Year	Percent
1995	9.267
1996	19.42
1997	19.42
1998	19.42
1999	19.42
2000	21.15
2001	18.86
2002	17.33
2003	16.83
2004	16.72
2005	15.55
2006	16.63
2007	15.35
2008	15.73
2009	19.46
2010	16.99