From this article that says the estimated cost of the wars in Iraq and Afganistan will be $570 Billion by the year 2010.
Google says population of Iraq is 26,074,906
Google says population of Afafanistan is 29,928,987
Total = 56,003,893
Divide that total into the $570 Billion it works out to cost $10,178.86 for each and every single man, woman and child in both countries.
Just my fun with math today.