Year	Number of
2000	6
2001	6
2002	6
2003	6
2004	7
2005	7
2006	7
2007	7
2008	7
2009	6
2010	11
2011	11
2012	8
2013	9
2014	8
2015	8
2016	5
2017	5
2018	5
2019	6
2020	6