Year	Number
1996	2
1998	2
2000	2
2002	3
2003	3
2004	5
2005	6
2006	7
2007	7
2008	8
2009	8
2010	8
2011	9
2012	11
2013	12
2014	12
2015	12
2016	11
2017	12
2018	12
2019	12
2020	11
2021	10
2022	10