GDP at purchasing-power parity values output using a common set of international prices, so a dollar of GDP buys roughly the same basket everywhere. World Bank NY.GDP.MKTP.PP.CD. Latest: $24.20 trillion in 2025.
PPP is the usual ranking when the question is “how large is the economy in real volume?”, not “how large is it at today’s exchange rate?”. From 1990 to 2025 (36 years): latest $24.20 trillion (2025), previous year $23.59 trillion (2024); low $5.44 trillion (1990), high $24.20 trillion (2025).