Year	Percent
2008-01-01	3.6801100000000000
2009-01-01	3.8265300000000004
2010-01-01	3.8265300000000004
2011-01-01	3.8265300000000004
2012-01-01	3.8265300000000004
2013-01-01	3.8265300000000004
2014-01-01	3.8265300000000004
2015-01-01	3.2835800000000000
2016-01-01	3.0775200000000003