Year	Number
2007-01-01	5.1012
2008-01-01	5.3349
2009-01-01	5.4907
2010-01-01	5.6464
2011-01-01	5.8411
2012-01-01	5.8411
2013-01-01	6.1526
2014-01-01	6.5810
2015-01-01	6.6589
2016-01-01	7.5935