Year	Percent
1995	6.787
1996	9.482
1997	7.993
1998	6.94
1999	6.18
2000	6.323
2001	7.103
2002	7.495
2003	8.369
2004	7.978
2005	7.461
2006	5.924
2007	5.038
2008	5.188
2009	5.492
2010	5.683