Year	Number
1996	2
1998	2
2000	1
2002	2
2003	2
2004	4
2005	6
2006	8
2007	8
2008	8
2009	8
2010	8
2011	8
2012	9
2013	9
2014	9
2015	9
2016	9
2017	9
2018	9
2019	9
2020	8
2021	7
2022	7