Year	Measure
1995	7.12
1996	7.01
1997	7.28
1998	7.8
1999	7.7
2000	7.7
2001	7.9
2002	8.2
2003	8
2004	8
2005	8.3
2006	8.3
2007	8.3
2008	8.1
2009	8.2
2010	8.4
2011	8.38981