[US] Internet Crime Report: The Top Scams of 2007 / FBI, April 2008
PDF - http://www.ic3.gov/media/annualreport/2007_IC3Report.pdf
"According to the 2007 Internet Crime Report, the Internet Crime Complaint Center (IC3) received 206,884 complaints of crimes perpetrated over the Internet during 2007. Of the complaints received, more than 90,000 were referred to law enforcement around the nation, amounting to nearly $240 million in reported losses. This represents a $40 million increase in reported losses from complaints referred to law enforcement in 2006."