It's a very good question. It's a topical issue. We look at it regularly, but the important consideration here is that the federal debt is like a supertanker: it's very hard to move rapidly. That's part of the reason.
We have done substantial analysis showing that the benefit of moving to a higher level of floating rate debt--i.e., to that 40%--will provide the Government of Canada with savings.
One other important point on debt strategy is that part of this budget is a proposal to consolidate the debt of a number of crown corporations, which will result in about $90 million of saving to the Government of Canada per annum, once done.