To talk just about the oil business, the fundamental differences in oil, gasoline, and diesel prices as you go around the world are due to taxes. The base crude refining costs are pretty much the same, and as you saw on the chart, all the taxes are different.
The U.S. is about 15 cents a litre cheaper than the average in Canada, and even in Canada, when you go province to province, you'll get a low of about 25 cents a litre on gasoline all the way up to just over 40 cents a litre in some other provinces. That's where the price differential comes in. There's an element of competitiveness there. This is really government prerogative; we don't get into the tax discussion.
But I want to react to the question about whether the GST went through. I can categorically say yes. Our wholesale prices are ex-GST, and then the taxes are just added on, so the wholesale prices went down exactly by that.
There was a myth about that study in...I think it was New Brunswick; I think it was Shane Walsh who did the study. He said that the tax reduction clearly went through to the marketplace, but the trouble you get into is in the retail volatility, which is after the wholesale price—the retail price wars. It's pretty tough, when the price is going up and down a dime a week, for the consumer to see it, but he said it was definitely there: the whole band just moved down.