VIDEO : Mariah Carey's 'All I Want for Christmas Is You' Is Still A Classic

For 22 years, Mariah Carey?s ?All I Want for Christmas Is You? has been the Christmas gift that keeps on giving. This year, it again topped the Billboard?s Holiday 100 chart. Walter Afanasieff co-wrote the song with Carey and says he's surprised the song tops the charts every year. The famous song appeared on Carey's 1994 Christmas album. It has sold more than 14 million copies, and is the most downloaded song of Carey?s career. "All I Want For Christmas Is You" has reportedly generated a 50 million dollars in royalties.