XP Dynamic Rates at Launch informations :

Level 1 = 40x

Level 40 = 40x

Level 52 = 35x

Level 61 = 30x

Level 65 = 25x

Level 70 = 20x

Level 75 = 15x

Level 76 = 10x

Level 78 = 5x

Level 79 = 1x

Level 80 = 0.5x

From Level 81+ , (XP Rate gradually decreases by 0.1 until it reaches 0.1x)