Year	Number
1996	6
1998	7
2000	8
2002	8
2003	9
2004	10
2005	10
2006	13
2007	13
2008	13
2009	13
2010	13
2011	14
2012	14
2013	13
2014	12
2015	12
2016	12
2017	12
2018	12
2019	12
2020	10
2021	9
2022	8