Year	Number
1996	7
1998	7
2000	8
2002	10
2003	10
2004	10
2005	10
2006	12
2007	12
2008	13
2009	13
2010	13
2011	13
2012	14
2013	13
2014	12
2015	12
2016	12
2017	13
2018	13
2019	12
2020	11
2021	11
2022	11