Year	Percent
1995	14.26
1996	14.54
1997	11.76
1998	12.88
1999	13.47
2000	14.46
2001	13.78
2002	11.97
2003	13.96
2004	14.14
2005	15.94
2006	16.36
2007	17.58
2008	17.66
2009	17.66
2010	17.66