Year	Percent
1995	5.337
1996	5.455
1997	6.28
1998	8.072
1999	7.202
2000	7.338
2001	7.695
2002	7.605
2003	7.298
2004	7.007
2005	6.726
2006	6.441
2007	6.198
2008	5.944
2009	5.557
2010	5.742