Year	Number
2004-01-01	12532
2005-01-01	12612
2006-01-01	12883
2007-01-01	12557
2008-01-01	12540
2009-01-01	10182
2010-01-01	9538
2011-01-01	9123
2012-01-01	7876
2013-01-01	7604
2014-01-01	6901
2015-01-01	6387
2016-01-01	6285