Madam Speaker, I really don't know all the formulas that they use over at fiscal policy, but they have some formulas. If Mr. Lewis is ever over that way and drops into Jean Chretien's office, he will see all these formulas written on his board. I don't know all the formulas that they use, I know that they do have some method of calculation. Many times they go by historical data and they know the number of people in the NWT and they know, historically, the amount of tobacco they consume, et cetera. From that, they can give me a pretty good idea of what the impact will be but it's not a science. It gives you a good estimate, that's all, Madam Speaker. Thank you.