One could poke around on those sources: https://population.un.org/wpp/Graphs/DemographicProfiles/Line/1832

https://www.oecd.org/els/health-systems/health-data.htm

My understanding is that the largest part of expenditures on health is generally at end of life, at least in developed countries, rather than spending a smaller amount on disease prevention earlier in life, which would be expected to have a larger effect on morbidity and mortality.

EEAGLI looks to be some sort of marketing/ PR firm. shrug