Thank you very much, Ms. Crombie, for the question.
When revenues are being forecast, there are really two variables or lags that are taken into consideration. One of them, of course, would be the economy and predicting what's happening with the economy. The second part is that once the year is up, for organizations or individuals, particularly corporations, there is often a lag before they get their actual tax returns in. So there's a double variable, one with the economy, and another when the system catches up with it, if I could put it that way. So this does make it a challenge to make those predictions.
It is a lot of money; it is billions of dollars. On a percentage basis, though, it's a couple of percent—and I don't mean to diminish it.