Forbes has revealed its annual list of top billionaires and big gains have been made in Asia. China, for the first time ever, has the most billionaires outside the US when Hong Kong is included.

Notably, a decline in the number and wealth of US billionaires is continuing. The total number of US billionaires is down to 40 percent from 45 percent last year. Also, this year’s number one, worth $53.5 billion, is Mexican telecom and conglomerate business owner Carlos Slim. Though, as would be expected, Bill Gates and Warren Buffett follow.