The sale of counterfeit brands, called "fayuca," began in the 1970s. It started small, selling from suitcases but rapidly the quantities rose to pickup loads to tractor trailer loads. Sellers used to go to the U.S. to get merchandise, but many now deal with counterfeit goods coming to Mexican ports from China. Many of the Chinese wholesalers even offer credit. Another widespread phenomenon is the unauthorized selling of copyrighted audio and video. Vendors selling this, most of it copied in Mexico itself, have small television sets with large speakers blaring music at full volume. The electricity for this is tapped illegally, with several stands hooked up to the same cable. It is estimated that street vendors earned as much as 80,000,000,000 pesos in 2005 and avoided 22,000,000,000 pesos in taxes.