According to V1rtual's data ...
Its like this ...
Silva
08/09 - 0.2 goals, 0.2 assist per game
Career - 0.14 goals, 0.11 assist per game
Ribery
08/09 - 0.38 goals, 0.46 assist per game
Career - 0.26 goals, 0.33 assist per game
Diego
08/09 - 0.38 goals, 0.21 assist per game
Career - 0.32...