teribus - This report is from 2004 but is quite comprehensive. What I gleaned from it was that the population of Iraqi children under 15 is very high and that women outnumber the men. This means that Iraq has a highly dependent population because many of the men have been killed.

http://www.iq.undp.org/ILCS/PDF/Tabulation%20Report%20-%20Englilsh.pdf

There are many, many factors that contribute to population figures but that does not change the fact that, at present, the number of Iraqi refugees is more than four million. Combine that with the number displaced by the creation of Israel and it is no wonder the West is viewed with contempt. We have done nothing but cause the people of the Middle East more sorrow and hardship.