Year	Percent
2003-01-01	8.90785191717450
2004-01-01	9.28325161563301
2005-01-01	9.26949605433247
2006-01-01	9.11215671232876
2007-01-01	8.08824934847484
2008-01-01	7.44144691188607
2009-01-01	8.80226799492976
2010-01-01	9.06629182405753
2011-01-01	9.11611522373459
2012-01-01	9.35738380551664
2013-01-01	9.78941140774742
2014-01-01	10.02918153985980
2015-01-01	9.88394881250528
2016-01-01	9.85286632349724
2017-01-01	9.33710763231016