Year	days
2003	45.82142857142857
2004	41.34375
2005	39.38235294117647
2006	38.088235294117645
2007	33.23684210526316
2008	24.86842105263158
2009	23.342105263157894
2010	23.473684210526315
2011	23.675
2012	24.88095238095238
2013	23.5
2014	22.738095238095237
2015	22.785714285714285
2016	23.80952380952381
2017	21.595238095238095
2018	20.761904761904763
2019	19.88095238095238