Frequencies for est72012sex2_medage variable in pepsyasex2013 dataset :

 Population |
   Estimate |
(as of July |
1) - 2012 - |
    Female; |
    Total - |
 Median age |
    (years) |      Freq.     Percent        Cum.
------------+-----------------------------------
       30.4 |          1        1.89        1.89
       33.9 |          1        1.89        3.77
         34 |          1        1.89        5.66
       34.9 |          1        1.89        7.55
         36 |          1        1.89        9.43
       36.8 |          1        1.89       11.32
         37 |          1        1.89       13.21
       37.3 |          1        1.89       15.09
       37.4 |          3        5.66       20.75
       37.5 |          1        1.89       22.64
       37.6 |          3        5.66       28.30
       37.8 |          2        3.77       32.08
       38.2 |          2        3.77       35.85
       38.4 |          1        1.89       37.74
       38.5 |          2        3.77       41.51
       38.7 |          1        1.89       43.40
       38.8 |          1        1.89       45.28
       38.9 |          1        1.89       47.17
         39 |          1        1.89       49.06
       39.3 |          1        1.89       50.94
       39.6 |          4        7.55       58.49
       39.7 |          4        7.55       66.04
       39.9 |          2        3.77       69.81
         40 |          1        1.89       71.70
       40.1 |          1        1.89       73.58
       40.6 |          1        1.89       75.47
       40.7 |          3        5.66       81.13
       40.8 |          1        1.89       83.02
       41.1 |          1        1.89       84.91
       41.4 |          1        1.89       86.79
       41.8 |          1        1.89       88.68
         42 |          1        1.89       90.57
       42.7 |          1        1.89       92.45
       42.9 |          2        3.77       96.23
       43.3 |          1        1.89       98.11
       44.7 |          1        1.89      100.00
------------+-----------------------------------
      Total |         53      100.00

by Jean Roth , jroth@nber.org , 5 Jan 2016