Fraud often worsens in difficult economic times, as illustrated by a report published by the Federal Trade Commission. There were more than 1.8 million complaints of fraud, identity theft, or other deceptive practices in 2011 -- an increase of about 40 percent from the previous year. 24/7 Wall St. looked at the 10 states that had the most complaints in proportion to their population sizes. Number one on the list was Florida, with 694 complaints per 100,000 people; while New Jersey closed out the list at number 10, with 538 complaints per 100,000. Last year saw more than 30 different categories of grievances recorded. Identity theft was the most common, at 15 percent of all complaints. Other types of complaints related to the increasing number of Americans in debt because of the recession and the housing crash. Debt collection fraud was the second-most common category, with other classifications including banking and lending scams. Many of the states on the top 10 list were also those that experienced the worst of the recession. 24/7 Wall Street identified these 10 states by reviewing data from the FTC’s Sentinel Network Data Book.