Year	Percent
1995	3.645
1996	3.555
1997	3.354
1998	3.701
1999	3.544
2000	3.073
2001	3.09
2002	3.194
2003	3.186
2004	2.986
2005	2.602
2006	2.34
2007	2.466
2008	2.088
2009	3.015
2010	2.766