A great example of that is the revenue amount. Most of the revenues—75% or about that—are in relation to our tax revenues. When you take into account the timeline by which people have to file their taxes, personal taxes are April 30 and business taxes are in June. Because it's such an important amount, we try to rely as much on actual numbers as we can. We let the returns come in at CRA up until around the end of May. Then, with the information we have, we actually estimate the accrual portion of the revenues for that year.
Again, as we indicated, a lot of work goes into these accrual estimates, especially on the revenue side. We have to be mindful. The Auditor General mentioned at the beginning that it was definitely her largest financial audit by far. I would say it was probably the largest in the country by far. Again, the audit work to validate and do checks and balances on what is being reported is quite considerable.
I come back to the fact that we're trying to find ways to become more efficient without losing credibility in the numbers. That tax revenue number is highly key and highly material, so we have to make sure our methodologies to come up with the final revenue number are actually solid, sound, checked and so on.
As I said earlier, we're doing work right now to try to look at the administrative portion of producing the book itself—the e-version of it—to see if we can gain some efficiencies there to allow us to maybe gain a week or two in the process.