Year	Number
2004-01-01	93
2005-01-01	205
2006-01-01	309
2007-01-01	433
2008-01-01	642
2009-01-01	741
2010-01-01	771
2011-01-01	805
2012-01-01	823
2013-01-01	822
2014-01-01	811
2015-01-01	826
2016-01-01	800