Alcohol-related traffic fatalities per 100 million vehicle miles
travelled fell from 0.78 in 1993 to 0.62 in 2002. That's a drop
of 20.51%, which is about 50% more than the overall drop in traffic
National Highway Traffic Safety Administration (NHTSA),
National Center for Statistics and Analysis, Fatality Analysis Reporting
System (FARS), 2003.