As already posted it's hard to be precise, but I knocked doors earlier in the year and was getting around 2 custys per hour. A lot depends on whether the street where you are knocking already has a window cleaner in which case it's harder to find the work. The opposite applies if you get lucky where there is no window cleaner.
As for leaflets, I find it a waste of time. It's too hit and miss in my opinion, knocking doors is far more productive.