Frequencies for first 10,000 rows of pct012f082 variable in sf12010860us25 dataset :

   79 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,206       92.06       92.06
          1 |        445        4.45       96.51
          2 |        136        1.36       97.87
          3 |         61        0.61       98.48
          4 |         38        0.38       98.86
          5 |         33        0.33       99.19
          6 |         17        0.17       99.36
          7 |         12        0.12       99.48
          8 |          9        0.09       99.57
          9 |         11        0.11       99.68
         10 |          3        0.03       99.71
         11 |          4        0.04       99.75
         12 |          9        0.09       99.84
         13 |          3        0.03       99.87
         14 |          2        0.02       99.89
         15 |          1        0.01       99.90
         16 |          1        0.01       99.91
         17 |          3        0.03       99.94
         18 |          2        0.02       99.96
         20 |          2        0.02       99.98
         23 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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