Year	Number
2004-01-01	24454
2005-01-01	24696
2006-01-01	25712
2007-01-01	25460
2008-01-01	26286
2009-01-01	29439
2010-01-01	30464
2011-01-01	32600
2012-01-01	33464
2013-01-01	34523
2014-01-01	35593
2015-01-01	27884
2016-01-01	25336