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