Nathan - this is very cool! You do good work fast!
I have a mind warp on one piece of your research, however...total World Population 80 or over - only 77,138? Could that mean millions?
Wow - if that is 77 thousand I really must have cut the cheese on the quick estimate I did for Blondie. I had guessed that there were about 2 billion world population in 1914, and that maybe 0.00125 ( or 1/8 of one percent ) could have survived till now. This gave me about 2.5 million now.
Should I sell my nursing home stock?
Seriously, this is both useful and fascinating stuff - thanks for your great research -