| Session 9 (Geneva, 12-13 January 2015) | 9 | 2015-01-12 |
| Session 10 (Brussels, 18-20 March 2015) | 10 | 2015-03-18 |
| Session 11 (Geneva, 9 June 2015) | 11 | 2015-06-09 |
| Session 12 (Brussels, 8-10 September 2015) | 12 | 2015-09-08 |
| Session 13 (Brussels, 26-27 November 2015) | 13 | 2015-11-26 |