Year	Number
1996	7
1998	7
2000	8
2002	10
2003	10
2004	12
2005	12
2006	14
2007	14
2008	14
2009	15
2010	15
2011	15
2012	15
2013	15
2014	12
2015	12
2016	13
2017	13
2018	13
2019	12
2020	11
2021	11
2022	11