Year	Number
2004-01-01	868
2005-01-01	945
2006-01-01	1011
2007-01-01	1040
2008-01-01	1333
2009-01-01	1464
2010-01-01	1553
2011-01-01	1638
2012-01-01	1729
2013-01-01	1806
2014-01-01	1876
2015-01-01	1940