Year	Percent
1995	7.929
1996	8.277
1997	9.335
1998	13.45
1999	9.113
2000	8.172
2001	9.832
2002	9.084
2003	17.62
2004	14.62
2005	15.57
2006	22.45
2007	22.01
2008	21.9
2009	20.08
2010	20.08