Year	Number of
1990	35400
1991	38040
1992	42390
1993	46260
1994	50190
1995	54160
1996	57220
1997	60940
1998	63280
1999	67150
2000	68750
2001	72560
2002	56250
2003	52870
2004	52760
2005	51990
2006	49330
2007	46120