Session 14 (Nara, 14-15 January 2015)	14	2015-01-14
Session 15 (London, 4-5 March 2015)	15	2015-03-04
Session 16 (Berlin, 17-18 June 2015)	16	2015-06-17
Session 17 (Brussels, 10 September 2015)	17	2015-09-10
Session 18 (Geneva, 5 November 2015)	18	2015-11-05