Wisconsin has the highest percentage of drunken drivers in the country, according to a survey released Thursday.
The National Survey on Drug Use and Health found that 23.7 percent of Wisconsin residents age 16 or older say they've driven drunk during the past year.
North Dakota was second at 22.4 percent.
Of the top 10 worst states for drunken driving, five were in the Midwest (Wisconsin, Minnesota, Nebraska and North and South Dakota).
The states with the lowest percentage of drivers under the influence were Utah (7.4 percent) and Mississippi (8.7 percent).
The data was collected from 2006 to 2009.
Overall, 13.2 percent of the nation's residents 16 or older said they drove under the influence of alcohol, down from 14.6 percent in the previous study period of 2002 to 2005.
The survey also looked at drug use and driving, with Rhode Island and Vermont having the highest drugged driving rates at 7.8 percent and 6.6 percent, respectively.
Wisconsin ranked in the second quintile (fifth), which included states with 4.8 percent to 5.2 percent of the surveyed residents admitting to driving while under the influence of drugs.
Overall, drugged driving dropped fto 4.3 percent in the 2006-2009 report from 4.8 percent in the U.S. in the 2002-2005 report.
The report can be accessed here.