Year	days
2003	58.24
2004	56.214285714285715
2005	55.661764705882355
2006	53.08695652173913
2007	48.56521739130435
2008	46.44927536231884
2009	43.957142857142856
2010	40.628571428571426
2011	33.871428571428574
2012	33.0625
2013	28.961866666666673
2014	25.663999999999998
2015	25.99078947368421
2016	25.025263157894738
2017	24.16342105263158
2018	23.650263157894738
2019	22.71355263157895