Frequencies for first 10,000 rows of ufagecomb variable in natlterr2007 dataset :

   Father's |
   Combined |
      Age U |      Freq.     Percent        Cum.
------------+-----------------------------------
         15 |          6        0.06        0.06
         16 |         26        0.26        0.32
         17 |         57        0.57        0.89
         18 |        127        1.27        2.16
         19 |        215        2.15        4.31
         20 |        301        3.01        7.32
         21 |        324        3.24       10.56
         22 |        379        3.79       14.35
         23 |        392        3.92       18.27
         24 |        393        3.93       22.20
         25 |        465        4.65       26.85
         26 |        492        4.92       31.77
         27 |        420        4.20       35.97
         28 |        428        4.28       40.25
         29 |        413        4.13       44.38
         30 |        440        4.40       48.78
         31 |        409        4.09       52.87
         32 |        352        3.52       56.39
         33 |        365        3.65       60.04
         34 |        342        3.42       63.46
         35 |        312        3.12       66.58
         36 |        306        3.06       69.64
         37 |        269        2.69       72.33
         38 |        198        1.98       74.31
         39 |        183        1.83       76.14
         40 |        145        1.45       77.59
         41 |        121        1.21       78.80
         42 |        124        1.24       80.04
         43 |         86        0.86       80.90
         44 |         98        0.98       81.88
         45 |         68        0.68       82.56
         46 |         50        0.50       83.06
         47 |         48        0.48       83.54
         48 |         41        0.41       83.95
         49 |         19        0.19       84.14
         50 |         27        0.27       84.41
         51 |         18        0.18       84.59
         52 |         11        0.11       84.70
         53 |         15        0.15       84.85
         54 |         17        0.17       85.02
         55 |          8        0.08       85.10
         56 |          4        0.04       85.14
         57 |          5        0.05       85.19
         58 |          7        0.07       85.26
         59 |          2        0.02       85.28
         60 |          3        0.03       85.31
         61 |          3        0.03       85.34
         62 |          3        0.03       85.37
         63 |          1        0.01       85.38
         64 |          2        0.02       85.40
         65 |          5        0.05       85.45
         69 |          2        0.02       85.47
         71 |          2        0.02       85.49
         74 |          1        0.01       85.50
         78 |          1        0.01       85.51
         99 |      1,449       14.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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