Year	Number
2004-01-01	99
2005-01-01	95
2006-01-01	84
2007-01-01	81
2008-01-01	82
2009-01-01	76
2010-01-01	67
2011-01-01	69
2012-01-01	69
2013-01-01	67
2014-01-01	65
2015-01-01	63
2016-01-01	63
2017-01-01	60