I can't comment on the reasons for the turnover that go back to 2002. Some turnover is necessary, and you would expect it. In CIDA, many people take other assignments with other development agencies. The policy branches throughout government tend to have people who bring policy skills from other departments, and you tend to see more.... That figure does not concern me, because you need to bring in some new blood sometimes.
I don't think there's any reason to believe these people were not operating effectively. Like other parts of the public service, we have some demographic change and we see a fair amount of turnover because we have a cohort that's retiring or about to retire.