| 1. | Since 1970 the number of inmates in American prisons has quadrupled.
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| 2. | At the same time, the number of rafting companies quadrupled.
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| 3. | Between 1982 and 1993, imports of olive oil almost quadrupled.
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| 4. | And the amount could quadruple within five years, say analysts.
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| 5. | Our weight room needs to be doubled, tripled, quadrupled.
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| 6. | Then, a month later, he had a quadruple bypass.
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| 7. | So he needed something spectacular Saturday _ the quadruple toe loop.
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| 8. | We want to triple or quadruple the size of our portfolio,
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| 9. | The stock has more than quadrupled in the past 12 months.
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| 10. | He has been on oxygen since quadruple heart surgery in 1990.
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