32nd Plenary Meeting: Auckland, New Zealand, October 7-11, 2019
31st Plenary Meeting: Dublin, Ireland, October 18-20, 2017
29th Plenary Meeting: Rotterdam, Netherlands October 5-9, 2015
27th Plenary Meeting: Rome, Italy 14-18 October 2013
25th Plenary Meeting: Buenos Aires, Argentina 11-15 April 2011
23rd Plenary Meeting: Canberra, Australia 5-7 November 2008
22nd Plenary Meeting: Athens, Greece 7-9 November 2007
21st Plenary Meeting: Copenhagen, Denmark 2-6 October 2006
20th Plenary Meeting: Madrid, Spain, 12-16 September 2005
19th Plenary Meeting: Seoul, South Korea, 6 – 8 October 2004
18th Plenary Meeting: Buenos Aires, Argentina, 19 – 26 September 2003
17th Plenary Meeting: Warsaw, Poland, 24 – 27 September 2002
16th Plenary Meeting: Ottawa, Canada, 25 – 28 September 2001
15th Plenary Meeting: Helsinki, Finland, 10 – 13 October 2000
14th Plenary Meeting: Noordwijk, the Netherlands, 11 – 15 October 1999
13th Plenary Meeting: Budapest, Hungary, 5 – 9 October 1998
12th Plenary Meeting: Tokyo, Japan, 4 – 6 November 1997
11th Plenary Meeting: Edinburgh, Scotland, 8 – 10 October 1996
10th Plenary Meeting: Bonn, Germany, 10 – 12 October 1995
9th Plenary Meeting: Stockholm, Sweden, 4 – 6 October 1994
8th Plenary Meeting: Interlaken, Switzerland, 29 November – 2 December 1993
7th Plenary Meeting: Canberra, Australia, 8 – 11 March 1993
6th Plenary Meeting: Oslo, Norway, 29 June – 2 July 1992
5th Plenary Meeting: Washington, USA, 4 – 7 November 1991
4th Plenary Meeting: Tokyo, Japan, 18 – 20 March 1991
3rd Plenary Meeting: Ottawa, Canada, 18 – 20 July 1990
2nd Plenary Meeting: London, England, 5 – 6 December 1989
1st Plenary Meeting: Rome, Italy, September 1988