Year	Percent
1995	10.91
1996	10.99
1997	14.15
1998	14.2
1999	13.71
2000	13.45
2001	13.49
2002	13.26
2003	12.81
2004	12.36
2005	11.79
2006	11.33
2007	11.65
2008	10.94
2009	9.828
2010	9.991