Year days 2003 82.64285714285714 2004 75.21428571428571 2005 87.65 2006 83.7 2007 76.475 2008 75.525 2009 72.5 2010 68.35 2011 68 2012 67.25 2013 39.59318181818182 2014 33.36363636363637 2015 32.608636363636364 2016 31.812727272727273 2017 31.44909090909091 2018 26.75272727272727 2019 26.43340909090909