Year	Number
1996	1
1998	1
2000	1
2002	1
2003	1
2004	3
2005	5
2006	8
2007	8
2008	8
2009	9
2010	9
2011	9
2012	9
2013	10
2014	10
2015	10
2016	10
2017	10
2018	10
2019	9
2020	8
2021	8
2022	8