There's more money at stake on the corporate tax side. More of our audit efforts are devoted to corporations than to individuals. I don't have an exact percentage split, but it's predominantly corporate tax.
That's not to say we don't devote a considerable amount of audit effort to the individual tax side as well. We focus on high-wealth individuals, in particular when there's an association with a haven country. We have been doing more on the personal income tax side in the last couple of years, partly because of the exchanges of best practices that we've had with other tax administrations.
I can mention, for example, the Australian tax office. They undertook a high-wealth-individual project several years ago that they briefed us on. We were quite taken with that and initiated what we call a related parties initiative that looks at high-wealth individuals and the entities they control, either directly or indirectly. This is a non-traditional audit approach; it's a merger of what we would normally do on the individual side and the corporate side. It means we have a network of associated entities and we have parallel audit work. It's actually a single audit divided into numerous audits on that basis.
We find we've had very good success with that project. In fact, we'll probably be converting it into a permanent program, based on the results of the pilots we've undertaken. We've done about 12 of these. They take a considerable investment of audit expertise, but there is a return on investment that makes it well worth continuing to do it.