Year	Percent
2003-01-01	25.3163773257987
2004-01-01	24.2296044781733
2005-01-01	22.1358479720125
2006-01-01	22.4257711128751
2007-01-01	21.2009122801485
2008-01-01	18.0026960560483
2009-01-01	18.4693836972881
2010-01-01	16.0444616015151
2011-01-01	14.4653707656642
2012-01-01	13.4834298482937
2013-01-01	14.0188680243236
2014-01-01	13.3751284053811