Year	Number
2005-01-01	0.2867
2006-01-01	0.2901
2007-01-01	0.3398
2008-01-01	0.4719
2009-01-01	0.5159
2010-01-01	0.5656
2011-01-01	0.6028
2012-01-01	0.6638
2013-01-01	0.7632
2014-01-01	0.7857
2015-01-01	0.8196