- Meeting in Bangkok (15-18 January 2019) – ASIA
- Meeting in Esztergom (13-15 January 2015) – EUROPE
- Meeting in Dar es Salaam (1-3 July 2009) – AFRICA
- Meeting in San Francisco (9-12 February 1999) – NORTH AMERICA AND OCEANIA
- Meeting in Guadalajara (6-11 May 1996) – LATIN AMERICA
- Meeting in Hong-Kong (2-5 March 1993) – ASIA
- Meeting in Vienna (2-5 May 1989) – EUROPE
- Meeting in Kinshasa (21-23 July 1987) – AFRICA
- Meeting in Bogotá (27-30 March 1984) – LATIN AMERICA