Year	Percent
1995	5.059
1996	4.268
1997	4.556
1998	4.553
1999	5.183
2000	5.957
2001	5.473
2002	5.972
2003	5.64
2004	5.055
2005	5.783
2006	5.424
2007	4.8
2008	4.087
2009	5.361
2010	5.207