Year	days
2003	7.5
2004	7.5
2005	6.5
2006	6.5
2007	6.5
2008	6.5
2009	6.5
2010	6
2011	6
2012	6
2013	6
2014	6
2015	3.5
2016	3.5
2017	3.5
2018	3.5
2019	3.5