Year	Number
1996	6
1998	5
2000	5
2002	7
2003	7
2004	8
2005	8
2006	10
2007	10
2008	9
2009	10
2010	10
2011	10
2012	10
2013	10
2014	10
2015	10
2016	10
2017	10
2018	10
2019	10
2020	9
2021	8
2022	8