Year	Number
2007-01-01	129430
2008-01-01	255968
2009-01-01	257945
2010-01-01	251392
2011-01-01	243765
2012-01-01	254728
2013-01-01	244133
2014-01-01	237395
2015-01-01	236048
2016-01-01	247263
2017-01-01	278394