My guess is around 30 this year. Not a whole lot. But it is the trend that is looked at. Are people still resigning after the 3+8% payrise? we shall see in 2 or 3 months. People who leave today made their decission before the announcement.
More interesting is how many oz bus drivers would a Virgin Atlantic base in Sydney lure away from EK. And what wiould EK do to keep them? 20-50 is my guess...