Year	days
2009	110.56521739130434
2010	104.6304347826087
2011	103.56521739130434
2012	95.72340425531915
2013	110.96686274509803
2014	99.33941176470589
2015	93.09019607843136
2016	89.48666666666666
2017	87.65098039215685
2018	84.90882352941178
2019	80.62274509803922