Year	days
2004	64.14285714285714
2005	59.5
2006	59.5
2007	58
2008	57.285714285714285
2009	57.285714285714285
2010	55
2011	50.57142857142857
2012	50.92857142857143
2013	59.16875
2014	57.79375
2015	56.54375
2016	56.91875
2017	56.885
2018	60.26625
2019	56.8053125