Year	Percent
1995	12.9
1996	12
1997	12
1998	12
1999	11.85
2000	12.06
2001	9.369
2002	8.82
2003	9.836
2004	10.62
2005	10.2
2006	8.751
2007	9.675
2008	10.07
2009	7.959
2010	16.74