2025 - Wrocław (Poland)
2024 - Lanzhou (China)
2023 - Coimbra (Portugal)
2022 - Trondheim (Norway)
2019 - Tokyo (Japan)
2018 - Frankfurt (Germany)
2017 - Pisa (Italy)
2016 - Plymouth (UK)
2015 - Wuhan (China)
2014 - Long Island (USA)
2013 - Bern (Switzerland)
2012 - Washington DC (USA)
2011 - San Carlos (Mexico)
2010 - Bad Honnef (Germany)
2009 - Seoul (Korea)
2008 - Raleigh (USA)
2007 - Roma (Italy)
2006 - Brookhaven (USA)
2005 - Swansea (UK)
2004 - Argonne (USA)
2003 - Nara (Japan)
