Year	Number
2004-01-01	0.025432350
2005-01-01	3.107113655
2006-01-01	5.165165165
2007-01-01	6.206637915
2008-01-01	5.461342086
2009-01-01	6.386395843
2010-01-01	6.905613548
2011-01-01	3.734935120
2012-01-01	15.289726270
2013-01-01	26.991445110
2014-01-01	18.126753120