Year	days
2004	137.05555555555554
2005	129.73684210526315
2006	98.75
2007	86.95
2008	61.95
2009	49.142857142857146
2010	44
2011	38.476190476190474
2012	31.11904761904762
2013	27.011363636363637
2014	25.363636363636363
2015	23.363636363636363
2016	21.5
2017	21.681818181818183
2018	23.704545454545453
2019	25.5