Year	days
2003	55.94117647058823
2004	52.513888888888886
2005	63.67045454545455
2006	58.36666666666667
2007	53.77777777777778
2008	48.888888888888886
2009	45.81521739130435
2010	45.57608695652174
2011	43.70652173913044
2012	43.287234042553195
2013	32.7
2014	29.574509803921572
2015	28.72745098039216
2016	27.521568627450982
2017	23.868627450980394
2018	20.952941176470592
2019	20.28823529411765