I just want to mention the example of sulphur reduction in gasoline and diesel. We have invested $5 billion across the country in the whole refining network, which added 1¢ a litre to the cost of gasoline production, 2¢ a litre to distillate fuel and 3¢ to heating oil. Those are additional costs that are absorbed. The margin has to cover those kinds of costs.
Since the early 1990s or the beginning of this decade, the refining margin has been high enough that refiners are starting to think about investing to increase production capacity. During the 1980s and 1990s, the return on investment was at an acceptably low level, which led to the closure of many refineries in the early 1980s. You no doubt experienced that situation in Montreal.