23 May 2018 - 25 May 2018 - Executive Council - 108th session  San Sebastián, Spain

Executive Council - 107th session - 16 September 2017 Chengdu China

Executive Council - 106th session 12 September 2017 Chengdu China

10 May 2017 - 12 May 2017 - Executive Council - 105th session, Madrid, Spain

19 May 1975 - 23 May 1975 Madrid - Spain

26 April 1976 - 30 April 1976 Acapulco - Mexico

22 November 1977 - 26 November 1977 Tunis - Tunisia

23 May 1977 - 31 May 1977 Torremolinos - Spain

23 May 1977 - 31 May 1977 Torremolinos - Spain

7 November 1977 - 10 November 1977 Madrid - Spain

24 April 1978 - 27 April 1978 Madrid - Spain