Year	hours
2005	359.546875
2006	359.546875
2007	360.359375
2008	321.703125
2009	300.7121212121212
2010	299.2121212121212
2011	301.1515151515151
2012	309.56944444444446
2013	309.5517567567568
2014	307.78148648648653
2015	309.2544594594595
2016	307.5922972972973
2017	304.0504054054054
2018	303.6314864864865
2019	311.36121621621623