In my package I did an analysis for you. The difference between my response and the others is that in my assessment, if we were willing to go to the international market and could find all the international credits we wanted, and if we were comfortable that they met our requirements and weren't hot air, I can't see any possibility of securing more than 91 million tonnes a year from the international market at any price.
To step back, this isn't theory. Our gap has two parts to it. Right now the gap constitutes 220 million tonnes of emissions that come out of existing plants in Canada, and there's 45 million tonnes of gap that's the presumed growth in emissions between now and 2012. I can only find 91 million tonnes in the international marketplace. This means that at a minimum, to comply with Kyoto, you would have to shut down 220 million tonnes minus 91 million tonnes worth of existing facilities. That's the physics of it.