2018 – Santa Rosa, USA

2016 – Banff, Canada

2015 – Amsterdam, The Netherlands

2014 – Sydney, Australia

2013 – Los Angeles, USA

2012 – Glasgow, Scotland

2011 – Antwerp, Belgium

2010 – Brisbane, Australia

2009 – Toronto, Canada

2008 – Braunschweig, Germany

2007 – Charleston, USA

2006 – Brisbane, Australia

2004 – Auckland, New Zealand

2003 – Sydney, Australia