How long is a piece of string? Recruitment is driven by so many global economic and political factors both inside and outside the industry that it is impossible to predict. Its like asking what will happen to the Dow Jones or the FTSE over the next year... Theres no way of knowing how long the recruitment period will last.
If you're already into the training, I wouldnt worry about it! Concentrate on making your own luck by passing the exams and knowing the right people. Good luck, kk