Year	days
2003	46.76470588235294
2004	50.94444444444444
2005	50.388888888888886
2006	49.77777777777778
2007	46.77777777777778
2008	46.55555555555556
2009	44.94444444444444
2010	41.94444444444444
2011	37.888888888888886
2012	39.1578947368421
2013	41.01428571428571
2014	35.82333333333333
2015	35.79095238095238
2016	33.05714285714286
2017	32.21142857142858
2018	30.31190476190476
2019	29.62809523809524