Year	Number
1996	4
1998	3
2000	4
2002	5
2003	5
2004	7
2005	8
2006	10
2007	11
2008	12
2009	12
2010	12
2011	12
2012	13
2013	14
2014	13
2015	12
2016	12
2017	11
2018	11
2019	11
2020	11
2021	12
2022	12