Year	Percent
2003-01-01	55.1358957853549
2004-01-01	55.6409072256801
2005-01-01	56.0193733376239
2006-01-01	56.3162168429999
2007-01-01	56.7738580180209
2008-01-01	57.7092474320454
2009-01-01	57.1939582359756
2010-01-01	58.3135873931510
2011-01-01	58.6282870556436
2012-01-01	58.9187153977372
2013-01-01	58.4953257765815
2014-01-01	57.3459744153194