Washington DC
2023 Abu Dhabi
2022 New York
2022 Los Angeles
2022 Basel
2022 United Kingdom
2021 New York
2020 Gstaad
2019 New York
2019 Bilbao
2019 Montreal
2017 Blenheim
2017 North Adams
2017 Florence
2017 Aarhus
2017 New York
2015 Krakow
2011 Poznań
2011 Portland
2010 Boston
2010 Melbourne
2009 Prague
2009 Paris
2009 Siena
2009 Chicago
2008 New York
2008 Milan
2007 Toronto
2007 North Adams
2007 Washington
2007 Rome
2007 San Diego
2007 Naples
2006 Providence
2006 Singapore
2006 Vienna
2006 London
2006 Dublin
2006 New York
2005 Karlstad
2005 Bregenz
2004 Duisburg
2004 Tongeren
2004 New York
2004 Washington
2004 Miami
2004 Liverpool
2003 Venice
2003 Brakel-Rheder
2003 Cannes
2003 Turin
2003 Goslar
2002 Berlin
2001 Bordeaux
2001 Monterrey
2001 Paris
2001 Oslo
2000 Buenos Aires
2000 Newcastle
2000 Venice
1999 Rio de Janeiro
1999 Vienna
1998 Rome
1998 Florence
1996