Year	Percent
1995	5.363
1996	5.551
1997	7.1
1998	6.62
1999	5.796
2000	5.422
2001	5.674
2002	5.989
2003	5.609
2004	5.188
2005	5.212
2006	5.305
2007	5.38
2008	4.833
2009	5.573
2010	5.075