Year	Number
2000	23
2001	22
2002	33
2003	12
2004	21
2005	16
2006	21
2007	20
2008	7
2009	17
2010	20
2011	24
2012	23
2013	28
2014	15
2015	9
2016	14
2017	18
2018	17
2019	16
2020	10