Year	Number
1983	5
1984	10
1985	7
1989	6
1990	16
1992	20
1993	30
2000	11
2001	12
2002	11
2003	12
2004	18
2005	24
2006	21
2007	37
2008	13
2009	15
2010	18
2018	34
2019	4
2020	14
2021	10