Year	Percent
1995	4.233
1996	3.493
1997	3.862
1998	4.513
1999	5.653
2000	5.69
2001	5.96
2002	5.654
2003	5.855
2004	5.572
2005	5.428
2006	5.735
2007	5.805
2008	5.395
2009	6.015
2010	4.906