Year	Number
2004-01-01	33289
2005-01-01	38303
2006-01-01	39414
2007-01-01	46980
2008-01-01	67501
2009-01-01	82741
2010-01-01	97860
2011-01-01	169037
2012-01-01	249132
2013-01-01	258259
2014-01-01	317087
2015-01-01	393227
2016-01-01	369599
2017-01-01	417281