Year	Number
2007-01-01	0.7440
2008-01-01	0.8280
2009-01-01	0.9914
2010-01-01	1.2028
2011-01-01	1.5037
2012-01-01	1.7502
2013-01-01	2.0198
2014-01-01	2.2764
2015-01-01	2.5616