Year	days
2003	38.5
2004	49.64705882352941
2005	63.56666666666667
2006	63.25
2007	57.85294117647059
2008	55.628571428571426
2009	53.4
2010	50.91428571428571
2011	43.945945945945944
2012	43.18421052631579
2013	29.25
2014	23.210526315789473
2015	20.157894736842106
2016	18.355263157894736
2017	18.039473684210527
2018	17.82894736842105
2019	17.026315789473685