中美两国经济对比，到底谁跑得快？

Group 1 - The core discussion revolves around the changing economic growth rates of China and the United States, particularly noting that China's growth appears to have slowed relative to the U.S. since 2021 [1][4] - In 2021, China's GDP was approximately 76% of the U.S. GDP, marking the closest economic scale to the U.S. since World War II [3][4] - By the end of 2024, China's GDP relative to the U.S. is projected to drop to about 64%, a decrease of over 12 percentage points in three years [4][6] Group 2 - The nominal GDP, which accounts for inflation, is a critical factor in comparing the economic growth of the two countries [6][8] - China's inflation rates have been very low during the pandemic years, with CPI growth around 0.1% to 0.3%, while the U.S. experienced significant inflation, peaking at over 8% [6][8] - The World Bank's purchasing power parity (PPP) method shows that China surpassed the U.S. GDP in 2014 and has continued to grow faster relative to the U.S. since then [6][7] Group 3 - In terms of global GDP share, China's proportion has increased from about 5.3% in 2006 to nearly 17% by 2024, while the U.S. share has remained stable around 26% [10]