Year	Percent
1995	5.06
1996	4.609
1997	4.537
1998	5.057
1999	4.474
2000	4.639
2001	5.024
2002	5.001
2003	4.572
2004	5.097
2005	4.576
2006	4.934
2007	4.636
2008	4.381
2009	3.853
2010	4.091