Year	days
2009	113.71511627906976
2010	107.63372093023256
2011	105.70689655172414
2012	104.31460674157303
2013	104.78714285714288
2014	99.50428571428571
2015	92.3444623655914
2016	90.53645161290322
2017	88.38080645161291
2018	84.87582887700535
2019	82.50336898395723