Year	days
2009	169.025
2010	144.475
2011	139.25
2012	144.07142857142858
2013	144.05953488372091
2014	137.03627906976743
2015	124.69850000000001
2016	121.48299999999999
2017	118.29249999999999
2018	115.17999999999999
2019	112.2115