Year	Percent
1995	12.06
1996	13.57
1997	11.38
1998	9.602
1999	7.885
2000	8.89
2001	11.93
2002	10.1
2003	10.7
2004	13
2005	11.36
2006	11.64
2007	11.39
2008	12.22
2009	10.02
2010	10.58