Year	Percent
2005-01-01	6.17008549957783
2006-01-01	6.40198073507030
2007-01-01	6.58616336086402
2008-01-01	7.08084597883082
2009-01-01	9.43827065580898
2010-01-01	9.32739492525466
2011-01-01	9.30454900533369
2012-01-01	8.91079613591299
2013-01-01	8.72643536091969
2014-01-01	8.76094849105910
2015-01-01	7.83394864139397
2016-01-01	7.15676379913940
2017-01-01	6.30939200002076