Year	days
2004	9.5
2005	9.5
2006	9.5
2007	10.5
2008	10.5
2009	9.5
2010	9.5
2011	9.5
2012	9.5
2013	6.5
2014	8.5
2015	8.5
2016	8.5
2017	8.5
2018	8.5
2019	8.5