Year	Number
2008-01-01	1.2005
2009-01-01	0.5129
2010-01-01	0.5129
2011-01-01	0.5127
2012-01-01	0.5130
2013-01-01	0.5130
2014-01-01	0.4520
2015-01-01	0.4346
2016-01-01	0.4346
2017-01-01	0.4346