This information is from MADD:
Traffic fatalities increased a projected nine percent in the first half of 2012, compared with 2011 — the largest percentage increase for a half-year time period on record. While we don’t know yet how many of these deaths were caused by drunk driving, we do know that nearly one-third of all fatal crashes involve a drunk driver. An increase like this could mean almost one thousand additional people would be killed in drunk driving crashes per year.
MADD has a plan to eliminate drunk driving once and for all, but states must do their part by passing all-offender ignition interlock laws. When the Campaign to Eliminate Drunk Driving® launched six years ago, MADD began calling on states to require all convicted drunk drivers to use an ignition interlock device. Since then, 16 states have passed legislation requiring all drunk drivers to use an ignition interlock device. The results have been overwhelmingly positive, with states like Arizona and Oregon reducing drunk driving deaths by over 50 percent. In addition, the number of ignition interlocks in the nation has more than doubled from 101,000 in 2006 to 279,000 this year.
Currently, seventeen states require or provide strong incentives for ignition interlocks for all persons convicted of drunk driving: Alaska, Arizona, Arkansas, Colorado, Connecticut, Hawaii, Illinois, Kansas, Louisiana, Missouri, Nebraska, New Mexico, New York, Oregon, Utah, Virginia and Washington.