Year	Number
2004-01-01	280
2005-01-01	300
2006-01-01	313
2007-01-01	335
2008-01-01	371
2009-01-01	349
2010-01-01	351
2011-01-01	344
2012-01-01	350
2013-01-01	354
2014-01-01	366
2015-01-01	364