Pratchett, with more than 85 million books sold worldwide in 37 languages, was the UK's best-selling author of the 1990s. He was appointed Officer of the Order of the British Empire (OBE) in 1998 and was knighted for services to literature in the 2009 New Year Honours. In 2001 he won the annual Carnegie Medal for "The Amazing Maurice and his Educated Rodents", the first "Discworld" book marketed for children. He received the World Fantasy Award for Life Achievement in 2010.