Year	Number of
1985	4840
1986	4427
1987	3640
1988	2815
1989	3703
1990	2671
1991	2500
1992	1756
1993	5500
1995	1540
1996	9625
1997	9947
1998	11150
1999	10040
2000	10800
2001	13060
2002	13280
2003	14490
2004	15030
2005	14920
2006	14670
2007	15200