Year	Percent
2011-01-01	7.8514600000000000
2012-01-01	7.8514600000000000
2013-01-01	7.8514600000000000
2014-01-01	7.6845800000000000
2015-01-01	7.6845800000000000
2016-01-01	7.6845800000000000
2017-01-01	7.4722100000000005