Year	Number
2004-01-01	125
2005-01-01	128
2006-01-01	132
2007-01-01	132
2008-01-01	132
2009-01-01	130
2010-01-01	130
2011-01-01	131
2012-01-01	130
2013-01-01	130
2014-01-01	129
2015-01-01	129
2016-01-01	130
2017-01-01	130