Year	Number
1996	3
1998	4
2000	5
2002	5
2003	7
2004	9
2005	9
2006	10
2007	10
2008	11
2009	11
2010	11
2011	9
2012	10
2013	10
2014	10
2015	10
2016	10
2017	9
2018	9
2019	10
2020	8
2021	8
2022	8