I'll begin, and maybe I'll defer a little bit to my colleagues at the National Energy Board with regard to some of their research on the markets as well.
Propane markets are typically volatile, given the seasonal demand for propane and given the kind of constant production levels that we see. Because propane is linked to natural gas production, it is produced at a steady rate year-round. When we do see big demand increases, especially unanticipated demand increases, we're going to see price responses in terms of ensuring that adequate supplies are available to consumers.
A key balancing factor in all of this is inventory levels.