Year	Number of
1990	1889
1991	1890
1992	1887
1993	1897
1994	1944
1995	2046
1996	2216
1997	2450
1998	2720
1999	2986
2000	3217
2001	3397
2002	3534
2003	3652
2004	3785
2005	3963
2006	4196
2007	4474