Year	Number
2004-01-01	1.658305584
2005-01-01	1.959658386
2006-01-01	2.570202723
2007-01-01	6.137880744
2008-01-01	4.119774137
2009-01-01	2.949131863
2010-01-01	1.998838100
2011-01-01	1.220461024
2012-01-01	1.145093015
2013-01-01	1.034655786
2014-01-01	0.813347893