Yes, at the CBSA we gather exit information in two different ways. When you go out through the land border, our colleagues at the CBP will provide us information. When you depart by air, we'll get that information from the airlines. The nature of the information will be who you are, your travel document, your date of birth, your mode of travel and that sort of thing.
Unfortunately, the systems aren't designed in a way that allows us to do that analysis that I think you're looking for at a systematic level. We can do it on a case-by-case basis, which is very labour-intensive, but we can't do it at a systematic level.