Year	Number
1996	1
1998	1
2000	1
2002	3
2003	3
2004	5
2005	6
2006	7
2007	7
2008	7
2009	7
2010	8
2011	8
2012	8
2013	9
2014	9
2015	9
2016	9
2017	9
2018	9
2019	9
2020	9
2021	8
2022	8