Newly released data shows which American cities have the most passionate fanbases in the NFL

It's an age-old question that's divided sports fans for decades: which city or team has the most passionate fanbases?

There are several obvious contenders, cities that have the reputation for caring "more" about their team than others. Particularly in the NFL. The Philadelphia Eagles come to mind, with that city's fans infamous for maybe caring a bit, too, much. New York and Boston too, with the East Coast mindset and dedication to sports.

Then there is Chicago Bears fans, who pack the old...