Year	days
2003	631.7272727272727
2004	623.5454545454545
2005	612.3636363636364
2006	612.3636363636364
2007	598.7272727272727
2008	596.4545454545455
2009	603.5454545454545
2010	603.5454545454545
2011	609
2012	610.4545454545455
2013	624.8181818181819
2014	639.3636363636364
2015	629.3636363636364
2016	629.3636363636364
2017	629.3636363636364
2018	629.3636363636364
2019	629.3636363636364