Year	Number
2004-01-01	50245
2005-01-01	68441
2006-01-01	82648
2007-01-01	104110
2008-01-01	141158
2009-01-01	139886
2010-01-01	146490
2011-01-01	159046
2012-01-01	175728
2013-01-01	192899
2014-01-01	243200
2015-01-01	268158
2016-01-01	241943
2017-01-01	289906