Year	Number
1996	5
1998	5
2000	7
2002	9
2003	10
2004	11
2005	11
2006	12
2007	12
2008	13
2009	13
2010	13
2011	11
2012	12
2013	12
2014	11
2015	11
2016	10
2017	9
2018	9
2019	10
2020	9
2021	9
2022	9