Year	Number
2004-01-01	0.0651
2005-01-01	0.0814
2006-01-01	0.0855
2007-01-01	0.1017
2008-01-01	0.1017
2009-01-01	0.1017
2010-01-01	0.1180
2011-01-01	0.1262
2012-01-01	0.1384
2013-01-01	0.2401
2014-01-01	0.2605
2015-01-01	0.2523
2016-01-01	0.5779