Year	days
2004	51
2005	51
2006	51
2007	51
2008	51
2009	51
2010	51
2011	51.5
2012	51.5
2013	51.5
2014	51.5
2015	51.5
2016	51.5
2017	51.5
2018	51.5
2019	51.5
