Year	days
2003	35.95454545454545
2004	32.32608695652174
2005	28.21
2006	27.182692307692307
2007	23.990909090909092
2008	21.678571428571427
2009	20.25
2010	19.178571428571427
2011	16.948275862068964
2012	17.033898305084747
2013	16.23467741935484
2014	14.987903225806452
2015	12.597580645161292
2016	12.521774193548387
2017	11.884677419354839
2018	12.537301587301588
2019	11.396031746031746