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Shanghai, China, 24–28 July 2011
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Glasgow, UK, 26–31 July 2009
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Nara, Japan, 2–6 August 2007
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Geneva, Switzerland, 17–21 July 2005
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Toronto, Ontario, Canada, 6–10 July 2003
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Taipei, Taiwan, 22–26 July 2001
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Versailles, France, 18–22 July 1999
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Göttingen, Germany, 20–25 July 1997
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Santa Barbara, California, USA, 6–10 August 1995
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Kobe, Japan, 19–23 September 1993
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Utrecht, The Netherlands, 25–29 August 1991
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Florence, Italy, 1–6 October 1989
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Vancouver, BC, Canada, 26–30 July 1987
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Kyoto, Japan, 11–15 July 1985
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Dijon, France, 28 August–1 September 1983
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Fort Collins, Colorado, USA, 2–6 August 1981