Year	days
2003	60.63157894736842
2004	59.80487804878049
2005	57.17391304347826
2006	55.65217391304348
2007	51.32608695652174
2008	49.78260869565217
2009	47.71739130434783
2010	43.82608695652174
2011	38.93478260869565
2012	37.92553191489362
2013	32.868431372549026
2014	28.849019607843136
2015	27.86862745098039
2016	27.095882352941178
2017	26.248725490196076
2018	24.635098039215688
2019	23.70980392156863
