According to a 2000 motor vehicle occupant survey conducted by NHTSA, 81 percent reported that they favored mandatory helmet use laws for motorcyclists. Support is more prevalent among females (88 percent) than males (72 percent) and among non-motorcyclists (83 percent) than those who drove motorcycles (51 percent). Support was higher in states requiring all riders to wear helmets (84 percent) compared with states with lesser requirements (75 percent) or no requirements (79 percent).