How is the Recent Play Bonus calculated?

The calculation of the Recent play bonus is dead simple: For every 1000 XP earned after the promotion to the Silver 1, the player is automatically given a bonus. This bonus stacks repeatedly - every time the player wagers enough to earn another 1000 XP, another bonus is gifted to the player. The recent play bonus is fixed at this rate and permanently unlocked, so every 1000 XP earned gives another bonus forever.