I'd think so for at least the next five years. Understand this is just my opinion as a controller - I have no inside knowledge of recruiting plans.
Our age profile is rather top heavy - plenty of us will be 50+ in five years and looking at retirement.
We're moving to a new system between 2018 and 2021 (on paper at least) so need extras to cover the transitional period - I'd expect any surplus numbers will be rapidly absorbed in replacing retirements.
Basically we're pedalling hard with training and barely keeping up.