Yet Agassi used to make two and three times the endorsement money that Sampras did each year.

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If the index goes up 0% to 6%, you would earn that gain on the Spiders plus two times that amount on the at-the-money calls you bought.

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In the past two decades, the money that states spend on prisons has risen at six times the rate of spending on higher education.

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He said official figures might mistakenly count the same money two, three or more times as credit is extended from one company to another and then to a third.

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In Germany yields have turned negative a few times for two-year debt, meaning investors are literally paying the government to borrow their money.

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Compared with those cities, Silicon Valley also has 30% more founders that want to change the world, according to the entrepreneurs' responses, and Silicon Valley start-ups on average raise two to three times as much money as those in other locales in their earliest stages of growth.

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