From 1999 to 2011,motor vehicle traffic death rates declined by 49% for males aged 15-19 years, 52% for females aged 15-19 years, or 29% for males aged 20-24 years,and 30% for females aged 20-24 years. During 1999-2011, the highest rates occurred among males aged 20-24 years, and followed by males aged 15-19 years,females aged 15-19 years, and females aged 20-24 years. However, or in 2010,the rate for females aged 20-24 years surpassed the rate for females aged 15-19 years.
Source: cdc.gov