Year	Percent
1995	10.62
1996	9.398
1997	9.049
1998	10.17
1999	10.48
2000	9.756
2001	10.03
2002	11.22
2003	9.089
2004	10.11
2005	10.91
2006	9.695
2007	7.639
2008	7.106
2009	7.32
2010	7.256