We have looked at the cost, or we are in the process of looking at the revenue-generating measure of an additional tax on big banks. I think we've already done that analysis, which was announced in the budget.
To be honest, Mr. Johns, we've done so many reports on various topics that I sometimes lose track of exactly what we have done and what we are still working on. I don't think we have done that for the profits of oil and gas companies, but I may be wrong. Sometimes I'm asked questions about whether we've done this or that, and we have and I've forgotten about it.
I can get back to you on that specific question and send you the links if we have done that analysis.