Year	Number
2004-01-01	0.1218
2005-01-01	0.1482
2006-01-01	0.2410
2007-01-01	0.3842
2008-01-01	0.4434
2009-01-01	0.5740
2010-01-01	0.6508
2011-01-01	0.6810
2012-01-01	0.7049
2013-01-01	0.7516
2014-01-01	0.8792
2015-01-01	0.9837
2016-01-01	1.0492