Year	days
2003	57.333333333333336
2004	55.241379310344826
2005	62.36363636363637
2006	59.94117647058823
2007	54.44117647058823
2008	52.411764705882355
2009	50.38235294117647
2010	46.85294117647059
2011	38.35294117647059
2012	36.042857142857144
2013	30.994444444444444
2014	25.938888888888886
2015	26.06216216216216
2016	25.24108108108108
2017	21.254594594594593
2018	21.146486486486484
2019	20.56027027027027