Year	Number
2004-01-01	471
2005-01-01	544
2006-01-01	576
2007-01-01	658
2008-01-01	664
2009-01-01	664
2010-01-01	679
2011-01-01	791
2012-01-01	804
2013-01-01	801
2014-01-01	806
2015-01-01	818
2016-01-01	810
2017-01-01	781