Year	Number
1996	7
1998	7
2000	8
2002	9
2003	10
2004	11
2005	13
2006	16
2007	16
2008	16
2009	16
2010	16
2011	17
2012	17
2013	16
2014	14
2015	14
2016	12
2017	12
2018	11
2019	11
2020	10
2021	10
2022	10