How long does the iPhone 5 take to charge from 0-100%?

Compared to the 4s for example, I have heard the iPhone 5 charges quicker than the 4s but apple hasn't mentioned it so any iPhone 5 users is it quicker?

Takes about 3 - 4 hours with the phone switched off

And actually it does seem to charge faster. I don't think by much but enough to tell the different. I think because to that lighting cable.