This is a really good question. It's certainly something the department and my team are working hard on, as did Minister Wilkinson and Minister McKenna before, to make sure there's no double counting, because sometimes it is a bit complicated. There are a number of measures—you talked about the pricing, the clean fuel standards, the cap. We have to make sure that our methodologies are solid, to ensure that when we say a tonne is being reduced, then an actual tonne is being reduced.
We have a very robust system when it comes to inventories, based on the IPCC methodologies that we update as they are updated internationally, but this is something that we pay very close attention to.