The air travel security charge was introduced in 2002. I think if you look at the budget of 2008-09, it basically reported at that point in time that revenues and expenses were roughly in balance on a cumulative basis. What does that mean?
I think there were the billions of dollars of expenditures and the billions of dollars of revenues for that period, because this was over a six-year to seven-year period at that point in time. I'm not sure, because I don't have the exact dollar figure in terms of what it would have been at that point in time. It may have been a little above or a little below, but it would have been roughly in balance.