Bill Gates tops Forbes list of billionaires

Bill Gates
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Microsoft founder Bill Gates has reclaimed the number one spot on Forbes' list of the top 50 billionaires.

Gates' fortune rose by $9 billion in the past year, making his total worth $76 billion.

Mexican telecom mogul Carlos Slim Helu, who held the top spot for the last four years, is number two. He's worth $72 billion.

Spanish clothing retailer Amancio Ortega is number three at $64 billion.

Berkshire Hathaway CEO Warren Buffett is number four at $58.2 billion.

Larry Ellison, the CEO and founder of Oracle, rounds out the top five. He's worth $48 billion.

Forbes says Facebook's Mark Zuckerberg was the biggest dollar gainer. His fortune jumped from $15.2 billion to $28.5 billion as shares of his social network soared. Zuckerberg is 21st on the list.

See the list