Year	Number
1996	7
1998	7
2000	8
2002	10
2003	10
2004	11
2005	11
2006	13
2007	13
2008	12
2009	14
2010	14
2011	14
2012	15
2013	15
2014	13
2015	13
2016	13
2017	13
2018	13
2019	12
2020	11
2021	10
2022	10