.... and the response was...
"
The median age in the developing world was 24.3 years in 2000, while for the developed world it was 37.4 years. By 2050, the United Nations projects that the median age in the developing world will reach 35 years, while in the developed world it will be an unprecedented 46.4 years.May 12, 2005
"
And according to this Wikipedia post, in some countries it is even higher.
https://en.wikipedia.org/wiki/List_of_countries_by_median_age
Wow ... I feel young again!