Year	Number
1996	2
1998	2
2000	2
2002	2
2003	2
2004	2
2005	2
2006	3
2007	4
2008	4
2009	5
2010	5
2011	5
2012	5
2013	5
2014	4
2015	3
2016	2
2017	2
2018	1
2019	1
2020	1
2021	1
2022	2