Sales of CD's Over the last 5 years

After creating this, I have found that it needs to heavily advertise not only the band but also where it can be brought from. The idea of iTunes and amazon mp3 needs to be introduced instead of using old ways of buying such as HMV as we now buy off these websites much more than before. I could also include a website such as play.com as these again have had a rise in sales because they offer the CD's at the lowest price anywhere.
It will impact my work heavily and will change the appearance and how it is shown a variety of ways.