Year	Number
1996	5
1998	5
2000	5
2002	6
2003	8
2004	10
2005	12
2006	15
2007	15
2008	15
2009	15
2010	16
2011	16
2012	17
2013	18
2014	16
2015	16
2016	15
2017	15
2018	14
2019	14
2020	12
2021	12
2022	12