#12 Bill Gates - Net Worth $136 Billion
Bill Gates spent much of his life as the richest person on earth but today he is #2 behind Carlos Slim Helu with a net worth of $62.5 billion. At the peak of the dotcom bubble, Gates' Microsoft stock soared, giving him a net worth equal to $136 billion in 2012 dollars. That's enough to make him the 12th richest human ever.
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