"During the 30 days before the survey, 24.1% of students nationwide had ridden one or more times in a car or other vehicle driven by someone who had been drinking alcohol (Table 5). The prevalence of having ridden with a driver who had been drinking alcohol was higher among white female (23.8%) than white male (20.5%) students. Overall, the prevalence of having ridden with a driver who had been drinking alcohol was higher among Hispanic (30.7%) than white (22.1%) and black (22.8%) students; higher among Hispanic female (30.7%) than white female (23.8%) and black female (23.2%) students; and higher among Hispanic male (30.7%) than white male (20.5%) and black male (22.5%) students."

Source

"Youth Risk Behavior Surveillance — United States, 2011," Morbidity and Mortality Weekly Report (Atlanta, GA: Centers for Disease Control, June 8, 2012) Vol. 61, No. 4, p. 5.
http://www.cdc.gov/mmwr/pdf/s…