Year	days
2003	45.388888888888886
2004	43.361111111111114
2005	42.86842105263158
2006	35.825
2007	31.2
2008	27.55
2009	22.904761904761905
2010	22
2011	20.30952380952381
2012	19.428571428571427
2013	17.44090909090909
2014	16.613636363636363
2015	14.581818181818182
2016	14.390909090909092
2017	13.754545454545456
2018	14.27727272727273
2019	13.27727272727273