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