Year	Number
2004-01-01	9710
2005-01-01	11737
2006-01-01	14103
2007-01-01	16391
2008-01-01	20243
2009-01-01	26284
2010-01-01	46395
2011-01-01	51145
2012-01-01	60899
2013-01-01	140306
2014-01-01	164890
2015-01-01	187304
2016-01-01	203502
2017-01-01	201497