Year	Percent
1995	7.22
1996	7.409
1997	7.464
1998	7.631
1999	7.756
2000	8.032
2001	8.119
2002	8.355
2003	8.283
2004	8.536
2005	8.425
2006	8.455
2007	8.478
2008	8.727
2009	8.727
2010	8.727