Year	Number
1996	5
1998	5
2000	5
2002	9
2003	8
2004	10
2005	10
2006	13
2007	14
2008	14
2009	15
2010	16
2011	17
2012	16
2013	16
2014	13
2015	12
2016	12
2017	12
2018	12
2019	11
2020	10
2021	9
2022	9