Year	Percent
1995	5.601
1996	5.889
1997	6.21
1998	6.529
1999	5.795
2000	5.671
2001	5.918
2002	6.63
2003	6.582
2004	6.612
2005	7
2006	6.335
2007	5.834
2008	6.137
2009	6.212
2010	5.891