Which Champion is the Richest?

So Riot, do you actually have the ability to look back across all the old games to see which champion has earned the most gold over the entire length of the game?

I'm just curious if any of the champions have actually become billionaires yet.

I'm also curious which roles would end up making the most money. Would it be the junglers of old, or the adc, or maybe a solo laner? perhaps it's the support characters who end up getting kills and running away as a whole nother carry. who knows?

My money's on the old Junglers though. I get the impression they made more than enough money in the old days to make up for their slump now.