Year	Number
2004-01-01	9.1238
2005-01-01	8.9841
2006-01-01	8.8364
2007-01-01	8.6899
2008-01-01	8.8206
2009-01-01	8.6737
2010-01-01	7.7315
2011-01-01	7.0858
2012-01-01	6.7190
2013-01-01	6.6191
2014-01-01	6.5238
2015-01-01	5.9382
2016-01-01	5.8632