Lots of variables depending on the results of our AIP for contract extension, or possibly starting soon full contract negotiations next year.
How cheap gas is.
If they order NSNB 100 aircraft like the CS100/300 how fast deliveries could be expected and how fast they need to start training for that. (This is all a very large "long shot" for 2016--most likely 2017+)
Economic and political climate

Previous announcements were stating around 1000/year. I believe this year will end up with very close to that projection. Next year could be very close as well. I'd expect 60-80 new hires a month.