Year	Number
2004-01-01	104
2005-01-01	104
2006-01-01	105
2007-01-01	110
2008-01-01	107
2009-01-01	104
2010-01-01	107
2011-01-01	108
2012-01-01	104
2013-01-01	104
2014-01-01	104
2015-01-01	99
2016-01-01	90
2017-01-01	88