Year	Number
1996	8
1998	8
2000	9
2002	10
2003	10
2004	12
2005	12
2006	13
2007	14
2008	14
2009	15
2010	15
2011	16
2012	16
2013	15
2014	13
2015	13
2016	12
2017	12
2018	12
2019	11
2020	10
2021	10
2022	10