Year	Number
2000	27
2001	25
2002	25
2003	23
2004	21
2005	19
2006	17
2007	15
2008	14
2009	13
2010	12
2011	12
2012	11
2013	10
2014	9
2015	9
2016	9
2017	9
2018	7
2019	7
2020	7