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| WSE 2011: September 30, 2011 Williamsburg, VA |
WSE 2010: September 17-18, 2010 Timisoara, Romania |
WSE 2009: September 25-26, 2009 Edmonton, Canada |
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| WSE 2008: October 3-4, 2008 Beijing, China |
WSE 2007: October 5-6, 2007 Paris, France |
WSE 2006: September 23-24, 2006 Philadelphia, PA |
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| WSE 2005: September 26, 2005 Budapest, Hungary |
WSE 2004: September 11, 2004 Chicago, IL |
WSE 2003: September 22, 2003 Amsterdam, The Netherlands |
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| WSE 2002: October 2, 2002 Montréal, Canada |
WSE 2001: November 10, 2001 Florence, ItalyL |
WSE 2000: March 1, 2000 Zürich, Switzerland |
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| WSE 1999: October 5, 1999 Atlanta, GAL |
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