The world's richest person got even richer this year.

Forbes says that Bill Gates's net worth rose to $79.2 billion in 2015 from $76 billion last year. That put him at the top of the magazine's list of the world's billionaires for the second consecutive year. The co-founder of Microsoft Corp. has topped the list for 16 of the last 21 years.

In second place is telecom mogul Carlos Slim Helu, with a net worth of $77.1 billion. He had topped the list in 2013.

Next is investor Warren Buffett, who moved up one slot this year with a net worth of $72.7 billion.

Forbes says there were 1,826 billionaires on its list this year, up from 1,645 in 2014. It's the 29th year for Forbes billionaires' list.