Year	Number
2004-01-01	35630
2005-01-01	39587
2006-01-01	53559
2007-01-01	66882
2008-01-01	98106
2009-01-01	103916
2010-01-01	123514
2011-01-01	134432
2012-01-01	149214
2013-01-01	159130
2014-01-01	164244
2015-01-01	178987
2016-01-01	178583
2017-01-01	212077