Year	Measure
1995	2.25
1996	1
1997	2.53
1998	2.7
1999	2.2
2001	2.3
2002	2.6
2003	2.5
2004	2.1
2005	2.1
2006	2.2
2007	2.4
2008	2.5
2009	2.4
2010	2.3
2011	2.46795