Okay, thank you.
I want to go back to the point where we talked about air rights and air services. I'd just like a clarification.
What have we seen? If the aircraft companies are not taking advantage of all the rights that might be available to them at this point in time, do we see that historically their use of these has grown, or do we see an ebb and flow of these agreements and sometimes they take advantage of them and then maybe the next year they don't? Do we see a trend? What are our historical numbers that indicate that these open rights eventually get gobbled up?