Year	Number
2009-01-01	0.5386
2010-01-01	0.7171
2011-01-01	0.7603
2012-01-01	0.9259
2013-01-01	1.0875
2014-01-01	1.0535
2015-01-01	1.0144
2016-01-01	1.1055