If you don't mind, I'll address it.
What we do is based on historical volumes of work and the complexity mix that we have. At National Defence, the first point is that most of our data is paper-based, so we have to go out and research, then get the data brought in. It needs to be scanned in so that we can then do our work. One of our challenges at Defence is that it's predominantly paper-based.
With respect to the complexity, we are also taking a look at our international agreements and third party agreements. We have to take a look at all of the exemptions that are provided for under the act to make sure that we are in fact in compliance with the act.
Based on our complexity mix and on the volumes and the indication of where the volumes are going, we will estimate how many people we need. It's basically based on that, a guess from which we work the costs forward; it depends on what has happened in the past and our attempt to project the future. There is a little bit of art involved in it.
The metrics we use are how many files an individual at a specific competency level can complete. We have those, and that's what we bear in mind. Then, if we have really complex files or ones that require a lot of investigation, or if we require input from third parties or other countries, we will often give some of them to consultants. The consultants can walk them through, and we are able to focus our staff on doing the less complex files, which they can do in a shorter period of time. We are basing it on metrics and our performance.
You will have noticed in the statistics and what we say in our annual report is that If we notice that our backlog is increasing, we will surge in a given year to drive the backlog down to a more reasonable number of files. We've just completed a year in which we have surged since December to drive our backlog down so that we can start the year at a more reasonable rate.