Year	Measure
1995	7.79
1996	7.66
1997	7.61
1998	7.5
1999	7.5
2000	7.8
2001	7.6
2002	7.7
2003	7.5
2004	7.5
2005	7.6
2006	7.3
2007	7.2
2008	7.3
2009	7.5
2010	7.1
2011	7.13568