Year	Percent
1995	35.6
1996	40.79
1997	51.09
1998	50.73
1999	54.21
2000	46.54
2001	46.08
2002	47.59
2003	43.39
2004	44.67
2005	43.54
2006	45.15
2007	45.15
2008	45.15
2009	45.2