Year	Percent
1995	3.861
1996	5.159
1997	4.64
1998	4.419
1999	4.43
2000	4.475
2001	4.696
2002	4.859
2003	4.969
2004	4.726
2005	4.747
2006	4.681
2007	4.692
2008	5.118
2009	4.915
2010	5.135