Year	Percent
1995	8.987
1996	8.507
1997	7.743
1998	9.933
1999	8.213
2000	8.708
2001	10.85
2002	9.341
2003	8.817
2004	9.742
2005	9.383
2006	8.817
2007	8.855
2008	7.947
2009	8.324
2010	9.816