The global ranks of billionaires have added 199 people, but none came close to unseating Mexico's Carlos Slim at the top.
The world's richest man added $20.5 billion to his coffers in the past year, putting his total fortune at $74 billion, according to Forbes magazine.
Forbes counts 1,210 billionaires with a combined wealth of $4.5 trillion. That's up from $3.6 trillion last year.
Bill Gates, co-founder of Microsoft Corp. and now a fulltime philanthropist, is No. 2 on the list with $56 billion. Investor Warren Buffett of Berkshire Hathaway is third.
Mark Zuckerberg, CEO of Facebook, saw his net worth more than triple to $13.5 billion, earning him the No. 52 spot.