Year	Percent
1995	10.67
1996	10.71
1997	11.45
1998	11.45
1999	10.4
2000	9.87
2001	9.327
2002	8.623
2003	8.228
2004	8.299
2005	8.059
2006	8.146
2007	8.418
2008	7.699
2009	7.416
2010	7.029