Analog stick control

Correct me if I'm wrong but Input.GetAxis() only returns -1, 0, or 1. I was hoping it would return .5 if the analog stick was tilted halfway in the positive direction.

In most games with analog controls you tilt the stick slightly to make the character walk and you tilt the stick all the way to make the character run.

Is there a way to find out how much the analog stick was tilted? Or is there some other way to get analog controls working?