Year	Number
1996	7
1998	7
2000	7
2002	10
2003	11
2004	13
2005	14
2006	17
2007	17
2008	17
2009	17
2010	17
2011	17
2012	18
2013	18
2014	15
2015	16
2016	15
2017	15
2018	15
2019	15
2020	13
2021	13
2022	13