It's a very good question. We could put together a survey and we'd be happy to do that for you, because we use methodology that's very similar to a number of other countries, certainly that of the U.S., which is not sustainable. We share similar methodologies with the United Kingdom, and they do not have a sustainable situation. For some of the other G-7 countries we would have to examine and compare methodologies, but we'd be happy to do that for you.
But clearly, we are sustainable at the federal level.