Year	Number
2004-01-01	95742
2005-01-01	133714
2006-01-01	138875
2007-01-01	172859
2008-01-01	220324
2009-01-01	233812
2010-01-01	244379
2011-01-01	260596
2012-01-01	274049
2013-01-01	317854
2014-01-01	461045
2015-01-01	440624
2016-01-01	421093
2017-01-01	637844