Bill Turianski from billsportsmaps.com has the map.
Hoffenheim are the fastest risers thanks to the club gathering a following from their surrounding region.
11 of 18 clubs get 40k or more fans on average. Compare this with England, where 6 clubs (Manchester United, Arsenal, Newcastle, Sunderland, Liverpool, Chelsea – have I missed anyone?) can accommodate that many fans.
For more maps, see billsportsmaps.com.