Year	Number
2004-01-01	576951
2005-01-01	629458
2006-01-01	684856
2007-01-01	794560
2008-01-01	958046
2009-01-01	1009821
2010-01-01	1025212
2011-01-01	966616
2012-01-01	704518
2013-01-01	778835
2014-01-01	828494
2015-01-01	1028340
2016-01-01	1168000