Anecdotally we've heard from shippers and carriers that reviewing or revising rates only every five years may not be the best practice when you're taking a look at a market-based economy. The transactions are driven by price; that's part of the price determination. In that respect, you would have to balance doing it more often against the benefit, because sometimes there are not great changes year over year, and to put the resources into something that doesn't particularly change would, number one, have to be reviewed.
Number two, we're in a bit of an awkward situation now with the provisions being extended for only one year. From our vantage point here, as an economist I'd like to have the system set and steady, so that I can take a look at it long term.