Year	Percent
2000-01-01	47.4735564676400
2001-01-01	46.1442109263130
2002-01-01	44.3999843497246
2003-01-01	43.9921618094610
2004-01-01	44.3197784162172
2005-01-01	45.1582124356406
2006-01-01	38.9731924989011
2007-01-01	40.8852194769538
2008-01-01	42.5211741305350
2009-01-01	42.6603479538558
2010-01-01	42.2934793692375
2011-01-01	42.5194571906736
2012-01-01	42.5861656463486
2013-01-01	42.5515870305278