Year	Number
1996	2
1998	2
2000	2
2002	2
2003	3
2004	6
2005	7
2006	9
2007	9
2008	9
2009	10
2010	12
2011	12
2012	12
2013	13
2014	12
2015	12
2016	11
2017	11
2018	11
2019	11
2020	10
2021	11
2022	10