I simply can't answer that question accurately because the information you're looking for isn't public. So I can't give you any figures.
However, I can tell you that, based on the research I've done, my experience as a National Defence official and the information passed on to me by my students at the University of Ottawa seeking permanent government positions and student summer jobs, which is the case for most of them, there are very long backlogs for top secret security clearances.
However, those clearances are necessary for most jobs in the sector we're considering. Waiting times are more than one year, even two years or more in many cases. This is causing major problems for morale and personnel retention.
Consider, for example, a very talented young individual who wants to join the intelligence community and who gets a job after going through a process, which, in some instances, is very long as well, involving psychological tests, among other things. If that individual is told that he or she will have to wait an additional 6 to 12 months for a security screening to the completed, that individual may not have the patience to wait all that time and might feel frustrated.
This kind of waiting time is causing an enormous problem, one that has been known for a number of years now.