I'll perhaps start, and then I'll turn to Derek to add some additional information. It's the distinction between how much of the carbon price might have affected emissions in one year versus how much by mid-2030. When you've heard us talking about one-third...responsible for one-third of reductions, we are talking about the 2030 number. By 2030, our modelling suggests that the carbon price will have resulted in 78 megatonnes of reductions.
Derek, maybe you could talk to the year-over-year issue.