Year	Number
2004-01-01	23045
2005-01-01	24019
2006-01-01	24320
2007-01-01	25164
2008-01-01	28487
2009-01-01	30976
2010-01-01	42110
2011-01-01	50093
2012-01-01	62096
2013-01-01	47659
2014-01-01	50106
2015-01-01	45464
2016-01-01	52999