Year	Percent
1995	9.034
1996	8.823
1997	8.786
1998	9.038
1999	8.904
2000	8.844
2001	9.317
2002	9.599
2003	9.781
2004	9.775
2005	9.825
2006	9.968
2007	10.04
2008	10.25
2009	11.4
2010	11.29