Year	Number
2004-01-01	449
2005-01-01	453
2006-01-01	512
2007-01-01	587
2008-01-01	696
2009-01-01	756
2010-01-01	815
2011-01-01	851
2012-01-01	890
2013-01-01	928
2014-01-01	955
2015-01-01	960
2016-01-01	931