Des is absolutely right. We do use external consultants, mostly for auditing services.
To answer your other questions, the number has increased over, I would say, the last four years, primarily because our staffing levels have been reduced. Around 2010, we had about 46 people on staff; we're now down to about 33. There are many reasons for that: retirement, attrition and so on; to some extent there were budget cuts as well. But we find that the use of external consultants works very well for us. It gives us flexibility and also reduces the costs for industry, because we will use consultants who are located in the jurisdiction in which the audit is taking place whenever we can.
I'm trying to think whether we use consultants in other areas. We use laboratories to do our testing. They are not consultants, but they are external services.