Population by Age and Sex for China, India, and United States: 2020 and 2060
census.gov
census.gov
Yes I get per capita is way out of balance, exporting our manufacturing to China, etc. But point is the future of our climate will be up to what China, India, and maybe Africa does. The US and west is shrinking away population-wise in comparison.
The closest comparison I can think of is what Japan is currently experiencing, but that is a drastically different country with a drastically different government.
I wonder if they are called doner kebab charts. You know, in the tradition of pie charts.