Year	Number
1996	5
1998	5
2000	5
2002	5
2003	6
2004	7
2005	10
2006	12
2007	13
2008	12
2009	12
2010	12
2011	12
2012	13
2013	13
2014	11
2015	11
2016	9
2017	9
2018	8
2019	8
2020	8
2021	8
2022	8