For the unfunded pension plans, what happens is it's with reference to the government's borrowing rate. It's ow much it would cost the government to borrow if it wanted to fund a particular liability.
When you're comparing discount rates from organization to organization, particularly with pension plans and employee future benefits, you have to know whether you're talking about funded plans or unfunded plans, the length of the liability, and that type of thing. There are many factors that go into it.
What we're pointing out here is that it's important for you, as readers of these financial statements, to be aware of note 8 to the financial statements, which talks about the measurement—the sensitivity, I guess—around estimates, and to know that different numbers for discount rates can result in different estimates of the liabilities.
The liabilities that are in these financial statements are calculated using discount rates that are within an acceptable range, but when you're trying to put an amount on a particular day on the value of all of the future pension benefits, for example, that the government is going to have to pay over the next many, many years as people retire, you can understand that a lot of estimation that has to go into that, and the discount rate is one of those factors.