Year	Number
2004-01-01	8.9651
2005-01-01	8.9271
2006-01-01	8.8968
2007-01-01	9.0068
2008-01-01	9.3136
2009-01-01	9.6024
2010-01-01	10.0373
2011-01-01	10.5120
2012-01-01	11.1839
2013-01-01	11.8513
2014-01-01	12.8670
2015-01-01	13.5446
2016-01-01	14.0561