New Zealand doesn't have a history of the kind of windfall taxes that you see in other countries around the world. And it's a little different than, perhaps, the UK, where energy companies can very clearly be said to have that. What we have done, particularly in terms of the petro companies, is, obviously, using the Commerce Commission's report, we now have passed a law that means we have a lot more information about the margins that are being charged and we are constantly keeping our eye on that to ensure that there aren't excessive margins. Similarly, in the supermarket sector, using the power of the Commerce Commission in their report, we've been able to identify what we believe are excess profits and we're now moving to change that sector so that New Zealanders do get a fairer deal.