Year	Number
2004-01-01	10855
2005-01-01	121090
2006-01-01	188926
2007-01-01	241747
2008-01-01	417074
2009-01-01	473514
2010-01-01	558050
2011-01-01	684728
2012-01-01	744366
2013-01-01	833893
2014-01-01	800123
2015-01-01	706981
2016-01-01	718920