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