Year	Number
2004-01-01	473
2005-01-01	486
2006-01-01	518
2007-01-01	522
2008-01-01	573
2009-01-01	584
2010-01-01	622
2011-01-01	701
2012-01-01	750
2013-01-01	779
2014-01-01	810
2015-01-01	880
2016-01-01	875