Year	Percent
1995	23.2
1996	21.82
1997	24.62
1998	25.2
1999	25.42
2000	25.39
2001	24.59
2002	26.2
2003	25.22
2004	23.98
2005	24.07
2006	26.13
2007	26.49
2008	25.04
2009	24.9
2010	25.26