Year	Number
2004-01-01	0.4731
2005-01-01	0.7846
2006-01-01	1.5301
2007-01-01	2.9191
2008-01-01	4.8575
2009-01-01	11.8931
2010-01-01	12.0222
2011-01-01	16.0069
2012-01-01	26.6632
2013-01-01	33.9273
2014-01-01	44.5888