Year	days
2003	58.20786516853933
2004	55.170103092783506
2005	59.973214285714285
2006	56.46491228070175
2007	51.81140350877193
2008	48.078947368421055
2009	45.38695652173913
2010	43.2304347826087
2011	38.5
2012	37.610169491525426
2013	31.07857142857143
2014	27.973015873015875
2015	27.440157480314962
2016	26.53543307086614
2017	24.586614173228348
2018	22.84251968503937
2019	22.046456692913385