Year	days
2004	37
2005	63.44444444444444
2006	62.44444444444444
2007	84.3
2008	69.3
2009	69.6
2010	66.4
2011	67.63636363636364
2012	67.54545454545455
2013	59.45454545454545
2014	52.63636363636363
2015	53.90909090909091
2016	73.9090909090909
2017	64.27272727272727
2018	71.81818181818181
2019	72.81818181818181