2017 Students Germany, France.
2016 Students Chile, Germany, Switzerland, Austria, Denmark.
2015 Students France, Sweden, Turkey, Brazil.
2014 Students Germany, Denmark, France, Italy, Brazil, Finland, Austria, France.
2013 Students Japan, France, Brazil, Switzerland, Chile, Germany, Belgium, USA, Italy
2012 Students Argentina, Canada, France, Belgium, USA, Japan, Germany, Italy.
2011 Students Austria, Switzerland, USA, Belgium, Brazil and Chile.
2010 Students France, Denmark, Belgium, Argentina and Germany.
2009 Students Japan, France, Ecuador, Mexico, Brazil, USA, Canada and Germany.
2008 Students Denmark, Switzerland, Brazil, France, Argentina, Germany, USA, Canada.