Year	Percent
1990	10.5
1991	10.9
1992	11.3
1993	11.7
1994	12.1
1995	12.5
1996	12.5
1997	12.5
1998	12.5
1999	12.5
2000	8.1
2004	8.37
2006	17.36
2008	17.04