Year	Number
2004-01-01	32.6939
2005-01-01	33.2806
2006-01-01	33.9407
2007-01-01	34.7670
2008-01-01	35.1511
2009-01-01	35.8981
2010-01-01	35.4014
2011-01-01	35.1262
2012-01-01	34.8665
2013-01-01	33.6091
2014-01-01	32.3858
2015-01-01	33.0327
2016-01-01	32.6664