Year	Number
1996	5
1998	6
2000	7
2002	8
2003	9
2004	10
2005	11
2006	12
2007	13
2008	13
2009	12
2010	13
2011	13
2012	14
2013	13
2014	11
2015	10
2016	12
2017	12
2018	12
2019	11
2020	9
2021	9
2022	10