Year	Number
2004-01-01	53102.0
2005-01-01	75654.0
2006-01-01	91322.0
2007-01-01	98354.0
2008-01-01	93904.0
2009-01-01	75506.0
2010-01-01	67644.0
2011-01-01	65810.0
2012-01-01	49097.9
2013-01-01	64940.0
2014-01-01	64544.0
2015-01-01	241717.0
2016-01-01	213514.0