Year	Number
2006-01-01	348531
2007-01-01	374020
2008-01-01	380678
2009-01-01	419050
2010-01-01	425741
2011-01-01	480470
2012-01-01	501875
2013-01-01	433491
2014-01-01	488551
2015-01-01	598935
2016-01-01	640971