Year	days
2003	58.19
2004	56.151785714285715
2005	55.60294117647059
2006	53.028985507246375
2007	48.507246376811594
2008	46.38405797101449
2009	43.892857142857146
2010	40.56428571428572
2011	33.80714285714286
2012	33
2013	28.901333333333334
2014	25.604
2015	25.931578947368422
2016	24.96578947368421
2017	24.110526315789475
2018	23.597368421052632
2019	22.660526315789475