A research project to measure the impact of Clean Water and Sanitation on standard of living
- Total official development assistance (gross disbursement) for water supply and sanitation, by recipient countries (millions of constant 2020 United States dollars)
- Population by country, available from 10,000 BCE to 2100 based on Gapminder data, HYDE, and UN Population Division (2022) estimates.
- GDP per capita based on purchasing power parity (PPP). PPP GDP is gross domestic product converted to international dollars using purchasing power parity rates