Year	Number
2006-01-01	1.2392
2007-01-01	1.2575
2008-01-01	1.2872
2009-01-01	1.8696
2010-01-01	2.1067
2011-01-01	2.1183
2012-01-01	2.3992
2013-01-01	2.4590
2014-01-01	2.5028
2015-01-01	2.4153
2016-01-01	2.0791
2017-01-01	2.0998