Year	Number of
1990	2126
1991	2727
1992	3305
1993	3862
1994	4389
1995	4865
1996	4386
1997	4912
1998	5257
1999	5148
2000	4707
2001	4173
2002	3089
2003	1634
2004	1319
2005	985
2006	949
2007	911