Year	Percent
1995	8.662
1996	8.204
1997	10.22
1998	9.467
1999	10.53
2000	9.497
2001	6.698
2002	8.697
2003	8.679
2004	9.575
2005	5.715
2006	6.562
2007	6.501
2008	6.382
2009	6.235
2010	6.155