- 2017 – Melbourne, Australia
- 2016 – Prague, Czech Republic
- 2015 – Brooklyn, NY, USA
- 2014 – Beijing, China
- 2013 – San Francisco, CA, USA
- 2012 – Barcelona, Spain
- 2011 – Chicago, IL, USA (Proceedings)
- 2010 – Rotterdam, The Netherlands (Proceedings)
- 2009 – Boston, MA, USA (Proceedings)
- 2008 – Paris, France (Proceedings)
- 2007 – Washington, DC, USA (Proceedings)
- 2006 – Arlington, VA, USA (Proceedings)
- 2004 – Washington, DC, USA (Proceedings)
- 2002 – Washington, DC, USA (Proceedings)