Year	days
2003	69.91304347826087
2004	65.93333333333334
2005	70.65625
2006	68.375
2007	63.90625
2008	64.15625
2009	61.39393939393939
2010	55.09090909090909
2011	43.18181818181818
2012	42
2013	37.65675675675676
2014	33.17027027027027
2015	33.1
2016	33.52421052631579
2017	31.997894736842106
2018	30.89263157894737
2019	30.45342105263158