Forbes has just released their world’s richest billionaires list, with Bill Gates reclaiming the number one spot over Warren Buffett despite loosing $18 billion over last year. Aggregately, Forbes estimates there are now 793 billionaires worth collectively $2.4 trillion, down from 1,125 people collectively worth $4.4 trillion only a year earlier. The biggest decline in personal net worth was $31.9 billion by Anil Ambani, chairman of India’s Reliance Communications, who now has an estimated net worth of $10.1 billion.

Interestingly, Facebook founder Mark Zuckerberg has been entirely knocked off the billionaires list as his companies estimated valuation declined because of the poor current economic climate. Forbes did not provide an estimate of his personal net worth. Forbes has now named German Prince Albert von Thurn as the youngest billionaire at 25 with an estimated net worth of $2.1 billion.