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