Year	Measure
1995	5.56
1996	6.53
1997	6.97
1998	6.5
1999	6.7
2000	6.4
2001	6.3
2002	6.3
2003	6.6
2004	6.3
2005	6.5
2006	6.6
2007	6.5
2008	6.1
2009	5.8
2010	6
2011	6.09761