2015
2014
2013
2012
Seoul
Canberra/Sydney
Bejing
2011
Milan
Bergamo
2010
-Frankfurt
2009
Berlin/Venice
Rome
Madison
Las Vegas
Miami
2008
Wien
Madison
2007
Zurich/Madison
Alentejo
Madison
2006
Madison
Switzerland
Victoria
2005
Paris
Darmstadt
2004
Vail
Madison
Vegas
2003
Grand Marais
2002
Rome
2001
Madison/Berlin
Phoenix
Las Vegas
Zurich
2000
Kyoto
Tokyo
Kansas City
1999
Provence
1998
1997
1996
1995
Bologna/Roma
Basel/Geneve
1994
1993
Madison
Nantucket
1992
1991
1990
1989
1988
1987