Year	Number of
1983	2838
1984	2719
1985	2722
1986	3079
1987	7322
1988	2728
1989	1323
1994	2023
1995	2504
1996	3920
1997	4450
1998	4320
1999	4802
2000	5686
2001	6852
2002	7391
2003	9278
2004	11747
2005	12904
2006	11864
2007	11130
2008	12481
2009	11075
2010	10139
2011	11653
2012	11975
2013	12994
2014	12903
2015	13982
2016	14170
2017	16485
2018	16614
2019	16918
2020	17203