Year	Number
1996	1
1998	1
2000	1
2002	2
2003	2
2004	4
2005	5
2006	7
2007	8
2008	8
2009	8
2010	8
2011	8
2012	9
2013	10
2014	10
2015	9
2016	10
2017	9
2018	9
2019	9
2020	9
2021	10
2022	10