Year	days
2009	105.82758620689656
2010	104.72413793103448
2011	104.44067796610169
2012	103.1
2013	99.22075757575756
2014	99.06227272727271
2015	93.06045454545456
2016	90.1669696969697
2017	86.94454545454546
2018	81.78636363636365
2019	79.7078787878788