That's a complex set of questions. Maybe I can try to deal with certain stages of it.
You're correct that the number of refineries in Canada has been declining, but the throughput in terms of the volume being refined is actually increasing, and has increased since the seventies.
What's happening is that the smaller, less economical refineries are replaced. The refineries go through upgrade cycles that are usually on two-to-five year horizons. Rather than upgrade facilities at the cost of hundreds of millions of dollars, a new, larger facility is typically built in the same brownfield—the same existing footprint, if you will.
The refining capacity is held fairly constant in Canada. We still remain a net exporter of refined product, as well as crude oil. From a supply-demand perspective in the country, Canada still exports more refined product than it actually imports.