Year	days
2004	131.13333333333333
2005	125.96
2006	117.52941176470588
2007	106.92156862745098
2008	99.94117647058823
2009	95.5576923076923
2010	85.22641509433963
2011	81.94339622641509
2012	80.23636363636363
2013	78.25571428571428
2014	75.54142857142857
2015	77.1021052631579
2016	77.11964912280702
2017	75.76877192982455
2018	70.78631578947369
2019	69.30385964912281