Year	Number
2004-01-01	174
2005-01-01	191
2006-01-01	232
2007-01-01	399
2008-01-01	370
2009-01-01	362
2010-01-01	391
2011-01-01	367
2012-01-01	366
2013-01-01	390
2014-01-01	412
2015-01-01	469
2016-01-01	476