Year	Persons
2003-01-01	18700
2004-01-01	18400
2005-01-01	18875
2006-01-01	19400
2007-01-01	20150
2008-01-01	20800
2009-01-01	20775
2010-01-01	20700
2011-01-01	21000
2012-01-01	21200
2013-01-01	21250
2014-01-01	20600
2015-01-01	20450
2016-01-01	20450
2017-01-01	20850