Year	Number
2000	10
2001	10
2002	10
2003	10
2004	10
2005	10
2006	9
2007	9
2008	9
2009	9
2010	9
2011	8
2012	8
2013	8
2014	8
2015	8
2016	8
2017	7
2018	7
2019	7
2020	7