Frequencies for first 10,000 rows of dfagerpt variable in natlterr1996 dataset :

   Reported |
     Age of |
     Father |      Freq.     Percent        Cum.
------------+-----------------------------------
         15 |          1        0.01        0.01
         16 |          1        0.01        0.02
         17 |          1        0.01        0.03
         18 |          5        0.05        0.08
         19 |          5        0.05        0.13
         20 |         12        0.12        0.25
         21 |          6        0.06        0.31
         22 |          9        0.09        0.40
         23 |          8        0.08        0.48
         24 |         13        0.13        0.61
         25 |          7        0.07        0.68
         26 |          4        0.04        0.72
         27 |          5        0.05        0.77
         28 |          6        0.06        0.83
         29 |          5        0.05        0.88
         30 |          6        0.06        0.94
         31 |          4        0.04        0.98
         32 |          3        0.03        1.01
         33 |          3        0.03        1.04
         34 |          2        0.02        1.06
         35 |          4        0.04        1.10
         37 |          4        0.04        1.14
         38 |          4        0.04        1.18
         39 |          1        0.01        1.19
         42 |          1        0.01        1.20
         43 |          1        0.01        1.21
         48 |          2        0.02        1.23
         49 |          1        0.01        1.24
         50 |          2        0.02        1.26
         57 |          1        0.01        1.27
         99 |      9,873       98.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015