What is the maximum \"XP\" in the game? (Tom Clancy's Ghost Recon: Breakpoint)

Raised the level of XP to 30,then why not crawling ie if you did some kind of action murder melee or shots are successful,are displayed at the same scale to raise the next level.And that got to 30 and stopped,why?What additional requirements are needed that would continue to pump?Or is it the maximum level?I'm not Pro level gear mean everything is clear,namely about the level of XP