Yes. From the studies that came out in 2004 in these areas in particular, there would clearly be benefits in the area of 15% to 20% efficiencies, which hopefully could be reinvested in replacing some of the older infrastructure.
Those are the numbers that are there. We're taking a very deliberate journey, step by step, making sure that at each step of the plan we know where we are, so that we can move to the next level.