Year	Number
2004-01-01	27295
2005-01-01	37848
2006-01-01	42248
2007-01-01	38271
2008-01-01	43621
2009-01-01	49593
2010-01-01	49898
2011-01-01	53118
2012-01-01	59203
2013-01-01	65687
2014-01-01	54080