Year	Percent
1995	7.187
1996	7.788
1997	7.201
1998	7.118
1999	6.833
2000	5.429
2001	4.133
2002	4.191
2003	8.029
2004	8.328
2005	5.914
2006	7.252
2007	7.601
2008	8.838
2009	6.47
2010	6.611