Year	Measure
1995	8.57
1996	8.44
1997	8.22
1998	8.7
1999	8.6
2000	8.7
2001	8.3
2002	8.7
2003	8.7
2004	8.6
2005	8.6
2006	8.6
2007	8.4
2008	7.7
2009	7.7
2010	7.6
2011	7.77508