Frequencies for first 10,000 rows of ufagecomb variable in natlterr2009 dataset :

   Father's |
   Combined |
      Age U |      Freq.     Percent        Cum.
------------+-----------------------------------
          9 |          1        0.01        0.01
         12 |          1        0.01        0.02
         14 |          2        0.02        0.04
         15 |         15        0.15        0.19
         16 |         35        0.35        0.54
         17 |         80        0.80        1.34
         18 |        208        2.08        3.42
         19 |        283        2.83        6.25
         20 |        361        3.61        9.86
         21 |        438        4.38       14.24
         22 |        447        4.47       18.71
         23 |        462        4.62       23.33
         24 |        455        4.55       27.88
         25 |        449        4.49       32.37
         26 |        520        5.20       37.57
         27 |        495        4.95       42.52
         28 |        450        4.50       47.02
         29 |        443        4.43       51.45
         30 |        442        4.42       55.87
         31 |        422        4.22       60.09
         32 |        396        3.96       64.05
         33 |        313        3.13       67.18
         34 |        347        3.47       70.65
         35 |        273        2.73       73.38
         36 |        266        2.66       76.04
         37 |        200        2.00       78.04
         38 |        205        2.05       80.09
         39 |        167        1.67       81.76
         40 |        145        1.45       83.21
         41 |        116        1.16       84.37
         42 |        135        1.35       85.72
         43 |         92        0.92       86.64
         44 |         68        0.68       87.32
         45 |         68        0.68       88.00
         46 |         53        0.53       88.53
         47 |         33        0.33       88.86
         48 |         30        0.30       89.16
         49 |         30        0.30       89.46
         50 |         24        0.24       89.70
         51 |         23        0.23       89.93
         52 |         21        0.21       90.14
         53 |         15        0.15       90.29
         54 |          6        0.06       90.35
         55 |          9        0.09       90.44
         56 |          6        0.06       90.50
         57 |          9        0.09       90.59
         58 |          7        0.07       90.66
         59 |          5        0.05       90.71
         60 |          5        0.05       90.76
         61 |          2        0.02       90.78
         62 |          3        0.03       90.81
         63 |          2        0.02       90.83
         64 |          1        0.01       90.84
         65 |          4        0.04       90.88
         67 |          1        0.01       90.89
         68 |          2        0.02       90.91
         78 |          1        0.01       90.92
         99 |        908        9.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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