So the idea of a cap on the price was actually introduced by the previous National Government as a way of limiting the price, and I think it was initially—$15? [Interruption] Twenty-five dollars was the price that that Government said, "We will not allow prices to float above $25. Rather, at that point people can start exercising the fixed-price option." That was because it was felt that, beyond $25, there would, essentially, be kind of too much damage to the New Zealand economy, with cost to businesses and so on. And the net result of that, of course, was that it severely limited the impact of the emissions trading scheme. It was one of the factors that severely limited its impact over that sort of 10-year period. Now, one of the reforms that we introduced was to allow that to move up to $35, and then we've said that, from next year, once we've got this cost containment system operating, that will move and that $50 is the price there. What that does is it allows businesses to say, "That's roughly the band within which we can see the market operating."