Year	Number
1996	4
1998	4
2000	4
2002	5
2003	5
2004	6
2005	8
2006	10
2007	10
2008	10
2009	10
2010	10
2011	10
2012	10
2013	10
2014	10
2015	10
2016	9
2017	9
2018	8
2019	8
2020	7
2021	7
2022	7