China now has the most billionaires despite the country's economic slowdown, stock market plunge and crackdown on corruption, according to a China-based wealth research firm. The Hurun Report said China now has 568 billionaires versus the United States' 535, giving it the largest population of billionaires in the world.

The richest man in China is Wang Jianlin, the Chairman of the Dalian Wanda Group, with $26 billion. STR | AFP | Getty Images

According to Hurun, China's billionaire population first surpassed the U.S. in August, and grew by a total of 90 last year. Granted Hurun's numbers are subject to some debate, as they differ from those of Forbes and other wealth research firms, which still put the U.S. far ahead of China when it comes to billionaires. According to Forbes' 2015 China report, China has 335 billionaires compared with 536 in the U.S. Worldwide, Hurun said there are now 2,188 billionaires, up 99 from 2014 and marking a new record. Yet it said billionaire growth globally is slowing along with the economy. The total wealth of the world's billionaires grew 9 percent in 2015 to $7.3 trillion — more than the combined GDPs of Germany and the U.K.

For the first time, Beijing has also passed New York as the billionaire capital of the world, 100 to 95, Hurun said.