Year	Number
2004-01-01	420
2005-01-01	419
2006-01-01	419
2007-01-01	421
2008-01-01	426
2009-01-01	640
2010-01-01	645
2011-01-01	680
2012-01-01	723
2013-01-01	764
2014-01-01	812
2015-01-01	807
2016-01-01	805