Year	Percent
1995	64.4
1996	59.21
1997	48.91
1998	49.27
1999	45.79
2000	53.46
2001	53.92
2002	52.41
2003	56.61
2004	55.33
2005	56.46
2006	54.85
2007	54.85
2008	54.85
2009	54.8