Desktop computers and color printers now produce about 97% of today's fake $5, $10 and $20 bills, according to United States Secret Service. About 80% of counterfeit $50 bills are made with home computers. In 2003 only 46% of all counterfeit money passed in the USA was made with digital technology. $43.4 mln in counterfeit money was passed in the USA in 2004. There is $700 bln in genuine US currency worldwide.