Year	Measure
1995	8.76
1996	8.76
1997	8.61
1998	8.9
1999	8.9
2000	8.6
2001	8.4
2002	8.5
2003	8.8
2004	9.1
2005	9.1
2006	9.1
2007	9
2008	9
2009	9
2010	8.7
2011	8.80167