Year	Percent
1995	5.517
1996	5.5
1997	5.298
1998	5.124
1999	5.25
2000	4.923
2001	4.877
2002	4.942
2003	5.116
2004	4.479
2005	4.11
2006	3.825
2007	3.799
2008	3.374
2009	3.549
2010	3.407