Year	Number
2004-01-01	101
2005-01-01	92
2006-01-01	92
2007-01-01	89
2008-01-01	94
2009-01-01	89
2010-01-01	82
2011-01-01	80
2012-01-01	74
2013-01-01	62
2014-01-01	57
2015-01-01	56
2016-01-01	53
2017-01-01	54