In that case - the other 5% they are really loud but weirdly it doesn't appear to have anything to do with whats going on in the game, just decide to sing their song - it is impressive but odd and then it stops for a while until they start again 10 minutes later.It's silent 95% of the time, maybe more
Went to second leg of Barca vs Milan when they were 2-1 down and Messi had a masterclass but it was quiet for 90% of the time.