Year	Percent
1995	5.959
1996	6.295
1997	6.987
1998	6.967
1999	6.609
2000	5.504
2001	9.862
2002	6.947
2003	7.504
2004	6.97
2005	7.092
2006	7.843
2007	5.307
2008	6.177
2009	5.629
2010	6.864