Year	Percent
1995	8.327
1996	8.211
1997	7.949
1998	8.062
1999	8.088
2000	7.958
2001	8.297
2002	8.87
2003	9.773
2004	9.968
2005	9.829
2006	9.722
2007	9.681
2008	9.887
2009	11.98
2010	11.92