No, we don't. If you have PNRs, you have where everybody is sitting in the plane. You could know half the plane. It's public information.
The other point is that the information is retained to a maximum of three and a half years, unless, of course, that information is key to an enforcement action. With respect to depersonalization of the PNR, your name is taken off after 72 hours. At the two-year mark, anything identifying you is taken off. At three and half years, if it hasn't been accessed or used, it is further deleted.
At two years, access to that information is very, very limited and is authorized only by the deputy minister, or the head of the Canada Border Services Agency.