Well you might wanna think twice.

Yes, that much. If you train Pokemon and want to get the best out of your team, and you still don't know what EVs are, you stand to miss out on quite a lot. Check serebii.net for details. Of course, I'm sure most of you would have known about this ages ago anyway :P (and in which case the only point of this blog is to show off the crazy screenshot)

Of course, this huge increase is just for one level, after that it evens out till you reach level 100.