Year	Number
2004-01-01	89019
2005-01-01	96382
2006-01-01	142545
2007-01-01	170454
2008-01-01	189027
2009-01-01	230642
2010-01-01	274511
2011-01-01	314439
2012-01-01	372906
2013-01-01	399164
2014-01-01	459310
2015-01-01	451526
2016-01-01	460657