Year	days
2009	99
2010	97.6875
2011	96.76470588235294
2012	95.79411764705883
2013	90.06944444444444
2014	86.73611111111111
2015	84.01388888888889
2016	86.94861111111112
2017	84.73611111111111
2018	82.51388888888889
2019	81.48611111111111