Year	Number
2004-01-01	10.0769
2005-01-01	10.0143
2006-01-01	11.5983
2007-01-01	11.6541
2008-01-01	11.8019
2009-01-01	12.0703
2010-01-01	11.6991
2011-01-01	11.6360
2012-01-01	11.6586
2013-01-01	11.3669
2014-01-01	11.4284
2015-01-01	11.4878
2016-01-01	14.0774