Year	Measure
1995	5.62
1996	5.68
1997	4.95
1998	5.2
1999	5
2000	5
2001	4.8
2002	4.8
2003	4.4
2004	4.6
2005	4.5
2006	4.6
2007	5.1
2008	4.9
2009	4.7
2010	4.5
2011	4.08028