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	11750
2005	12900
2006	11860
2007	11130