Year	Percent
1995	3.41
1996	2.849
1997	2.629
1998	2.21
1999	2.675
2000	2.918
2001	3.047
2002	3.165
2003	3.951
2004	2.961
2005	3.824
2006	3.578
2007	2.619
2008	4.004
2009	4.965
2010	4.961