Year	days
2003	58.43055555555556
2004	56.422077922077925
2005	60.37222222222222
2006	57.01648351648352
2007	52.56043956043956
2008	49.362637362637365
2009	46.78804347826087
2010	44.72282608695652
2011	41.34239130434783
2012	40.62765957446808
2013	32.805294117647065
2014	29.231274509803924
2015	28.31666666666667
2016	27.328137254901964
2017	25.078480392156862
2018	22.808823529411764
2019	22.013970588235296