Year	Number
2004-01-01	330
2005-01-01	329
2006-01-01	338
2007-01-01	362
2008-01-01	395
2009-01-01	429
2010-01-01	444
2011-01-01	461
2012-01-01	479
2013-01-01	525
2014-01-01	515
2015-01-01	528
2016-01-01	540