Figure 8: Percentage of each portable audio device sold in 2007 and the estimated number of units sold in EU

The percentage of MP3 players was about 83% in 2007 compared to 67% over the four year time period 2004-2007. Clearly, this proportion of MP3 players will increase over time.

Source: SCENIHR,  Potential health risks of exposure to noise from personal music players and mobile phones including a music playing function (2008) , Sections 3.7.4., Page 47.