Year	Months
2011-01-01	6.292130821031620
2012-01-01	3.526969944053330
2013-01-01	2.485783550610860
2014-01-01	1.416976237751200
2015-01-01	0.319444160157706
2016-01-01	0.163032234541826
2017-01-01	0.115692020295485
2018-01-01	0.374101000116922
2019-01-01	0.370478557260454