Year	Number
1996	7
1998	7
2000	8
2002	10
2003	10
2004	12
2005	13
2006	15
2007	15
2008	16
2009	16
2010	16
2011	17
2012	17
2013	16
2014	13
2015	13
2016	13
2017	12
2018	12
2019	12
2020	11
2021	10
2022	10