The National Highway Traffic Safety Administration has published the 2007 crash statistics. There were 698 fatalities and 43,000 injuries. Fifteen of those fatalities were in Indiana, and seventeen in Michigan.
The most vulnerable group were men in the 45 to 54 age range; boys aged 10 to 15 were a distant second. The safest group were women over 75. Alcohol was a factor in more than one-third of all fatalities.
The NHTSA does not try to interpret the statistics, or assign responsibility for the crashes, but you can read the report here.