Year	Percent
1995	11.55
1996	11.8
1997	11.86
1998	11.97
1999	8.867
2000	8.29
2001	8.038
2002	7.69
2003	7.173
2004	7.202
2005	5.737
2006	6.622
2007	7.708
2008	9.847
2009	9.888
2010	9.76