Year	Number
2008-01-01	1.5934
2009-01-01	0.6876
2010-01-01	0.6920
2011-01-01	0.6952
2012-01-01	0.6977
2013-01-01	0.6994
2014-01-01	0.6180
2015-01-01	0.5966
2016-01-01	0.5992
2017-01-01	0.5992