Year	days
2009	90.07142857142857
2010	90.07142857142857
2011	88.43103448275862
2012	86.89830508474576
2013	86.18870967741934
2014	81.55967741935483
2015	77.33870967741936
2016	75.66370967741935
2017	74.5725806451613
2018	72.18253968253968
2019	69.63809523809523