Year	Number
1996	8
1998	8
2000	9
2002	10
2003	11
2004	12
2005	12
2006	14
2007	14
2008	14
2009	14
2010	15
2011	16
2012	16
2013	15
2014	12
2015	13
2016	12
2017	12
2018	10
2019	10
2020	9
2021	10
2022	10