Year	Percent
1995	9.482
1996	8.999
1997	8.702
1998	7.322
1999	8.389
2000	11.33
2001	8.352
2002	9.12
2003	8.966
2004	10.32
2005	10.73
2006	10.2
2007	10.12
2008	10.88
2009	10.29
2010	9.399