Perhaps I could add to that.
The structure of the industry has certainly changed over time. If you look at the plants we have in Canada, those are world-scale manufacturing facilities. They have the efficiencies, the economies of scale, to lower the cost of production and the cost of fertilizer to farmers.
For example, if we were completely reliant just on the Canadian market for potash, we could not justify even half of one single mine and the cost of potash production would probably be uncompetitive. So we are reliant on global markets to create the manufacturing capacities we have.
In terms of the rest of the world, sometimes the flip side is the case. The largest phosphate mines and supply in the world are in Florida, North Carolina, Morocco, and a new mine going into Saudi Arabia. Those are much larger than the phosphate fertilizer plants we would have seen in Canada 20 years ago. They have the economies of scale and they deliver lower-cost products. Farmers around the world benefit from this global marketplace and the free trade in fertilizers, and we're strongly supportive of that.
Nitrogen fertilizers--major producers and exporters in western Canada. The supplies that farmers would buy in eastern Canada are probably brought in by boat from the Arab gulf.