Year	Number
1998	1
2000	1
2002	1
2003	2
2004	2
2005	3
2006	7
2007	8
2008	11
2009	11
2010	12
2011	11
2012	11
2013	11
2014	10
2015	11
2016	9
2017	9
2018	9
2019	9
2020	9
2021	8
2022	8