I have never seen one over about 40%. I moved here in late 2011; I was pleasantly surprised I moved right into the path of a total eclipse.
Turns out, this eclipse sweeping the USA is the first to go from coast to coast since 1918, I suppose I won’t have another shot. (Weather, don’t fail me now; this area is semi-desert so hopefully it won’t cloud up like it did to me in Virginia Beach).