The Insurance Research Council (IRC) estimates in a new report that fraud and buildup added between $4.3 and $5.8 billion to auto injury settlements in 2002, which represents between 11 and 15 percent of all dollars paid for private passenger auto injury insurance claims in that year. This estimate is somewhat lower than in an IRC study of claims paid in 1992. In the previous study, the IRC found that fraud and buildup added between 17 and 20 percent of total claim dollars paid in 1992.