| Year |
City |
Country |
| 2003 |
Borovets |
Bulgaria |
| 2004 |
Moskva |
Russia |
| 2005 |
Leiden |
The Netherlands |
| 2006 |
Tartu |
Estonia |
| 2007 |
Sankt-Peterburg |
Russia |
| 2008 |
Slantchev Bryag |
Bulgaria |
| 2009 |
Wroclaw |
Poland |
| 2010 |
Stockholm |
Sweden |
| 2011 |
Pittsburgh |
USA |
| 2012 |
Ljubljana |
Slovenia |
2013
2014 |
Manchester
Beijing |
UK
China |
|
|
