Year	days
2003	60.258620689655174
2004	55.89705882352941
2005	59.13513513513514
2006	56.28947368421053
2007	50.60526315789474
2008	50.03947368421053
2009	47.61842105263158
2010	44.0921052631579
2011	33.828947368421055
2012	32.36842105263158
2013	26.736842105263158
2014	23.44736842105263
2015	24.166666666666668
2016	23.576923076923077
2017	22.987179487179485
2018	23.025641025641026
2019	22.53846153846154