Year	days
2003	51.46268656716418
2004	48.39930555555556
2005	50.66257668711656
2006	47.78443113772455
2007	43.25
2008	39.88304093567251
2009	37.6656976744186
2010	35.875
2011	31.813218390804597
2012	31.297752808988765
2013	26.72322751322751
2014	24.242539682539682
2015	23.346578947368425
2016	22.949052631578947
2017	21.441342105263157
2018	20.449476439790573
2019	19.549083769633505