Year	Number
1996	3
1998	3
2000	3
2002	3
2003	3
2004	4
2005	7
2006	9
2007	10
2008	9
2009	9
2010	9
2011	9
2012	10
2013	10
2014	9
2015	9
2016	7
2017	7
2018	7
2019	8
2020	8
2021	8
2022	7