Frequencies for first 10,000 rows of pct012f081 variable in sf12010860us25 dataset :

   78 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,189       91.89       91.89
          1 |        451        4.51       96.40
          2 |        131        1.31       97.71
          3 |         66        0.66       98.37
          4 |         44        0.44       98.81
          5 |         19        0.19       99.00
          6 |         21        0.21       99.21
          7 |         11        0.11       99.32
          8 |         15        0.15       99.47
          9 |         11        0.11       99.58
         10 |          6        0.06       99.64
         11 |          8        0.08       99.72
         12 |          7        0.07       99.79
         13 |          6        0.06       99.85
         14 |          3        0.03       99.88
         15 |          6        0.06       99.94
         16 |          1        0.01       99.95
         17 |          1        0.01       99.96
         18 |          1        0.01       99.97
         21 |          1        0.01       99.98
         25 |          1        0.01       99.99
         27 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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