Year	days
2009	94.51428571428572
2010	94.08571428571429
2011	93.35135135135135
2012	88.15789473684211
2013	97.1842105263158
2014	83.02631578947368
2015	80.13157894736842
2016	76.42105263157895
2017	74.97368421052632
2018	74.6842105263158
2019	73.52631578947368
