Year	Measure
1995	8.61
1996	8.87
1997	8.92
1998	9
1999	8.9
2000	9.1
2001	8.6
2002	8.5
2003	8.8
2004	8.9
2005	8.9
2006	8.8
2007	8.7
2008	7.9
2009	8.6
2010	8.6
2011	8.98985