Year	Percent
1995	6.393
1996	6.313
1997	5.055
1998	6.007
1999	5.891
2000	6.492
2001	9.05
2002	7.249
2003	8.321
2004	8.346
2005	6.829
2006	8.23
2007	11
2008	11.1
2009	10.35
2010	13.41