First players to reach X total XP:

100,000,000	Lagrange	May 6, 2014	See rest
200,000,000	Lagrange	October 15, 2014	See rest
300,000,000	Lagrange	August 27, 2015	See rest
400,000,000	Lagrange	June 21, 2016	See rest
500,000,000	TBD		See rest