Year	Number
1996	5
1998	5
2000	6
2002	7
2003	9
2004	10
2005	10
2006	11
2007	12
2008	13
2009	13
2010	13
2011	11
2012	12
2013	12
2014	10
2015	10
2016	11
2017	10
2018	10
2019	10
2020	9
2021	9
2022	9