Year	Number
2005-01-01	2373
2006-01-01	2557
2007-01-01	2875
2008-01-01	3209
2009-01-01	3478
2010-01-01	3747
2011-01-01	4061
2012-01-01	4372
2013-01-01	4683
2014-01-01	5013
2015-01-01	5292
2016-01-01	5343
2017-01-01	5844