Billionaires had a good 2012.
According to Bloomberg, the richest 100 billionaires added $241 billion to their wealth this past year.
As a whole they're worth $1.9 trillion.
Bloomberg kindly gave us the data on the Top 10 gainers, how much they're worth, and how much they made.
They come from a range of industries including tech, telecom, and chemicals.
Rinat Akhmetov
Net worth: $21.2 billion
How much he gained in 2012: $6.8 billion
What he does: Russian oligarch with massive investments in natural resources.
Source: Bloomberg
Jeff Bezos
Net worth: $23.6 billion
How much he gained in 2012: $6.9 billion
What he does: Amazon CEO and founder. Amazon shares had a huge 2012.
Source: Bloomberg
Bill Gates
Net worth: $62.7 billion
How much he gained in 2012: $7 billion
What he does: Microsoft founder and Chairman.
Source: Bloomberg
See the rest of the story at Business Insider
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