1988 - Finland.
1995 - Italy, Belgium, Holland, Austria, Germany.
1997 - Germany.
2000 - Lithuania.
2002 - Croatia.
2003 - Estonia, Poland, Germany, Austria, Croatia, Slovakia, Hungary.
2005 - Spain, Croatia, Poland, Ukraine, Tanzania, Zambia.
2006 - Estonia, Ukraine, Switzerland, Finland.
2007 - Estonia, Croatia,Ukraine, Norway, Portugal, Spain, Switzerland
2008 – Estonia, Ukraine, Belarus, Norway.
2009 – Germany, Switzerland, Spain, Estonia, Norway, Portugal.
2010 – China, Estonia, Norway, Germany, Austria, Switzerland, Poland, Latvia, India.
2011 – Ukraine, Sri Lanka, Estonia, Poland, Germany, Croatia.
2012 – Sri Lanka, Estonia.