Year	Percent
1995	7.84
1996	7.551
1997	7.535
1998	7.409
1999	7.444
2000	7.519
2001	7.363
2002	9.281
2003	7.326
2004	7.578
2005	7.489
2006	7.202
2007	7.109
2008	7.142
2009	7.126
2010	7.126