According to law enforcement officials, counterfeiters in Peru produce the most counterfeit US dollars in the world.
Between 2009 and 2010, over $30 Million in fake dollars were seized by police in the country.
Investigators estimated that only 10 percent of dollar counterfeiters are arrested in the country. Most of the fake currency is smuggled to the United States.
Source: Ian Garland, “Pressed for cash: Rise of counterfeit money in Peru as police seize $2m in fake U.S. currency and 1.5 million euros,” Daily Mail, July 19, 2012.