- Athens GA, USA, 28 May – 1 June 2007
- Manchester, UK, 18 – 22 May 2009
- Athens GA, USA, 30 May – 3 June 2011
- Durban, South Africa, 27 May-1 June 2013
- Johannesburg, South Africa, 21-27 June 2015
- Montréal, Québec, Canada, 5-9 June 2017
- Mexico City, Mexico, 17 – 21 June 2019
- Barcelona, Spain, 13 – 17 June 2022