Year	Percent
2005-01-01	3.90520739729132
2006-01-01	3.87744647425310
2007-01-01	4.01644920917179
2008-01-01	4.06899496374411
2009-01-01	5.36238844825981
2010-01-01	5.20711110738837
2011-01-01	5.15660644734884
2012-01-01	4.91589418863023
2013-01-01	4.98777646340102
2014-01-01	4.87441043515190
2015-01-01	4.47281278467591
2016-01-01	3.94310323823892
2017-01-01	3.62358658624763