I would say a combination of all those. One of them was Katrina. That's a pretty big trigger. We did look at the price spikes in relation to Katrina and we did determine that it was due to a shortage of supply resulting from the hurricane in that situation.
I would also say that we've had enforcement matters related to gasoline dating back a number of years. We've had 13 price maintenance cases that we brought before the courts. I think we won eight of them; we secured convictions in eight of them. As Monsieur Vincent alluded to, we prosecuted a gas-price-fixing cartel in Quebec. We reviewed the Suncor and Petro-Canada merger last year and we secured remedies in that, and even dating back beyond that, mergers between Texaco and Imperial Oil, and Gulf selling its assets to Petro-Canada and to others.