Year	days
2005	217.0611111111111
2006	213.36813186813185
2007	213.64285714285714
2008	210.57692307692307
2009	199.8423913043478
2010	194.1141304347826
2011	185.91758241758242
2012	179.80978260869566
2013	172.34309999999996
2014	168.98821782178214
2015	167.25809999999998
2016	162.7116831683168
2017	160.85851485148518
2018	156.8291089108911
2019	153.0140594059406