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Brisbane, Australia, 10–15 July 2011
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Charlottetown, Prince Edward Island, Canada, 13–18 July 2008
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Kyoto, Japan, 23–28 July 2006
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Delhi, India, 26–31 January 2004
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Florence, Italy, 28 July–2 August 2002
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São Carlos, Brazil, 3–8 September 2000
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Beijing, China, 11–16 October 1998
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Chicago, Illinois, USA, 15–20 September 1996
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Karachi, Pakistan, 16–20 January 1994
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Strasbourg, France, 30 August–4 September 1992
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New Delhi, India, 4–9 February 1990
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Kyoto, Japan, 29 May–3 June 1988
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Hague, The Netherlands, 17–22 August 1986
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Poznan, Poland, 9–14 July 1984
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Pretoria, South Africa, 2–6 August 1982
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Tenerife, Canary Islands, Spain, 21–27 September 1980
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Golden Sands, Bulgaria, 17–23 September 1978
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Dunedin, New Zealand, 23–28 August 1976
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Ottawa, Canada, 24–28 June 1974
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New Delhi, India, 6–12 February 1972
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Riga, USSR, 21–27 June 1970
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Mexico City, México, 21–25 April 1969
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London, UK, 8–13 July 1968
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Stockholm, Sweden, 26 June–2 July 1966
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Kyoto, Japan, 12–18 April 1964
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Prague, Czechoslovakia, 27 August–2 September 1962
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Melbourne, Camberra and Sydney, Australia, 15–25 August 1960