Good question, Michael, and I'll give you my theory, for what it's worth. First of all, I think you're right. Here and across the country, we've seen a little change in terms of the historic past 20 years where usage per customer was going down at a slow, but reasonably steady rate. And clearly -- well, let's start with demand. Most of the demand for natural gas in a state like Wisconsin is coming from residential and small commercial customers. In fact, about 2/3 of the natural gas historically consumed in the state of Wisconsin is consumed by residential and small commercial customers. So there, very weather-dependent, obviously, year to year, but when you try to weather normalize, the big change has been the efficiency of furnaces. So if, for example, you replaced a 20-year-old gas-fueled furnace with a brand new one, you would get a significant percentage pickup in efficiency. And I think -- and it's that way with virtually every natural gas appliance in your home. The new appliances are simply much, much more efficient. So I believe that was the big factor driving this kind of slow but steady decline year after year in usage, natural gas usage per customer. Now the last couple of years as natural gas prices have really been low and have stayed low, we have seen a break in that pattern. And you can see it in the numbers we reported today. Couple of things going on. First of all, you know when it costs you less per term and your wife is cold, you know you're going to turn it up. So I think that's piece 1. The second piece is -- so I think there's not as much price disincentive to being more comfortable and to using more natural gas. So that may be one structural change. I think the second is we're seeing an uptick again in conversions. If you look at the price spread in most parts of the country between propane and natural gas, there's still a very significant price spread that incentivizes customers to switch from the use of propane to the use of natural gas. In fact, I think I mentioned during my prepared remarks that we've gotten authorizations and requests now from 7 smaller communities in the western part of Wisconsin, asking us to begin providing natural gas distribution service so that their residents have the opportunity to switch from either oil, propane baseload heat to natural gas. So I think that the pricing of natural gas today is causing a changed behavior in the marketplace, driving more customer connections, driving a move away from propane. And that is mitigating, I think, the increased efficiency that customers are seeing when they upgrade their equipment. So I hope that helps.