What's the average age of a U2 fan?

U2 is a group thats been pretty popular for a long time now, gotta be 20 years since they hit really big. I'd probably say their average fans age would be about 35 maybe. They have appeal for all ages, which is pretty cool. They are kind of a group that once people become fans, they kinda stick with them and continue to enjoy. I wouldn't consider myself a "fan" per se, but I do like some of their stuff.