Region Units sold First available Canada 520,000 as of August 1, 2008 November 17, 2006 Europe 8.5 million as of February 3, 2009[65] March 23, 2007 Japan 2,664,366 as of December 28, 2008[66][67] November 11, 2006 United Kingdom 1.9 million as of January 3, 2009[68] March 23, 2007 United States 5.7 million as of November 1, 2008[69] November 17, 2006 Worldwide 21.3 million as of December 31, 2008[2]