Year	Percent
1995	3.761
1996	3.465
1997	3.694
1998	4.438
1999	3.668
2000	2.511
2001	3.611
2002	3.565
2003	3.23
2004	2.757
2005	2.379
2006	2.253
2007	2.133
2008	1.924
2009	3.82
2010	2.629