Year	Number
1996	5
1998	5
2000	6
2002	8
2003	8
2004	9
2005	10
2006	11
2007	11
2008	12
2009	12
2010	12
2011	13
2012	15
2013	16
2014	13
2015	13
2016	12
2017	13
2018	13
2019	12
2020	11
2021	12
2022	12