Year	Number of
2000	5
2001	6
2002	5
2003	2
2004	5
2005	6
2006	4
2007	5
2008	9
2009	10
2010	10
2011	8
2012	6
2013	5
2014	5
2015	7
2016	7
2017	8
2018	7
2019	8
2020	7