Year	Number
2004-01-01	417
2005-01-01	607
2006-01-01	749
2007-01-01	869
2008-01-01	1027
2009-01-01	1012
2010-01-01	959
2011-01-01	927
2012-01-01	894
2013-01-01	810
2014-01-01	723
2015-01-01	702