Career Rank

Hello GeoGuessr! I just emailed with Filip about the career rank and he helped me out a ton. He said that the rank was based off of other players so if players at rank 99 are playing well, they will stay in front of me at rank 98. Since this is true and it is related to other players success, I was wondering what it actually took to get to rank 100. Thank you so much for your help. Cheers 😀