History

21 Berlin March 2017
20 Munich March 2016
19 Ilmenau March 2015
18 Erlangen March 2014
17 Stuttgart March 2013
16 Dresden March 2012
15 Aachen February 2011
14 Bremen February 2010
13 Berlin February 2009
12 Darmstadt February 2008
11 Vienna March 2007
10 Ulm March 2006
9 Duisburg March 2005
8 Munich March 2004
7 Ilmenau March 2001
6 Stuttgart March 1999
5 Karlsruhe March 1998
4 Kaiserslautern December 1997
3 Vienna May 1997
2 Zurich October 1996
1 Munich April 1996