Year	Number
1996	3
1998	3
2000	3
2002	3
2003	3
2004	5
2005	8
2006	8
2007	8
2008	9
2009	10
2010	10
2011	10
2012	11
2013	13
2014	11
2015	11
2016	10
2017	9
2018	7
2019	7
2020	7
2021	8
2022	8