For comparison... it took Blu-ray a Year and a Half to sell 9 million discs in the US.
http://news.teamxbox.com/xbox/16068/Bluray-Disc-Movie-Sales-Top-9-Million/
With 3 million being in the first 11 weeks of 2008.
So... 9 million - 3 = 6 million discs sold right in 2007, right?
So that means.... 24 million discs sold in 2008, right?
So aproximitly 30 million discs sold total.
DVD beat that...
and back then people bought significantly less movies.








