Which of the following countries will be the biggest country by GDP in 2050?

Prediction market on manifold. GDP figures taken from: the World Bank. Only countries recognized as countries by the UN allowed. Same question but 2060: https://manifold.markets/GastonKessler/which-of-the-following-countries-wi-997354273c5c?r=R2FzdG9uS2Vzc2xlcg

Liquidity: $1,255. Resolves: 12/31/2050.