- 1 March 2018, Hakone
- 29 March 2017, Seville
- 23 February 2016, Alexandria
- 15 November 2012, Kyoto
- 13 April 2012, Tokyo
- 9 November 2011, St. Germain en Laye
- 18 November 2010, Washington
- 12 November 2009, Tokyo
- 13 November 2008, The Hague
- 8 November 2007, Washington
- 16 November 2006, Tokyo
- 17 November 2005, Munich