Year	Number
1996	1
1998	1
2000	1
2002	2
2003	2
2004	4
2005	5
2006	5
2007	6
2008	5
2009	8
2010	8
2011	8
2012	8
2013	9
2014	9
2015	8
2016	9
2017	9
2018	9
2019	9
2020	7
2021	7
2022	7