Year	days
2004	85.89473684210526
2005	81.32142857142857
2006	79.21428571428571
2007	63.035714285714285
2008	62.44642857142857
2009	61.285714285714285
2010	59.982142857142854
2011	57.87931034482759
2012	57.241379310344826
2013	53.73870967741936
2014	51.06677419354838
2015	51.51838709677419
2016	57.85564516129032
2017	54.329193548387096
2018	56.619516129032256
2019	56.61322580645161