Frequencies for first 10,000 rows of ufagecomb variable in natlterr2011 dataset :

   Father's |
   Combined |
      Age U |      Freq.     Percent        Cum.
------------+-----------------------------------
         13 |          1        0.01        0.01
         14 |          1        0.01        0.02
         15 |          5        0.05        0.07
         16 |         33        0.33        0.40
         17 |         78        0.78        1.18
         18 |        156        1.56        2.74
         19 |        233        2.33        5.07
         20 |        328        3.28        8.35
         21 |        341        3.41       11.76
         22 |        424        4.24       16.00
         23 |        397        3.97       19.97
         24 |        400        4.00       23.97
         25 |        457        4.57       28.54
         26 |        426        4.26       32.80
         27 |        451        4.51       37.31
         28 |        419        4.19       41.50
         29 |        414        4.14       45.64
         30 |        414        4.14       49.78
         31 |        370        3.70       53.48
         32 |        375        3.75       57.23
         33 |        352        3.52       60.75
         34 |        290        2.90       63.65
         35 |        289        2.89       66.54
         36 |        241        2.41       68.95
         37 |        203        2.03       70.98
         38 |        222        2.22       73.20
         39 |        186        1.86       75.06
         40 |        174        1.74       76.80
         41 |        133        1.33       78.13
         42 |        121        1.21       79.34
         43 |        103        1.03       80.37
         44 |         78        0.78       81.15
         45 |         67        0.67       81.82
         46 |         44        0.44       82.26
         47 |         39        0.39       82.65
         48 |         42        0.42       83.07
         49 |         32        0.32       83.39
         50 |         27        0.27       83.66
         51 |         13        0.13       83.79
         52 |         15        0.15       83.94
         53 |         14        0.14       84.08
         54 |         17        0.17       84.25
         55 |          7        0.07       84.32
         56 |          3        0.03       84.35
         57 |          5        0.05       84.40
         58 |          5        0.05       84.45
         59 |          7        0.07       84.52
         60 |          4        0.04       84.56
         61 |          1        0.01       84.57
         63 |          2        0.02       84.59
         64 |          2        0.02       84.61
         69 |          2        0.02       84.63
         72 |          1        0.01       84.64
         73 |          1        0.01       84.65
         78 |          1        0.01       84.66
         99 |      1,534       15.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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