Year	Number
2004-01-01	36
2005-01-01	89
2006-01-01	99
2007-01-01	106
2008-01-01	119
2009-01-01	132
2010-01-01	180
2011-01-01	191
2012-01-01	209
2013-01-01	231
2014-01-01	241