1983
Gothenburg,
Sweden		 1984
Luzern,
Switzerland		 1986
Colchester,
Great Britain		 1988
Leuven,
Belgium		 1990
Oslo,
Norway		 1992
Utsunomiya,
Japan		 1994
Colchester,
Great Britain		 1996
Jönköping,
Sweden		 1998
Minneapolis, MN,
United States		 2000
Heilbronn,
Germany		 2004
Turku,
Finland		 2008
Vancouver, B.C.,
Canada		 2012
Sakai,
Japan		 2016
London,
Great Britain
1. United States United States United States United States United States Sweden United States United States Canada United States Canada Canada United States United States
2. Finland Sweden Sweden Finland Sweden Canada Sweden Sweden Japan Sweden United States United States Great Britain Japan
3. Sweden Finland West Germany Sweden Finland Japan Canada Finland United States Canada Australia Japan Canada Australia
4. Austria Great Britain Finland Great Britain West Germany United States Finland Japan Sweden Germany Sweden Great Britain Sweden Canada
5. Great Britain Austria Great Britain West Germany Canada Finland Japan Canada Finland Great Britain Japan Australia Japan Great Britain
6. Switzerland West Germany Austria The Netherlands The Netherlands Australia Germany The Netherlands Germany Australia Finland Sweden Finland Colombia
7. West Germany Canada Canada Canada Norway Switzerland Great Britain Germany Australia Finland Denmark Finland Australia Belgium
8. Italy Japan The Netherlands Austria Australia New Zealand Australia Australia Great Britain Japan Great Britain Colombia Germany Germany
9. France Italy Japan Japan Japan Great Britain The Netherlands Great Britain Venezuela Switzerland Germany Switzerland New Zealand Austria
10. Norway Norway Switzerland Switzerland Switzerland Chinese Taipei Denmark Denmark Colombia Denmark Switzerland Italy Colombia 
11. Belgium Switzerland France Norway Denmark  Switzerland Switzerland South Africa The Netherlands Italy New Zealand France 
12.   The Netherlands Norway Italy Great Britain  France France  Italy The Netherlands Venezuela Austria 
13.   France Belgium Denmark France  Italy Czech Republic  Slovakia South Africa Germany South Africa Czech Republic
14.   Belgium Italy Belgium   New Zealand Italy  Austria Ireland Ireland The Netherlands 
15.    Denmark France   Czech Republic   Russia Lithuania The Netherlands Italy 
16.     Australia      Ireland Russia South Africa Philippines 
17.           South Africa Brazil Dominican Republic Singapore Finland
18.           Spain Chinese Taipei Mexico Mexico 
19.           Chinese Taipei   Hong Kong 
20.               
21.               The Netherlands
22.               
23.               
24.               
25.               Israel
26.               China
27.               India
28.               Mexico
29.               Lithuania
30.               Egypt
Placing not known              The Democratic Republic of the Congo