Year	Percent
1995	9.052
1996	11.13
1997	9.142
1998	9.806
1999	9.313
2000	8.763
2001	9.812
2002	11.94
2003	12.52
2004	15.34
2005	18.66
2006	16.21
2007	14.85
2008	16.26
2009	13.56
2010	13.49