According to the RIAA CD sales peaked in 2000 when 942.5 million units were shipped in the United States alone. Since then, physical CD sales have been in a steep decline: in 2001 881.9 CDs were sold, in 2003 746 million, and in 2006 just 614.9 million. Consumers are getting their music from other sources: online music stores (as of late July, iTunes alone had sold over 3 billion songs), piracy, ad-supported sites, MySpace, and promotional free releases.