2022 Edinburgh, United Kingdom

2021 Singapore

2020 Boise, Idaho, USA

2019 Stockholm, Sweden

2018 Melbourne, Australia

2017 Saarbrücken, Germany

2016 Los Angeles, California, USA

2015 Prague, Czechia

2014 Philadelphia, Pennsylvania, USA

2013 Metz, France

2012 Seoul, South Korea

2011 Portland, Oregon, USA

2010 Tokyo, Japan

2009 London, United Kingdom

2008 Columbus, Ohio, USA

2007 Antwerp, Belgium

2006 Pittsburgh, Pennsylvania, USA

2005 Lisbon, Portugal