Year	Number
1996	6
1998	6
2000	7
2002	9
2003	9
2004	10
2005	11
2006	12
2007	14
2008	14
2009	14
2010	14
2011	13
2012	13
2013	14
2014	12
2015	12
2016	12
2017	12
2018	12
2019	12
2020	11
2021	12
2022	12