Year	Number
1996	4
1998	4
2000	5
2002	5
2003	6
2004	8
2005	10
2006	12
2007	13
2008	13
2009	13
2010	14
2011	15
2012	15
2013	14
2014	13
2015	13
2016	12
2017	12
2018	12
2019	12
2020	12
2021	12
2022	12