Year	Percent
1995	9.924
1996	8.873
1997	8.378
1998	9.224
1999	9.051
2000	9.907
2001	13.03
2002	9.86
2003	11.73
2004	11.24
2005	13.21
2006	11.3
2007	12.44
2008	12.5
2009	11.57
2010	11.93