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More ¾«¶«Ó°Òµns volunteered in 2011 than in any year since 2005, a new study finds. Approximately 64.3 million ¾«¶«Ó°Òµns volunteered at charities last year, providing 7.9 billion hours of service valued at $171-billion.

The 1.5 million additional volunteers boosted the national rate to 26.8 percent of the population, a half percentage point higher than 2010. But the dollar value dipped by $2-billion, as the average number of hours ¾«¶«Ó°Òµns volunteered in a year dropped to 32.7 from 33.9, the reported.

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