Year	Number
2004-01-01	3228
2005-01-01	39519
2006-01-01	87547
2007-01-01	95984
2008-01-01	104536
2009-01-01	67960
2010-01-01	86043
2011-01-01	75753
2012-01-01	63758
2013-01-01	51402
2014-01-01	32800
2015-01-01	118025
2016-01-01	139660