Year	Number
1996	7
1998	7
2000	8
2002	10
2003	10
2004	12
2005	13
2006	14
2007	14
2008	14
2009	15
2010	15
2011	16
2012	17
2013	17
2014	14
2015	14
2016	14
2017	14
2018	14
2019	13
2020	12
2021	12
2022	12