10-14 Jan 2011	GRPE | Session 61
15-18 Jan 2013	GRPE | Session 65
3-7 Jun 2013	GRPE | Session 66
7-10 Jan 2014	GRPE | Session 68
5-6 Jun 2014	GRPE | Session 69
13-16 Jan 2015	GRPE | Session 70
9-12 Jun 2015	GRPE | Session 71
7-10 Jun 2016	GRPE | Session 73
10-13 Jan 2017	GRPE | Session 74
6-9 Jun 2017	GRPE | Session 75
9-12 Jan 2018	GRPE | Session 76
4-8 Jun 2018	GRPE | Session 77
7-11 Jan 2019	GRPE | Session 78
24-28 Jun 2019	WP.29 | Session 178
12-14 Nov 2019	WP.29 | Session 179
14-17 Jan 2020	GRPE | Session 80
9-12 Mar 2020	WP.29 | Session 180
9-12 Jun 2020	GRPE | Session 81
24 Jun 2020	WP.29 | Session 181
10-12 Nov 2020	WP.29 | Session 182
12-15 Jan 2021	GRPE | Session 82
9-11 Mar 2021	WP.29 | Session 183
1-4 Jun 2021	GRPE | Session 83
22-24 Jun 2021	WP.29 | Session 184
11-14 Jan 2022	GRPE | Session 85
30 May-2 Jun 2022	GRPE | Session 86
10-13 Jan 2023	GRPE | Session 87
30 May-2 Jun 2023	GRPE | Session 89
9-12 Jan 2024	GRPE | Session 90
24-28 Jun 2024	WP.29 | Session 193
14-16 Oct 2024	GRPE | Session 91
25-28 Mar	GRPE | Session 92