| 1951 | Foundation | - | Cranfield | - | - |
|
| 1952 | 1 | - | Amsterdam | - | - |
|
| 1953 | 2 | - | Stockholm | - | - |
|
| 1955 | 3 | - | Cranfield | - | - |
|
| 1956 | 4 | - | Zurich | - | - |
|
| 1957 | 5 | - | Brussels | - | - |
|
| 1959 | 6 | 1 | Amsterdam | - | - |
|
| 1961 | 7 | 2 | Paris | - | - |
|
| 1963 | 8 | 3 | Rome | - | - |
|
| 1965 | 9 | 4 | Munich | - | - |
|
| 1967 | 10 | 5 | Melbourne | - | - |
|
| 1969 | 11 | - | Stockholm | J. Schijve (Netherlands) | - |
|
| 1971 | 12 | 6 | Miami | E.L. Ripley (UK) | - |
|
| 1973 | 13 | 7 | London | E. Gassner (Germany) | - |
|
| 1975 | 14 | 8 | Lausanne | S. Eggwertz (Sweden) | - |
|
| 1977 | 15 | 9 | Darmstadt | H.F. Hardrath (USA) | - |
|
| 1979 | 16 | 10 | Brussels | A.J. Troughton (UK) | - |
|
| 1981 | 17 | 11 | Noordwijkerhout | O. Buxbaum (Germany) | - |
|
| 1983 | 18 | 12 | Toulouse | J.Y. Mann (Australia) | - |
|
| 1985 | 19 | 13 | Pisa | L. Jarfall (Sweden) | - |
|
| 1987 | 20 | 14 | Ottawa | T. Swift (USA) | - |
|
| 1989 | 21 | 15 | Jerusalem | J.B. De Jonge (Netherlands) | - |
|
| 1991 | 22 | 16 | Tokyo | R.M. Bader (USA) | - |
|
| 1993 | 23 | 17 | Stockholm | U.G. Goranson (USA) | - |
|
| 1995 | 24 | 18 | Melbourne | W. Schütz (Germany) | - |
|
| 1997 | 25 | 19 | Edinburgh | J.W. Lincoln (USA) | - |
|
| 1999 | 26 | 20 | Seattle | J.C. Newman, Jr. (USA) | - |
|
| 2001 | 27 | 21 | Toulouse | A.F. Blom (Sweden) | - |
|
| 2003 | 28 | 22 | Luzern | L.B. Vogelesang (Netherlands) | - |
|
| 2005 | 29 | 23 | Hamburg | H.J. Schmidt (Germany) | - |
|
| 2007 | 30 | 24 | Naples | J.P. Gallagher (USA) | - |
|
| 2009 | 31 | 25 | Rotterdam | J. Rouchon (France) | Michael Shepard (USA) |
|
| 2011 | 32 | 26 | Montreal | G. Clark (Australia) | René Alderliesten (Netherlands) |
|
| 2013 | 33 | 27 | Jerusalem | J. Rudd (USA) | Chris Wallbrink (Australia) |
|
| 2015 | 34 | 28 | Helsinki | J.P. Komorowski (Canada) | Martin Kadlec (Czech Republic) |
|
| 2017 | 35 | 29 | Nagoya | A. Brot (Israel) | Shu Minakuchi (Japan) |
|
| 2019 | 36 | 30 | Krakow | S. Swift (Australia) | Adam Pilchak (USA) |
|
| 2021 | 37 | - | Webinar | - | Simone Romano (Italy) |
|
| 2023 | 38 | 31 | Delft | C. Dalle Donne (Germany) | André Luis Pinto (Brazil) |
|
| | | | | | |
|
| | | | | | |