That's correct. That reflects a couple of things. First of all, there is a rapid growth in personal income tax collections, which are growing roughly twice as fast as the underlying tax base. That is something we have been looking at and discussing for some time. We have made some adjustment in our assumptions going forward. The point I'd make is that this is not something that's unique to the federal government in Canada. Other countries around the world have experienced the same phenomenon.
As you know, we had a fairly lengthy report by Mr. O'Neill, who appeared before the committee. He made a number of recommendations. We continue to have dialogues with the private sector. We try to explain the risks, to the extent possible. But you have to understand that you are dealing with combined revenues and expenses of about $400 billion, so a small error on either side translates into a fairly significant change to the bottom line.
Fundamentally, what we're dealing with is how you manage that risk. Our approach is to try to be upfront and as transparent as possible on the nature of those risks.