Year	days
2003	66.7840909090909
2004	61.28888888888889
2005	68.77358490566037
2006	65.01886792452831
2007	59.342592592592595
2008	55.52777777777778
2009	52.675925925925924
2010	50.361111111111114
2011	49.138888888888886
2012	49.1875
2013	38.11237704918033
2014	35.055
2015	35.46188524590164
2016	34.970245901639345
2017	33.97901639344263
2018	32.121065573770494
2019	30.770901639344263