Frequencies for first 10,000 rows of ufagecomb variable in natl2008 dataset :

   Father's |
   Combined |
    Age U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
         16 |          9        0.09        0.09
         17 |         51        0.51        0.60
         18 |        119        1.19        1.79
         19 |        200        2.00        3.79
         20 |        274        2.74        6.53
         21 |        324        3.24        9.77
         22 |        352        3.52       13.29
         23 |        398        3.98       17.27
         24 |        395        3.95       21.22
         25 |        431        4.31       25.53
         26 |        465        4.65       30.18
         27 |        466        4.66       34.84
         28 |        460        4.60       39.44
         29 |        405        4.05       43.49
         30 |        495        4.95       48.44
         31 |        384        3.84       52.28
         32 |        369        3.69       55.97
         33 |        334        3.34       59.31
         34 |        301        3.01       62.32
         35 |        302        3.02       65.34
         36 |        249        2.49       67.83
         37 |        237        2.37       70.20
         38 |        165        1.65       71.85
         39 |        167        1.67       73.52
         40 |        104        1.04       74.56
         41 |         85        0.85       75.41
         42 |         68        0.68       76.09
         43 |         71        0.71       76.80
         44 |         60        0.60       77.40
         45 |         30        0.30       77.70
         46 |         38        0.38       78.08
         47 |         22        0.22       78.30
         48 |         18        0.18       78.48
         49 |         14        0.14       78.62
         50 |         10        0.10       78.72
         51 |         10        0.10       78.82
         52 |          7        0.07       78.89
         53 |          9        0.09       78.98
         54 |          6        0.06       79.04
         55 |          5        0.05       79.09
         56 |          7        0.07       79.16
         57 |          4        0.04       79.20
         58 |          1        0.01       79.21
         59 |          4        0.04       79.25
         65 |          1        0.01       79.26
         69 |          1        0.01       79.27
         99 |      2,073       20.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 May 2016