Year	Number
1996	6
1998	7
2000	11
2002	12
2003	12
2004	12
2005	12
2006	13
2007	13
2008	13
2009	14
2010	14
2011	13
2012	15
2013	15
2014	14
2015	14
2016	12
2017	12
2018	12
2019	12
2020	12
2021	12
2022	12