Year	Number of
1990	12040
1991	11680
1992	11540
1993	11400
1994	10870
1995	10220
1996	9714
1997	9224
1998	8712
1999	8129
2000	7167
2001	6433
2002	5625
2003	5362
2004	4978
2005	4562
2006	4176
2007	3789