Year	Measure
1995	2.78
1996	2.63
1997	2.75
1998	2.9
1999	2.9
2000	2.8
2001	2.7
2002	2.7
2003	2.8
2004	2.8
2005	2.9
2006	3.3
2007	3.5
2008	3.4
2009	3.4
2010	3.3
2011	3.09909