Year	Number of
2000	13
2001	14
2002	15
2003	12
2004	16
2005	15
2006	9
2007	17
2008	18
2009	18
2010	14
2011	22
2012	19
2013	24
2014	23
2015	20
2016	23
2017	28
2018	25
2019	26
2020	27