Year	Measure
1995	2.99
1996	3.42
1997	5.03
1998	4.6
1999	4.7
2000	4.6
2001	5.5
2002	5.2
2003	5.3
2004	4.8
2005	5
2006	4.9
2007	5.2
2008	4.8
2009	4.3
2010	3.9
2011	3.90691