Good Grief, Have you not heard of birth control?The world is headed for a population overflow.
Seriously, I really don't know, I have experianced that in a few games already.
I have a current Village with a population of 35, and am keeping it at that point. I have solved all the puzzles with the excerption of the golden child (On purpose, 'cause, I just don't like him), and the puzzles that the Golden child is needed to solve.
The Villagers are happy, and just plugging along.