Year	Number of
2000	18
2001	12
2002	12
2003	3
2004	11
2005	11
2006	6
2007	11
2008	10
2009	10
2010	12
2011	5
2012	5
2013	6
2014	7
2015	7
2016	7
2017	8
2018	8
2019	11
2020	12