See article 5 in the Articles of Association.
2009 / Florence, Italy 12 and 13 March
2010 / Manta, Ecuador 29 July
2011 / Geneva, Switzerland 21 January / Geneva, Switzerland 5 December
2012 / Medellín, Colombia 23 Octobre
2013 / Rabat, Morocco 1 Octobre
2014 / Cartagena de Indias, Colombia 2-3 September
2015 / Seville, Spain 23-25 September