Year	Number
2004-01-01	0.8673
2005-01-01	1.3144
2006-01-01	2.0275
2007-01-01	2.7590
2008-01-01	4.2527
2009-01-01	6.0309
2010-01-01	6.6335
2011-01-01	6.8314
2012-01-01	8.1428
2013-01-01	9.0935
2014-01-01	10.1753
2015-01-01	10.9387
2016-01-01	11.1525