Here's a site with some amazing WW2 stats;

Link

And two very important statements;

(1) No matter how one looks at it, these are incredible statistics. Aside from the figures on aircraft, consider this statement from the article: On average 6600 American service men died per MONTH, during WWII (about 220 a day). Most Americans who were not adults during WWII have no understanding of the magnitude of it. This listing of some of the aircraft facts gives a bit of insight to it.

(2) The US civilian population maintained a dedicated effort for four years, many working long hours seven days per week and often also volunteering for other work. WWII was the largest human effort in history.

Phil