Year	Percent
1995	6.342
1996	6.161
1997	5.938
1998	5.929
1999	6.115
2000	6.285
2001	6.668
2002	7.284
2003	6.955
2004	6.992
2005	6.963
2006	7.115
2007	6.967
2008	7.106
2009	5.902
2010	7.967