Year	Number
2004-01-01	7797
2005-01-01	7990
2006-01-01	8415
2007-01-01	9458
2008-01-01	10354
2009-01-01	11066
2010-01-01	11648
2011-01-01	11911
2012-01-01	12896
2013-01-01	13094
2014-01-01	13259
2015-01-01	12831
2016-01-01	13117