Year	Measure
1995	9.32
1996	9.33
1997	9.94
1998	10
1999	10
2000	9.8
2001	9.5
2002	9.5
2003	9.5
2004	9.5
2005	9.5
2006	9.5
2007	9.4
2008	9.3
2009	9.3
2010	9.3
2011	9.39208