Actually, there are now more Chrome users than IE users (depending on which country you are dealing with). German users have been huge Firefox users since 2005. And the Webkit supergroup (add all the Safari, iOS, and Android browsers to Chrome) means even more of the market than you might think are using essentially “the same” browser engine.
(Quotes because, as PPK always reminds us, there is no monolithic WebKit in actuality.)
Edit in reply: Hmm, “currently… except for recently.” Then let my comment be in reply to “currently” and not “recently,” I suppose. Not sure if my parent was edited after my reply, or if I was really that bad a reader.