Year	Number
2008-01-01	225003
2009-01-01	197797
2010-01-01	185641
2011-01-01	184344
2012-01-01	183072
2013-01-01	176547
2014-01-01	186913
2015-01-01	193227
2016-01-01	198479
2017-01-01	200744