2010
Florence,
Italy
2013
Toronto,
Canada
2015
London,
Great Britain
2018
Perth,
Australia
1. Great Britain United States United States United States
2. Belgium Canada Australia Japan
3. Germany Japan Canada Canada
4. Poland Venezuela Germany Australia
5. Slovakia Ireland Great Britain Singapore
6. Austria Austria South Africa Germany
7. Italy Great Britain Japan Great Britain
8. Ireland Australia Chinese Taipei Colombia
9.   Colombia India New Zealand
10.   Germany Philippines Denmark
11.   Chinese Taipei Ireland Malaysia
12.    Colombia India
13.     Hong Kong
14.     China