| http://www.w3.org/ns/prov#value | - One possible reason: Seat-belt use hit a record high of 84% nationally.??? Life expectancy in the U.S. reached an all-time high of 77.9 years in 2007, the latest year for which statistics are available, continuing a long upward trend. (he is 75.3 years for men and 80.4 years for women.)??? Death rates dropped significantly for eight of the 15 leading causes of death in the U.S., including cancer,
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