| YEAR | LOCATION |
| 2024 | Milano, Italy |
| 2022 | Seoul, South Korea (virtual) |
| 2020 | Chicago, USA (virtual) |
| 2018 | Heidelberg, Germany |
| 2016 | London, UK |
| 2014 | Boston, USA |
| 2012 | Kyoto, Japan |
| 2010 | Athens, Greece |
| 2008 | Christchurch, New Zealand |
| 2006 | Santa Fe, USA |
| 2004 | Paris, France |
| 2002 | Munich, Germany |
| 2000 | Sudbury, Canada |
| 1998 | Takayama, Japan |
| 1996 | Helsinki, Finland |
| 1994 | Eliat, Israel |
| 1992 | Granada, Spain |
| 1990 | Geneva, Switzerland |
| 1988 | Boston, USA |
| 1986 | Sendai, Japan |
| 1984 | Dortmund, West Germany |
| 1982 | Balaton, Hungary |
| 1981 | Wailea, USA |
| 1980 | Erice, Italy |
| 1979 | Bergen, Norway |
| 1978 | Lafayette, USA |
| 1977 | Elbrus, USSR |
| 1976 | Aachen, West Germany |
| 1975 | Balaton, Hungary |
| 1974 | Philadelphia, USA |
| 1972 | Balaton, Hungary |
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