Frequencies for first 10,000 rows of pct012d092 variable in sf12010860us23 dataset :

   89 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,462       94.62       94.62
          1 |        376        3.76       98.38
          2 |         92        0.92       99.30
          3 |         29        0.29       99.59
          4 |         13        0.13       99.72
          5 |          7        0.07       99.79
          6 |          7        0.07       99.86
          7 |          2        0.02       99.88
          8 |          2        0.02       99.90
          9 |          3        0.03       99.93
         10 |          2        0.02       99.95
         12 |          2        0.02       99.97
         24 |          1        0.01       99.98
         31 |          1        0.01       99.99
         40 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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