Year	Number
2004-01-01	7.5641
2005-01-01	7.5001
2006-01-01	8.9266
2007-01-01	9.9869
2008-01-01	10.9879
2009-01-01	11.6000
2010-01-01	13.9606
2011-01-01	13.1075
2012-01-01	13.2910
2013-01-01	10.9123
2014-01-01	9.9541
2015-01-01	8.7570