Year	Percent
1995	3.258
1996	3.343
1997	3.338
1998	3.597
1999	3.71
2000	3.015
2001	2.828
2002	2.983
2003	2.841
2004	2.821
2005	2.734
2006	2.718
2007	2.598
2008	2.54
2009	2.195
2010	2.196