Year	Percent
1995	8.086
1996	7.129
1997	8.757
1998	7.998
1999	8.008
2000	7.644
2001	7.729
2002	7.981
2003	8.349
2004	8.211
2005	8.695
2006	8.952
2007	8.925
2008	8.851
2009	8.758
2010	8.79