Year	Number of
1990	1119
1991	1515
1992	1976
1993	2460
1994	2890
1995	3166
1996	3510
1997	3615
1998	3708
1999	3696
2000	3649
2001	3513
2002	3198
2003	2880
2004	2547
2005	2210
2006	2020
2007	1843