Year	days
2003	58.14
2004	56.089285714285715
2005	55.544117647058826
2006	52.971014492753625
2007	48.44927536231884
2008	46.31884057971015
2009	43.82857142857143
2010	40.5
2011	33.74285714285714
2012	32.9375
2013	28.84186666666667
2014	25.544
2015	25.87236842105263
2016	24.90684210526316
2017	24.058157894736844
2018	23.545
2019	22.60828947368421