Year	Number
2007-01-01	7.7917
2008-01-01	10.2773
2009-01-01	15.5735
2010-01-01	16.4183
2011-01-01	16.7603
2012-01-01	20.6975
2013-01-01	19.4976
2014-01-01	25.0254
2015-01-01	27.1412