Year	Number
2004-01-01	3
2005-01-01	8
2006-01-01	11
2007-01-01	13
2008-01-01	23
2009-01-01	361
2010-01-01	372
2011-01-01	366
2012-01-01	366
2013-01-01	358
2014-01-01	343
2015-01-01	355
2016-01-01	357
2017-01-01	383