Year	Number
2004-01-01	5357
2005-01-01	8738
2006-01-01	17924
2007-01-01	24649
2008-01-01	34835
2009-01-01	46831
2010-01-01	37489
2011-01-01	50838
2012-01-01	62954
2013-01-01	54829
2014-01-01	70724
2015-01-01	91740