Jupiter Research found that US shipments of MP3 players more than tripled in 2004, and expects that figure to increase again by 35% in 2005. Jupiter predicts the US MP3 market to achieve a compound annual growth rate of more than 10% through 2010, reaching an installed base of 56 mln, from 16.2 mln in 2004. According to the NPD Group, 243 mln songs were downloaded from various peer-to-peer services in March 2005, while in the same month only 26 mln were purchased from digital music stores.