1998 (BVI)
1999 (Tanzania, Kenya)
2000 (Germany, Nepal)
2001 (Thailand, Cambodia, Guatemala)
2002 (Peru)
2003 (Egypt)
2004 (India)
2005 (Burma)
2006 (Botswana)
2007 (Palau)
2007 (Italy)
2008 (Paris)
2009 (Costa Rica)
2010 (Spain)
2011 (Jordan)
2012 (France)
2013 (Bhutan)
2013 (France)
2014 (Greece, Italy)
2015 (Sri Lanka, Germany)

British Virgin Islands
Bhutan
Botswana
Burma
Cambodia
Costa Rica
Egypt
France (Paris)
France (Bordeaux)
France (Loire)
Germany
Germany (East)
Greece
Guatemala
India
Italy (Tuscany)
Italy (Puglia)
Jordan
Kenya
Nepal
Palau
Peru
Spain
Sri Lanka
Tanzania
Thailand