Year	Number
1996	2
1998	2
2000	2
2002	3
2003	3
2004	4
2005	7
2006	9
2007	9
2008	9
2009	9
2010	9
2011	9
2012	9
2013	9
2014	9
2015	9
2016	9
2017	9
2018	9
2019	9
2020	8
2021	8
2022	8