Interesting, I hadn't realized this was coming so soon.
India overtakes China to become world’s most populous country
China’s population decline follows decades of strict laws to bring the country’s booming birthrate under control, including the introduction of a one-child policy in the 1980s. This included fines for having extra children, forced abortions and sterilisations. While initially highly effective in controlling the population, these policies became a victim of their own success, and the country is now grappling with an ageing population in steep decline, which could have severe economic implications.
Part of the problem is that because of a traditional preference for boys, the one-child policy led to a massive gender imbalance. Men now outnumber women by about 32 million. “How can the country now shore up birth rates, with millions of missing women?” asks Mei Fong, the author of One Child, a book about the impact of the policy.
https://www.theguardian.com/world/2023/apr/24/india-overtakes-china-to-become-worlds-most-populous-country