Where can I find information about typical family sizes in several countries?

Question

I'm doing a presentation for my anthropology class related to Dettwyler's ethnography 'Dancing Skeletons' and have decided to do it on "the pizza metaphor" and am trying to find information regarding typical family sizes in countries other than Mali, Kuwait, China, Iran and India, which are the only ones I have found so far. Namely, I am trying to compile a short list of countries that believe in the 'pizza metaphor'--that more children mean more work is done which means more profit for everyone--and which countries think that smaller is better.

Answer 1

Statistics bureau.
Also, CIA has enough data to get your answers