29
          1 |      1,143       11.43       94.72
          2 |        322        3.22       97.94
          3 |        115        1.15       99.09
          4 |         53        0.53       99.62
          5 |         15        0.15       99.77
          6 |         12        0.12       99.89
          7 |          3        0.03       99.92
          8 |          2        0.02       99.94
          9 |          2        0.02       99.96
         12 |          1        0.01       99.97
         13 |          1        0.01       99.98
         16 |          1        0.01       99.99
         24 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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