Year	Percent
2005-01-01	44.5997979257005
2006-01-01	45.6164905682295
2007-01-01	46.6905392190913
2008-01-01	47.4275735613965
2009-01-01	47.5152123084867
2010-01-01	47.9667457690203
2011-01-01	48.9095971554341
2012-01-01	49.1991174834054
2013-01-01	49.5969687216562