Year	Measure
1995	2.16
1996	2.43
1997	2.88
1998	3.5
1999	3.4
2000	3.1
2001	3.5
2002	3.5
2003	3.4
2004	3.4
2005	3.2
2006	3.3
2007	3.5
2008	3.6
2009	3.6
2010	3.5
2011	3.63557