Year	Percent
1995	3.532
1996	3.841
1997	3.997
1998	3.735
1999	3.496
2000	3.395
2001	3.316
2002	3.7
2003	3.575
2004	3.506
2005	3.544
2006	3.491
2007	3.562
2008	3.97
2009	4.172
2010	3.883