Frequencies for first 10,000 rows of PCT012B201 variable in sf12000860us17 dataset :

   94 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,686       86.86       86.86
          1 |        671        6.71       93.57
          2 |        255        2.55       96.12
          3 |        137        1.37       97.49
          4 |         75        0.75       98.24
          5 |         50        0.50       98.74
          6 |         22        0.22       98.96
          7 |         28        0.28       99.24
          8 |         11        0.11       99.35
          9 |         10        0.10       99.45
         10 |          9        0.09       99.54
         11 |          5        0.05       99.59
         12 |          9        0.09       99.68
         13 |          6        0.06       99.74
         14 |          4        0.04       99.78
         15 |          6        0.06       99.84
         16 |          2        0.02       99.86
         17 |          3        0.03       99.89
         18 |          4        0.04       99.93
         19 |          4        0.04       99.97
         20 |          1        0.01       99.98
         22 |          1        0.01       99.99
         30 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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