Year	days
2003	66.85909090909091
2004	61.373333333333335
2005	68.84528301886793
2006	65.09056603773585
2007	59.42037037037038
2008	55.60555555555556
2009	52.75185185185186
2010	50.437037037037044
2011	49.21481481481482
2012	49.26071428571429
2013	38.17704918032787
2014	35.122950819672134
2015	35.53114754098361
2016	35.03770491803278
2017	34.04590163934426
2018	32.18852459016394
2019	30.831147540983608