Billionaires 7 years ago: https://web.archive.org/web/20171004002738/https://www.bloomberg.com/billionaires/ Billionaires today: https://www.bloomberg.com/billionaires/
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Billionaires 7 years ago: https://web.archive.org/web/20171004002738/https://www.bloomberg.com/billionaires/ Billionaires today: https://www.bloomberg.com/billionaires/