The specific sources for this graph:

"Album sales hit nine-year low in 2005." CNET, 4 Feb. 2006, https://cnet.com/tech/home-entertainment/album-sales-hit-nine-year-low-in-2005/. Accessed 14 Dec. 2023.

"Billboard Soundscan Digital Album Sales Up 32% In 2008." Nielson, Jan, 2009, www.nielsen.com/insights/2009/billboard-soundscan-digital-album-sales-up-32-in-2008/#:~:text=While%20total%20album%20sales%20slipped,over%20the%20previous%20year%27s%20sales. Accessed 14 Dec. 2023.

Djansezian, Kevork. "Album sales continue fall, downloads climb." NBC News, 4 Jan. 2007, https://www.nbcnews.com/id/wbna16474850. Accessed 14 Dec 2023.

Nestor, Brian P. “Notice: Albums Are Dead - Sell Singles.” Journal of Business, Entrepreneurship & the Law, vol. 4, no. 1, Jan. 2010, pg. 229, EBSCOhost, search.ebscohost.com/login.aspx?direct=true&AuthType=cookie,ip,shib,uid&db=edshol&AN=edshol.hein.journals.jbelw4.11&site=eds-live&scope=site.

The Associated Press. "U.S. Album Sales Fell 9.5% in 2007." The New York Times, 4 Jan. 2008, www.nytimes.com/2008/01/04/business/media/04music.html#:~:text=A%20total%20of%20500.5%20million,point%2Dof%2Dpurchase%20sales. Accessed 14 Dec. 2023.

Christman, Ed. "U.S. Album Sales Show Gains." Billboard, 5 Jan. 2005, https://www.billboard.com/music/music-news/us-album-sales-show-gains-1421145/. Accessed 4 Dec. 2023.