Year	Percent
1995	9.03
1996	8.749
1997	12.98
1998	13.61
1999	11.79
2000	12.67
2001	12.37
2002	11.22
2003	11.02
2004	11.28
2005	11.75
2006	10.77
2007	10.21
2008	9.171
2009	8.533
2010	8.036