Year	Number
2007-01-01	3.2493
2008-01-01	5.5157
2009-01-01	7.1863
2010-01-01	8.3731
2011-01-01	8.8670
2012-01-01	7.9998
2013-01-01	6.4652
2014-01-01	9.4357
2015-01-01	3.7114
2016-01-01	3.7859