Year	Percent
1995	9.973
1996	9.747
1997	10.55
1998	11.3
1999	11.2
2000	11.41
2001	11.57
2002	11.69
2003	12.05
2004	13.44
2005	13.44
2006	13.67
2007	13.6
2008	13.29
2009	13.09
2010	12.97