Frequencies for first 10,000 rows of ufagecomb variable in natlterr2010 dataset :

   Father's |
   Combined |
      Age U |      Freq.     Percent        Cum.
------------+-----------------------------------
         14 |          1        0.01        0.01
         15 |          7        0.07        0.08
         16 |         25        0.25        0.33
         17 |         60        0.60        0.93
         18 |        143        1.43        2.36
         19 |        247        2.47        4.83
         20 |        314        3.14        7.97
         21 |        361        3.61       11.58
         22 |        368        3.68       15.26
         23 |        440        4.40       19.66
         24 |        436        4.36       24.02
         25 |        414        4.14       28.16
         26 |        373        3.73       31.89
         27 |        448        4.48       36.37
         28 |        407        4.07       40.44
         29 |        416        4.16       44.60
         30 |        428        4.28       48.88
         31 |        343        3.43       52.31
         32 |        343        3.43       55.74
         33 |        347        3.47       59.21
         34 |        342        3.42       62.63
         35 |        274        2.74       65.37
         36 |        281        2.81       68.18
         37 |        257        2.57       70.75
         38 |        225        2.25       73.00
         39 |        187        1.87       74.87
         40 |        167        1.67       76.54
         41 |        134        1.34       77.88
         42 |        105        1.05       78.93
         43 |        108        1.08       80.01
         44 |         78        0.78       80.79
         45 |         70        0.70       81.49
         46 |         72        0.72       82.21
         47 |         52        0.52       82.73
         48 |         36        0.36       83.09
         49 |         27        0.27       83.36
         50 |         28        0.28       83.64
         51 |         15        0.15       83.79
         52 |         20        0.20       83.99
         53 |          5        0.05       84.04
         54 |         12        0.12       84.16
         55 |          8        0.08       84.24
         56 |         14        0.14       84.38
         57 |          6        0.06       84.44
         58 |          5        0.05       84.49
         59 |          5        0.05       84.54
         60 |          4        0.04       84.58
         61 |          2        0.02       84.60
         62 |          2        0.02       84.62
         63 |          2        0.02       84.64
         64 |          1        0.01       84.65
         65 |          1        0.01       84.66
         68 |          1        0.01       84.67
         69 |          2        0.02       84.69
         70 |          1        0.01       84.70
         75 |          1        0.01       84.71
         99 |      1,529       15.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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