Year	Percent
1995	4.691
1996	4.331
1997	4.159
1998	3.68
1999	4.253
2000	3.883
2001	4.131
2002	4.785
2003	4.943
2004	4.996
2005	5.663
2006	4.96
2007	4.824
2008	4.453
2009	5.776
2010	5.675