Year	Number
1996	5
1998	5
2000	5
2002	5
2003	5
2004	5
2005	5
2006	7
2007	7
2008	7
2009	7
2010	8
2011	8
2012	8
2013	8
2014	8
2015	8
2016	8
2017	8
2018	8
2019	8
2020	7
2021	7
2022	7