Internet Archives
Check out the Wayback Machine. You can check out older versions of almost any website out there. I was able to find past editions of my website, www.mrtechnique.com, that went all the way back to 2003. So, why would you need the Wayback Machine?

MrTechnique.com back in 2006
You may need a website redesign, and you want to pull information off your old website, but your website was taken down. If you don’t have a backup copy of your old website, you may be able to pull some of your old information by going to the Wayback Machine.