Christmas 2008 could well see the last gasps of the CD format. According to forecasts by the research firm Gartner, CD sales will no longer be the main source of revenue for the music industry in 2009, giving way to downloads. Growing steadily, though to a limited extent (it has not yet made up for the fall in record sales over the past five years), downloading accounted for 15% of music sales in 2007, and 23% in the United States.