Year	Number
1996	4
1998	4
2000	5
2002	7
2003	7
2004	9
2005	10
2006	12
2007	13
2008	13
2009	14
2010	15
2011	15
2012	15
2013	16
2014	12
2015	11
2016	11
2017	12
2018	12
2019	11
2020	10
2021	11
2022	10