Here I thought this had already happened.
Check it out:
The US is on the brink of losing its status as the world’s largest economy, and is likely to slip behind China this year, sooner than widely anticipated, according to the world’s leading statistical agencies.
The US has been the global leader since overtaking the UK in 1872. Most economists previously thought China would pull ahead in 2019.
The figures, compiled by the International Comparison Program hosted by the World Bank, are the most authoritative estimates of what money can buy in different countries and are used by most public and private sector organisations, such as the International Monetary Fund. This is the first time they have been updated since 2005.