Year	Number
1996	3
1998	3
2000	3
2002	4
2003	4
2004	5
2005	7
2006	7
2007	7
2008	7
2009	7
2010	7
2011	7
2012	7
2013	7
2014	7
2015	7
2016	7
2017	7
2018	7
2019	7
2020	7
2021	7
2022	7