NEW YORK -- Mexico's Carlos Slim remains the world's richest man for the fourth year in a row, according to Forbes, while Warren Buffett dropped out of the top three for the first time since 2000.

And Facebook's Mark Zuckerberg saw his ranking drop 31 spots as his net worth declined by $4.2 billion.

A record 1,426 people around the world made Forbes magazine's latest annual tally of billionaires, up 16 percent from last year. Their average net worth was $3.8 billion, rising 3 percent from 2012. The total net worth for the list's billionaires was $5.4 trillion compared with $4.6 trillion a year ago.

The U.S. continued to be home to the most billionaires in the world, with 442 of them. It was followed by the Asia-Pacific region and Europe rounding out the top three.

There were 210 new faces on the list, with Forbes saying many were helped by rebounding equity markets and strong consumer brands.

Slim's net worth increased to $73 billion from $69 billion a year earlier. Bill Gates of Microsoft held on to second place with a net worth of $67 billion.

Berkshire Hathaways Buffett slipped to the fourth spot with a $53.5 billion net worth. Buffett was surpassed by Amancio Ortega, a Spaniard who holds a huge stake in the retail conglomerate that owns fast fashion brand Zara. He jumped two spots from 2012 with a net worth of $57 billion.


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While Buffett dropped in the rankings, he added $9.5 billion to his net worth -- making him the second-biggest gainer of the year. The largest gainer was Ortega, who added $19.5 billion to his net worth.

There were 138 women on the list, up from 2012's 104. Liliane Bettencourt -- whose family owns a stake in L'Oreal -- is the world's richest woman with a net worth of $30 billion.

Brazil's Eike Batista had the biggest drop in his net worth, with it declining $19.4 billion from the previous year. Facebook's Zuckerberg saw his net worth fall to $13.3 billion from $17.5 billion. His ranking fell to No. 66 from No. 35 in 2012.

There were 60 people that dropped off the list entirely, including Zynga's Mark Pincus and former Chesapeake Energy CEO Aubrey McClendon.

Some of the billionaires can add "jailbird" to their resume. Real estate mogul Zhang Keqiang of China, at the very bottom of the list with a net worth of $1 billion, spent 2 years in jail on charges of defrauding the state and is still awaiting trial.

The Associated Press and Los Angeles Times contributed to this report.