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 Finland United States United States United States Japan United States Sweden United States Canada Canada United States Japan United States
2. Finland Sweden Great Britain The Netherlands Sweden Sweden The Netherlands United States Japan Japan Finland Japan United States Colombia
3. Sweden Austria Finland Sweden Finland United States Canada Japan Canada Finland United States Canada Canada Canada
4. Austria Great Britain Sweden Finland Norway Australia Great Britain Finland Finland United States Japan Australia Colombia Japan
5.   Italy The Netherlands West Germany Canada  Sweden Canada Sweden Sweden Great Britain Great Britain Australia Australia
6.    West Germany Canada West Germany  Japan The Netherlands Great Britain Australia Australia New Zealand Germany Russia
7.    France Great Britain The Netherlands  New Zealand Germany Australia Germany Sweden Germany Great Britain Germany
8.    Austria Italy Australia  Australia Great Britain The Netherlands Great Britain Italy Colombia New Zealand Switzerland
9.    Italy Norway Japan  Finland Australia  The Netherlands Germany Finland Finland Austria
10.    Norway Japan Great Britain  Germany Switzerland  Austria Denmark Switzerland Singapore 
11.    Belgium France Switzerland  Switzerland Czech Republic  Switzerland The Netherlands Sweden Mexico 
12.    Switzerland Belgium   Italy    Latvia Italy  
13.    Japan Switzerland   France    Russia Ireland  France
14.    Canada Austria       Ireland France  
15.             Mexico  
16.               
17.               Belgium
18.               The Netherlands
19.               Denmark
20.               
21.               Ireland
22.               
23.               Hong Kong
24.               
25.               South Africa
Placing not known