Year	Number of
1990	95630
1991	84720
1992	76270
1993	66450
1994	63410
1995	59550
1996	47450
1997	45070
1998	41280
1999	49810
2000	52980
2001	52710
2002	59490
2003	51360
2004	53480
2005	56250
2006	58560
2007	60970