Year	Percent
1995	7.488
1996	7.956
1997	8.256
1998	8.578
1999	9.065
2000	8.465
2001	8.784
2002	8.72
2003	8.858
2004	8.94
2005	8.814
2006	8.533
2007	8.452
2008	8.631
2009	9.161
2010	8.942