Year	days
2003	70.08695652173913
2004	66.2
2005	70.9375
2006	68.65625
2007	64.1875
2008	64.46875
2009	61.696969696969695
2010	55.39393939393939
2011	43.484848484848484
2012	42.27777777777778
2013	37.92702702702702
2014	33.44054054054054
2015	33.363157894736844
2016	33.78736842105263
2017	32.234736842105264
2018	31.129473684210527
2019	30.690263157894737