Year	Number
2004-01-01	799
2005-01-01	780
2006-01-01	684
2007-01-01	697
2008-01-01	712
2009-01-01	725
2010-01-01	745
2013-01-01	1320
2014-01-01	1620
2015-01-01	1690
2016-01-01	1723