2010
Florence,
Italy		 2013
Toronto,
Canada		 2015
London,
Great Britain		 2018
Perth,
Australia		 2019
Heidelberg,
Germany		 2023
Nottingham,
Great Britain
1. Australia United States Japan United States United States United States
2. Japan Japan United States Canada Japan Japan
3. Great Britain Canada Canada Australia Canada Germany
4. Canada Colombia Australia Colombia Colombia Canada
5. Colombia Germany Germany Japan Italy Australia
6. Ireland Great Britain Colombia Germany Germany Great Britain
7. Finland Australia Sweden Singapore Switzerland Italy
8. Germany Austria Great Britain Austria Great Britain Colombia
9.   Mexico New Zealand New Zealand Ireland Philippines
10.   New Zealand  Great Britain New Zealand Singapore
11.     Philippines Australia Austria
12.      Belgium New Zealand
13.       Ireland
14.       China