Year	Percent
1995	9.695
1996	9.977
1997	10.22
1998	9.686
1999	9.577
2000	9.696
2001	9.738
2002	9.627
2003	9.397
2004	9.725
2005	9.953
2006	9.776
2007	9.821
2008	10.2
2009	10.4
2010	10.4