Approximately one in six drivers across the United States may be driving uninsured by 2010, according to a recent study from Insurance Research Council (IRC). Although the estimated percentage of uninsured motorists decreased nationally, from 14.9 percent in 2003 to 13.8 percent in 2007, the recent economic downturn is expected to trigger a sharp rise in the uninsured motorist rate. The recently released study, Uninsured Motorists, 2008 Edition, estimates the percentage of uninsured drivers countrywide and by state for the period 2005 to 2007. The IRC estimates the uninsured driver population using a ratio of insurance claims made by individuals who were injured by uninsured drivers to claims made by individuals who were injured by insured drivers. The study contains recent statistics by state on uninsured motorists claim frequency, bodily injury liability claim frequency, and the ratio of uninsured motorists to bodily injury claim frequencies.