Year	Number of
1980	16
1981	0
1982	16
1983	16
1984	10
1985	10
1986	24
1987	14
1988	10
1989	6
1990	41
1993	5
1995	8
1996	15
1997	18
1998	11
1999	21
2000	20
2001	19
2002	29
2003	10
2004	18
2005	14
2008	6
2009	15
2010	17
2011	21
2012	20
2013	24
2014	13
2015	8
2016	12
2017	16
2018	15
2019	14
2020	9