| Place | Country | Date | Year | |
|---|---|---|---|---|
| 1st | Pilzen | Czech Republic | 12 - 15 June | 1967 |
| 2nd | Helsinki | Finland | 07 - 11 August | 1972 |
| 3rd | München | Germany | 10 - 15 May | 1976 |
| 4th | Zurich | Switzerland | 27 April - 04 May | 1980 |
| 5th | Oslo | Norway | 25 - 28 May | 1983 |
| 6th | Vejle | Denmark | 05 - 10 May | 1987 |
| 7th | Sofia | Bulgaria | 16 - 21 September | 1991 |
| 8th | Bolzano | Italy | 17 - 23 September | 1995 |
| 9th | Göthenborg | Sweden | 04 - 09 September | 1999 |
| 10th | Serenitz | France | 14 - 19 September | 2003 |
| 11th | Geneve | Switzerland | 08 - 15 September | 2007 |
| 12th | München | Germany | 02 - 08 September | 2011 |
