Year	Percent
1995	8.073
1996	7.908
1997	7.142
1998	6.991
1999	6.829
2000	7.014
2001	7.748
2002	7.105
2003	7.068
2004	6.861
2005	6.265
2006	7.022
2007	8.517
2008	8.807
2009	9.374
2010	11.08