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