Year	Number
2004-01-01	302900
2005-01-01	496493
2006-01-01	566148
2007-01-01	561524
2008-01-01	578117
2009-01-01	423627
2010-01-01	343037
2011-01-01	249283
2012-01-01	249446
2013-01-01	233579
2014-01-01	186633
2015-01-01	162203
2016-01-01	148585
2017-01-01	134281