Year	Measure
1995	8.8
1996	8.6
1997	8.86
1998	8.7
1999	8.7
2000	8.3
2001	8.5
2002	8.6
2003	8.8
2004	8.8
2005	8.8
2006	8.7
2007	8.6
2008	8.7
2009	8.7
2010	8.7
2011	8.84416