Year	days
2009	151
2010	133.14545454545456
2011	128.76363636363635
2012	127.87719298245614
2013	133.80275862068967
2014	121.04413793103448
2015	109.76254545454545
2016	108.16945454545454
2017	105.97636363636363
2018	103.67636363636363
2019	101.40836363636363