Year	Number
2004-01-01	92
2005-01-01	92
2006-01-01	91
2007-01-01	90
2008-01-01	92
2009-01-01	93
2010-01-01	92
2011-01-01	89
2012-01-01	89
2013-01-01	91
2014-01-01	93
2015-01-01	91
2016-01-01	88
2017-01-01	86