Let me now finish my question.
What my constituents in Etobicoke Centre are concerned about is whether this is an appropriate measure and what the impact of this measure will be. What are the pros and cons of this?
I've heard you on the retroactivity. You've said that multiple times. We've all heard you, but what I'm trying to understand is the monetary impact here, and what the impact of this is to the banks or the issuers.
Again, what I'm asking is this: Of that share of business of the interchange fees earned by banks, which you earn on every transaction that Canadians pay when they use their card or debit card, or whatever their payment mechanism tends to be, of that pool of funds that you make, what amount of money, what percentage of those earnings, does this GST on the clearing services represent?