Year	Percent
1995	6.694
1996	6.411
1997	6.401
1998	6.418
1999	6.349
2000	6.314
2001	6.422
2002	6.797
2003	7.132
2004	6.903
2005	6.934
2006	6.694
2007	6.522
2008	6.819
2009	7.993
2010	7.875