Year	Number
2004-01-01	1
2005-01-01	1
2006-01-01	2
2007-01-01	3
2008-01-01	398
2009-01-01	363
2010-01-01	377
2011-01-01	531
2012-01-01	566
2013-01-01	605
2014-01-01	607
2015-01-01	653
2016-01-01	750
2017-01-01	722