Don't worry, it's 2,000 games no matter how you look at it. Imagine the first 19 levels are all 1 point each and that you have to get 1,981 points to get to level 20.
Last year, my stats were:
Goals: 17,356
YYB Wins: 2,000
SS: 150
MSN: 750
With that, I got 27,714 points at the prize shop. I'm not sure how they do it, but I think the goals must've counted somehow...
Probably the ratio of goals per game X gravitation difference between Neopia and Kreludor dependent on if the Space station is nearby or not + number of games played...
Ah, thank God, I thought that meant I'd have to play 7,500 games. Hm... I can get well over 3,000 games, possibly even 4,000 if I do well enough. That would probably net me almost 40,000 goals since my goal average is about 9.25 goals per game.
I wonder, though, does it factor points according to how many goals you score, or your difference between the opponent's score (like with the team scoring)? I guess all I can do it play until the end and hope I have a lot of points. Someone should work on finding the formula for calculating points.