Year	Percent
1995	11.5
1996	10.8
1997	8.405
1998	8.57
1999	8.663
2000	8.489
2001	8.402
2002	8.241
2003	7.239
2004	8.476
2005	8.273
2006	8.284
2007	7.852
2008	7.733
2009	8.434
2010	8.352