Year	days
2003	57.395833333333336
2004	55.3448275862069
2005	62.46969696969697
2006	60.044117647058826
2007	54.544117647058826
2008	52.529411764705884
2009	50.5
2010	46.970588235294116
2011	38.470588235294116
2012	36.15714285714286
2013	31.105555555555554
2014	26.049999999999997
2015	26.17027027027027
2016	25.34864864864865
2017	21.34864864864865
2018	21.24054054054054
2019	20.654054054054054