Year	days
2004	138.96153846153845
2005	99.40384615384616
2006	105.16071428571429
2007	108.25
2008	100.98387096774194
2009	94.04838709677419
2010	81.390625
2011	74.36764705882354
2012	72.72857142857143
2013	69.88571428571429
2014	65.68571428571428
2015	65.65714285714286
2016	71.94285714285714
2017	68.98571428571428
2018	70.75714285714285
2019	70.21428571428571