bdcer I think that Keg means that those figures relate to each new aircraft in an expansion. There would seem to be around 7.5 crews per aircraft.
743s will not go within 5yrs due to the money being spent on them.
Yes the 7 762s may be gone by the end of next year but there are another 9 A330s comming. There may yet be further expansion.
So the amount of recruitment will depend not only on retirements but also expansion.