The leaving/joining numbers above are incorrect. The last guy to join in 2015 started on 13/12 at number 3905 (380 F/O MJ). Today his number is 3837- up 68 numbers in just under 6 months. The total on the list today is 4104- up 199.
The reason the salary review was so disappointing is reflected in those numbers. Not as many are leaving as say they are, and plenty are joining. Whether that trend continues or not will decide what happens with future reviews.