Year	Number
2004-01-01	127
2005-01-01	126
2006-01-01	126
2007-01-01	126
2008-01-01	127
2009-01-01	130
2010-01-01	132
2011-01-01	130
2012-01-01	132
2013-01-01	147
2014-01-01	150
2015-01-01	158
2016-01-01	158