Year	Number
1996	4
1998	4
2000	5
2002	7
2003	7
2004	8
2005	9
2006	10
2007	11
2008	10
2009	12
2010	12
2011	12
2012	12
2013	13
2014	10
2015	9
2016	10
2017	10
2018	10
2019	10
2020	8
2021	8
2022	8