| Year | Venue | State/Country |     | 
|---|---|---|---|
| 1988 | Paard van Troje, The Hague | Netherlands | |
| 1990 | Verhout, Ghent | Belgium | |
| 1993 | Hobart University, Hobart | TAS, Australia | |
| 1997 | Bürgerhaus Stollwerk, Cologne | Germany |     |