I reached Level 200 on December 31. Until then, each level had been increasing in small incremental amounts, much like the consecutive days played bonus does. The last few levels before reaching Level 200 were around 375,000 per level.
I had to look about ten times when I saw what it took to reach Level 201. It's set at about 2.148 billion xp. Yes, that is billion (as in 1,000 x a million) for each one. Plus another 148 million.
I got 30,000 million xp in 2017. I would have to duplicate that insane effort and do it for over 70 more years to achieve the next level! I would be about 130 years old, lol!
So I guess the top brass decided to cap the highest level at 200. See you all there....