Year	Measure
1995	6.72
1996	7.05
1997	6.57
1998	5.8
1999	6
2000	6.4
2001	7.1
2002	7.1
2003	7
2004	6.9
2005	7.3
2006	7.6
2007	7.5
2008	7.3
2009	7.7
2010	7.8
2011	8.0409