Year	Number
2004-01-01	542228
2005-01-01	640175
2006-01-01	835232
2007-01-01	1117424
2008-01-01	1269604
2009-01-01	1264313
2010-01-01	1075291
2011-01-01	1211095
2012-01-01	1268411
2013-01-01	1246016
2014-01-01	1096491
2015-01-01	1016701
2016-01-01	1015001
2017-01-01	1127327