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