Some 48% of Americans polled by Gallup in 2007 do not believe in evolution.
Now, I realize that you did not invent the idea of evolution, but your concept of natural selection gave us a mechanism by which evolution could occur. That's why we're still celebrating your birthday, even though it's getting a tad boring after 199 of them.
I would state where I personally stand on evolution, but I'm channeling my inner Michael Jordan (I wish I could do that more on the basketball court), and I don't want to marginalize any readers. After all, creationists buy shoes too.