Despite high-profile data breaches, identity fraud may be on the decline, according to a study released on Thursday. The firm found that the percentage of the U.S. adult population that experience fraud dropped to 3.7 percent in 2006 from 4.0 percent in 2005. The Javelin study found that the victim’s income played a major role in the fraud rate. While Americans with incomes of more than $150,000 had a high rate of fraud, with 7.3 percent reporting incidents, they only took half as long to resolve fraud as victims whose income was less than $15,000.