Originally posted by patou2:[..]
hehe i want to know how many new songs U2 played in each show in each tour ( the average )
Few... very few

Let's have War as an example. They debuted something like 8 songs at the Dundee show, but then didn't play anything new for the next 50 or more shows, so it would be 8 / 50 = 0'16 new songs per show.