PERCENT OF ALCOHOL-IMPAIRED DRIVERS INVOLVED IN FATAL CRASHES BY AGE, 2002 AND 2011 (1)
Age   2002 2011 Point change  
16 to 20   18 20 2 pts.
21 to 24   33 32 -1
25 to 34   29 30 1
35 to 44   26 24 -2
45 to 54   19 21 2
55 to 64   12 14 2
65 to 74   7 8 1
Over 74   4 5 1

(1) Alcohol-impaired driving crashes are crashes that involve at least one driver or a motorcycle operator with a blood alcohol concentration (BAC) of 0.08 percent or above, the legal definition of drunk driving.

Source: U.S. Department of Transportation, National Highway Traffic Safety Administration.