Year	days
2003	45.42142857142857
2004	40.93125
2005	38.99411764705882
2006	37.699999999999996
2007	32.81578947368421
2008	24.442105263157895
2009	22.910526315789472
2010	23.042105263157893
2011	23.259999999999998
2012	24.485714285714288
2013	23.10952380952381
2014	22.352380952380955
2015	22.400000000000002
2016	23.41904761904762
2017	21.204761904761906
2018	20.371428571428574
2019	19.51904761904762