QF longhaul have about 30 pilots a year to retire at 60 over the next three years and I think it ups to about 50 for a few years after that.
That said, there is no requirement now to give the game away at 60 and so a bunch of them (so far a few a year but increasing) are opting to bid back to the 767 (haven't seen many go to the 737 yet- and why would you when you can sit on the top of the pile on the 767 instead of squirrel caging on the 737!!
)and keep flying beyond 60 so the figures are all but null and void. In short, the numbers will be between 0-50.