Year	Number of
1990	44510
1991	26560
1992	16170
1993	15790
1994	12860
1995	7329
1996	6293
1997	4805
1998	25020
1999	13450
2000	7362
2001	4895
2002	4624
2003	3819
2004	3406
2005	2967