Its only a rough guide, not accurate by any means but heres your answer:
900 hours a year, so 13 months give or take, plus 3 for TR, 16 months.
Wasnt far off
oh and the information I recieved was from my FTO, don't think its publicised on their website.
To be honest I wouldn't bother, just another example of an airline making money out of us low hours, desperate for a job, deep in the red grads.