Year	Number
1996	3
1998	3
2000	3
2002	3
2003	3
2004	5
2005	6
2006	7
2007	7
2008	8
2009	7
2010	8
2011	8
2012	8
2013	9
2014	8
2015	8
2016	7
2017	8
2018	8
2019	7
2020	7
2021	7
2022	7