Year	Number
2004-01-01	2332.3657
2005-01-01	2435.4136
2006-01-01	2537.4640
2007-01-01	2794.2446
2008-01-01	2962.8571
2009-01-01	3211.4286
2010-01-01	3676.6382
2011-01-01	3791.1932
2012-01-01	3854.1076
2013-01-01	3857.1429
2014-01-01	3863.1876
2015-01-01	3963.3286
2016-01-01	3867.4189