Year	Percent
1995	4.766
1996	3.808
1997	3.981
1998	4.867
1999	5.951
2000	5.964
2001	4.773
2002	5.959
2003	5.371
2004	5.884
2005	5.054
2006	3.509
2007	4.379
2008	4.345
2009	4.239
2010	4.413