Year	days
2004	69.94117647058823
2005	67.95238095238095
2006	66.79069767441861
2007	65.16279069767442
2008	53.104651162790695
2009	44.81818181818182
2010	40.22222222222222
2011	38.08888888888889
2012	38.32222222222222
2013	34.99979591836735
2014	32.95224489795918
2015	31.942040816326532
2016	31.19622448979592
2017	31.332551020408165
2018	32.47642857142857
2019	32.24795918367347