Year	Percent
2010-01-01	4.56735158136539
2011-01-01	4.25661764666098
2012-01-01	4.17862866362973
2013-01-01	4.27170783285445
2014-01-01	4.40170026739524
2015-01-01	4.34676805477218
2016-01-01	4.46477343751992
2017-01-01	4.61195466256013