Year	Number
1996	3
1998	3
2000	3
2002	3
2003	4
2004	6
2005	7
2006	8
2007	8
2008	8
2009	8
2010	8
2011	8
2012	8
2013	9
2014	9
2015	9
2016	9
2017	10
2018	12
2019	12
2020	11
2021	11
2022	12