Year	days
2004	103.13953488372093
2005	98.80392156862744
2006	97.82352941176471
2007	84.88461538461539
2008	81.41346153846153
2009	75.4423076923077
2010	68.51886792452831
2011	63.45283018867924
2012	64.49074074074075
2013	65.90203389830508
2014	63.21
2015	62.26084745762711
2016	61.86694915254237
2017	61.42983050847457
2018	59.65338983050847
2019	57.73533898305085