Year	days
2003	47.6875
2004	52.588235294117645
2005	52
2006	51.11764705882353
2007	47.94117647058823
2008	47.705882352941174
2009	46
2010	42.8235294117647
2011	38.529411764705884
2012	39.833333333333336
2013	41.714999999999996
2014	36.2645
2015	36.2305
2016	33.36
2017	32.472
2018	30.4775
2019	29.759500000000003