== WWII and population estimates for 1935-1950? == 

 I see that most yearly population estimates do not go back before 1950. I am researching for a project that aims to show the effect that WWII had on world population and world mortality rates. I am finding a lot of research that uses population estimates to determine WWII death counts on a country basis, but I am having trouble finding estimates that show a timeline of the world statistics during the war. Any ideas?