Year	Percent
2010-01-01	4.24005583440719
2011-01-01	3.86591900130542
2012-01-01	3.86934929671719
2013-01-01	4.11100711741695
2014-01-01	4.24350716186597
2015-01-01	4.19480232631208
2016-01-01	4.37325352198621
2017-01-01	4.31930697810596