Year	days
2003	60.206896551724135
2004	55.8235294117647
2005	59.054054054054056
2006	56.21052631578947
2007	50.526315789473685
2008	49.94736842105263
2009	47.526315789473685
2010	44
2011	33.73684210526316
2012	32.276315789473685
2013	26.644736842105264
2014	23.355263157894736
2015	24.076923076923077
2016	23.487179487179485
2017	22.91025641025641
2018	22.94871794871795
2019	22.46153846153846