Average attendances Champions League 2012/13.

73.123 Man United
68.000 Bayern Munich
67.519 Real Madrid
67.340 Barcelona
65.829 Borussia Dortmund
59.948 Arsenal
58.589 Celtic
52.133 Schalke
50.688 Spartak
49.120 Benfica
49.118 Shakhtar
47.578 Ajax
45.426 Galatasaray
43.206 Man City
43.036 Paris Saint-Germain
41.139 Lille
40.690 Chelsea
39.634 Dinamo Kiev
31.143 FC Porto
31.019 Juventus
29.331 Milan
29.089 Olympiakos
28.906 Valencia
25.542 BATE Borisov
24.499 Montpellier
24.375 Málaga
21.526 Nordsjælland
19.361 Zenit
17.317 Anderlecht
15.709 Cluj
11.758 Sporting Braga
5891 Dinamo Zagreb

Average, first stage: 40.110.