Year	Measure
2000	0.283
2001	0.298
2002	0.306
2003	0.31
2004	0.325
2005	0.346
2006	0.362
2007	0.378
2008	0.393
2009	0.401
2010	0.411
2011	0.422
2012	0.427
2013	0.435
2014	0.441
2015	0.448